$305+ Cheap flights from Washington, D.C. (WAS) to Buenos Aires (BUE)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/22. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BUE
Dec 3 — Dec 101
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Washington, D.C. to Buenos Aires with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Washington, D.C. to Buenos Aires
Cheapest
Best
Last-minute
One-way
Cheapest flights from Washington, D.C. to Buenos AiresExplore the most affordable flight options available from Washington, D.C. to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2026.
Explore the most affordable flight options available from Washington, D.C. to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2026.
This KAYAK deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:00 am -
1 stop23h 20m
Sun 11/2210:05 pm -
1 stop15h 23m
Deal found 11/3![Multiple Airlines logo]()
$651
This FlightHub deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/225:00 pm -
1 stop12h 35m
Tue 12/112:20 pm -
2 stops27h 41m
Deal found 11/3![LATAM Airlines logo]()
$657
This United Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/712:52 pm -
1 stop16h 28m
Tue 12/2211:55 pm -
1 stop24h 18m
Deal found 11/2![United Airlines logo]()
$659
This LATAM Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2412:35 pm -
1 stop20h 20m
Tue 12/19:30 pm -
1 stop13h 46m
Deal found 11/3![Delta logo]()
$675
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/13:00 pm -
2 stops17h 55m
Tue 12/88:05 pm -
2 stops19h 56m
Deal found 11/3![Delta logo]()
$679
This oojo deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:30 pm -
1 stop13h 10m
Tue 12/87:05 am -
1 stop32h 05m
Deal found 11/3![Avianca logo]()
$681
This Avianca deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/75:50 am -
1 stop16h 40m
Sun 11/224:50 pm -
1 stop13h 40m
Deal found 11/1![Avianca logo]()
$692
This Expedia deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/245:00 pm -
1 stop14h 40m
Sat 12/58:05 pm -
1 stop17h 44m
Deal found 11/3![LATAM Airlines logo]()
$696
This Cheapflightsfares deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/224:05 pm -
1 stop13h 30m
Mon 11/3011:35 pm -
1 stop14h 03m
Deal found 11/3![LATAM Airlines logo]()
$696
This Cheapflightsfares deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:35 pm -
2 stops33h 05m
Tue 12/87:05 am -
1 stop23h 25m
Deal found 10/31![Avianca logo]()
$697
This Expedia deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/265:50 am -
1 stop31h 50m
Mon 11/304:50 pm -
2 stops48h 05m
Deal found 11/2![Avianca logo]()
$697
This oojo deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/162:30 pm -
1 stop13h 10m
Wed 12/27:05 am -
2 stops33h 50m
Deal found 11/1![Avianca logo]()
$698
Best flights from Washington, D.C. to Buenos AiresDiscover carefully curated flight deals from Washington, D.C. to Buenos Aires that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 3, 2026.
Discover carefully curated flight deals from Washington, D.C. to Buenos Aires that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 3, 2026.
This Delta deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/310:45 am -
2 stops18h 55m
Wed 3/105:35 pm -
2 stops20h 24m
Deal found 11/1![Delta logo]()
$700
This Copa Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/252:14 am -
1 stop20h 09m
Tue 4/69:04 am -
1 stop21h 08m
Deal found 11/1![Copa Airlines logo]()
$853
This United Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected ” under the list of providers to see comparable flight deals.
Tue 12/84:30 pm -
1 stop14h 50m
Tue 12/2210:05 pm -
2 stops19h 29m
Deal found 11/2![United Airlines logo]()
$885
This LATAM Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/810:14 am -
2 stops20h 16m
Sun 5/238:05 pm -
2 stops18h 51m
Deal found 10/31![LATAM Airlines logo]()
$897
This American Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/13:22 pm -
2 stops15h 43m
Sat 1/1611:10 pm -
2 stops24h 00m
Deal found 11/3![American Airlines logo]()
$1,127
This Delta deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2812:32 pm -
1 stop19h 08m
Tue 12/88:05 pm -
2 stops19h 56m
Deal found 11/1![Delta logo]()
$704
This Delta deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/232:00 pm -
2 stops18h 55m
Tue 12/18:05 pm -
2 stops22h 33m
Deal found 10/29![Delta logo]()
$704
This Expedia deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/31:36 pm -
2 stops21h 24m
Sat 12/123:30 am -
2 stops20h 48m
Deal found 10/30![GOL logo]()
$1,569
This United Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/712:52 pm -
1 stop18h 28m
Tue 12/2210:05 pm -
2 stops19h 29m
Deal found 11/2![United Airlines logo]()
$885
This Delta deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/310:45 am -
2 stops18h 55m
Tue 3/165:35 pm -
2 stops22h 06m
Deal found 10/31![Delta logo]()
$752
This Booking.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/142:30 am -
3 stops25h 50m
Thu 12/244:50 pm -
3 stops24h 23m
Deal found 11/3![Multiple Airlines logo]()
$1,835
This Copa Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/201:16 am -
1 stop25h 09m
Thu 11/264:20 am -
1 stop24h 55m
Deal found 11/2![Copa Airlines logo]()
$921
This Orbitz deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/286:00 am -
2 stops25h 40m
Sat 12/512:55 pm -
2 stops24h 38m
Deal found 10/29![LATAM Airlines logo]()
$1,177
This Delta deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/76:00 am -
2 stops22h 20m
Sun 11/158:05 pm -
1 stop22h 32m
Deal found 10/31![Delta logo]()
$897
This United Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/42:28 pm -
1 stop14h 52m
Sun 1/1711:55 pm -
1 stop23h 01m
Deal found 10/29![United Airlines logo]()
$1,180
This Delta deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/252:00 pm -
1 stop15h 35m
Mon 11/308:05 pm -
2 stops18h 54m
Deal found 11/1![Delta logo]()
$901
This KAYAK deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/239:11 am -
2 stops20h 49m
Thu 12/3110:10 am -
2 stops30h 41m
Deal found 11/3![American Airlines logo]()
$1,445
This Delta deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/226:30 pm -
1 stop13h 10m
Mon 11/308:05 pm -
2 stops18h 54m
Deal found 10/30![Delta logo]()
$901
This LATAM Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/86:30 pm -
2 stops19h 30m
Tue 12/222:55 pm -
2 stops20h 20m
Deal found 11/2![LATAM Airlines logo]()
$1,357
This Delta deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/79:00 am -
2 stops19h 20m
Sun 11/228:05 pm -
2 stops18h 50m
Deal found 10/31![Delta logo]()
$901
This LATAM Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/3110:15 am -
2 stops19h 25m
Mon 1/112:55 pm -
2 stops20h 19m
Deal found 10/29![LATAM Airlines logo]()
$1,400
This Copa Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/254:22 am -
1 stop20h 48m
Fri 1/19:10 am -
1 stop16h 22m
Deal found 10/30![Copa Airlines logo]()
$1,606
This Mytrip deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/188:45 pm -
2 stops30h 55m
Fri 12/257:05 am -
3 stops34h 19m
Deal found 11/2![Multiple Airlines logo]()
$1,914
This oojo deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/186:59 am -
2 stops23h 31m
Sat 11/285:35 pm -
2 stops22h 29m
Deal found 10/31![LATAM Airlines logo]()
$1,497
This Delta deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2611:13 am -
1 stop21h 42m
Sun 11/2912:20 pm -
1 stop27h 44m
Deal found 11/2![Delta logo]()
$1,024
This United Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2312:50 pm -
1 stop16h 30m
Thu 12/3110:05 pm -
1 stop15h 25m
Deal found 11/3![United Airlines logo]()
$1,680
This Delta deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/206:00 am -
2 stops33h 00m
Sat 3/278:05 pm -
2 stops38h 06m
Deal found 10/29![Delta logo]()
$1,065
This Cheapflightsfares deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/214:28 pm -
2 stops22h 32m
Thu 1/1411:45 am -
2 stops25h 40m
Deal found 11/3![LATAM Airlines logo]()
$1,649
This Delta deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/1210:45 am -
2 stops18h 55m
Wed 2/175:35 pm -
2 stops18h 15m
Deal found 11/1![Delta logo]()
$1,082
This LATAM Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/610:15 am -
2 stops19h 25m
Tue 1/53:50 pm -
2 stops19h 24m
Deal found 10/30![LATAM Airlines logo]()
$1,697
Last-minute flights from Washington, D.C. to Buenos AiresDiscover last-minute flight deals from Washington, D.C. to Buenos Aires. Data last updated November 3, 2026 and is based on user searches.
Discover last-minute flight deals from Washington, D.C. to Buenos Aires. Data last updated November 3, 2026 and is based on user searches.
This Avianca deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/75:50 am -
1 stop16h 40m
Sun 11/224:50 pm -
1 stop13h 40m
Deal found 11/1![Avianca logo]()
$692
This KAYAK deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/126:00 am -
1 stop23h 20m
Sun 11/2210:05 pm -
1 stop15h 23m
Deal found 11/3![Multiple Airlines logo]()
$651
This oojo deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/162:30 pm -
1 stop13h 10m
Wed 12/27:05 am -
2 stops33h 50m
Deal found 11/1![Avianca logo]()
$698
This FlightHub deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/225:00 pm -
1 stop12h 35m
Tue 12/112:20 pm -
2 stops27h 41m
Deal found 11/3![LATAM Airlines logo]()
$657
This Cheapflightsfares deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/224:05 pm -
1 stop13h 30m
Mon 11/3011:35 pm -
1 stop14h 03m
Deal found 11/3![LATAM Airlines logo]()
$696
This LATAM Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2412:35 pm -
1 stop20h 20m
Tue 12/19:30 pm -
1 stop13h 46m
Deal found 11/3![Delta logo]()
$675
This Expedia deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/245:00 pm -
1 stop14h 40m
Sat 12/58:05 pm -
1 stop17h 44m
Deal found 11/3![LATAM Airlines logo]()
$696
This Expedia deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/265:50 am -
1 stop31h 50m
Mon 11/304:50 pm -
2 stops48h 05m
Deal found 11/2![Avianca logo]()
$697
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/13:00 pm -
2 stops17h 55m
Tue 12/88:05 pm -
2 stops19h 56m
Deal found 11/3![Delta logo]()
$679
This Cheapflightsfares deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:35 pm -
2 stops33h 05m
Tue 12/87:05 am -
1 stop23h 25m
Deal found 10/31![Avianca logo]()
$697
This oojo deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:30 pm -
1 stop13h 10m
Tue 12/87:05 am -
1 stop32h 05m
Deal found 11/3![Avianca logo]()
$681
This United Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/712:52 pm -
1 stop16h 28m
Tue 12/2211:55 pm -
1 stop24h 18m
Deal found 11/2![United Airlines logo]()
$659
One-way flights from Washington, D.C. to Buenos AiresSearch for one-way flight options from Washington, D.C. to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated November 3, 2026.
Search for one-way flight options from Washington, D.C. to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated November 3, 2026.
This LATAM Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/210:11 am -
2 stops20h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![LATAM Airlines logo]()
$305
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/212:38 pm -
2 stops20h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Delta logo]()
$305
This LATAM Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/156:00 am -
2 stops23h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![LATAM Airlines logo]()
$305
This Delta deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/172:00 pm -
2 stops18h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/30![Delta logo]()
$305
This LATAM Airlines deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/1710:14 am -
2 stops20h 16m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![LATAM Airlines logo]()
$306
This Kiwi.com deal was found by Cheapflights users on 10/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/309:49 pm -
3 stops31h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![Multiple Airlines logo]()
$307
This SmartFares deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/162:00 pm -
1 stop17h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![LATAM Airlines logo]()
$310
This American Airlines deal was found by Cheapflights users on 11/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/317:00 am -
2 stops22h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![American Airlines logo]()
$311
This LATAM Airlines deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2810:15 am -
2 stops21h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![LATAM Airlines logo]()
$311
This SmartFares deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/111:07 am -
1 stop21h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![LATAM Airlines logo]()
$314
This Kiwi.com deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/112:35 pm -
2 stops19h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/30![LATAM Airlines logo]()
$315
This FlightHub deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/217:50 pm -
2 stops19h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![LATAM Airlines logo]()
$317
Find flight deals from Washington, D.C. to Buenos Aires
Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Buenos Aires (BUE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $648 (FlightHub) |
One-way from | $305 (LATAM Airlines) |
Popular in | December |
Cheapest in | May |
Average price | $796 |
Cheapflights Fare Finder
Customize your flight search to find flights from Washington, D.C. to Buenos Aires that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated November 3, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Buenos Aires that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Washington, D.C.Buenos Aires
IAD Washington, D.C. Dulles Intl - AEP Buenos Aires Jorge Newbery
IADAEP
Washington, D.C. Dulles Intl
Mon 2/22
11:00 am-4:00 pm
2 stops27h 00m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$305
Washington, D.C.Buenos Aires
IAD Washington, D.C. Dulles Intl - EZE Buenos Aires Ministro Pistarini
IADEZE
Washington, D.C. Dulles Intl
Fri 11/27
12:50 pm-9:20 am
1 stop18h 30m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$305
Washington, D.C.Buenos Aires
IAD Washington, D.C. Dulles Intl - EZE Buenos Aires Ministro Pistarini
IADEZE
Washington, D.C. Dulles Intl
Wed 12/2
12:38 pm-10:55 am
2 stops20h 17m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$305
Washington, D.C.Buenos Aires
IAD Washington, D.C. Dulles Intl - EZE Buenos Aires Ministro Pistarini
IADEZE
Washington, D.C. Dulles Intl
Wed 3/3
2:36 pm-9:20 am
1 stop16h 44m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$305
Quickest round-trip
Washington, D.C.Buenos Aires
IAD Washington, D.C. Dulles Intl - EZE Buenos Aires Ministro Pistarini
IADEZE
Washington, D.C. Dulles Intl
Tue 12/29
4:30 pm-10:55 am
1 stop16h 25m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$305
Washington, D.C.Buenos Aires
IAD Washington, D.C. Dulles Intl - EZE Buenos Aires Ministro Pistarini
IADEZE
Washington, D.C. Dulles Intl
Tue 12/8
12:55 pm-7:20 am
1 stop16h 25m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$305
Washington, D.C.Buenos Aires
IAD Washington, D.C. Dulles Intl - EZE Buenos Aires Ministro Pistarini
IADEZE
Washington, D.C. Dulles Intl
Tue 11/17
12:32 pm-9:50 am
2 stops19h 18m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$305
Washington, D.C.Buenos Aires
IAD Washington, D.C. Dulles Intl - EZE Buenos Aires Ministro Pistarini
IADEZE
Washington, D.C. Dulles Intl
Mon 1/11
6:00 am-7:20 am
1 stop23h 20m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$305
Washington, D.C.Buenos Aires
DCA Washington, D.C. Reagan-National - EZE Buenos Aires Ministro Pistarini
DCAEZE
Washington, D.C. Reagan-National
Mon 1/11
2:45 pm-10:55 am
2 stops18h 10m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$305
Washington, D.C.Buenos Aires
IAD Washington, D.C. Dulles Intl - EZE Buenos Aires Ministro Pistarini
IADEZE
Washington, D.C. Dulles Intl
Wed 12/2
8:30 am-9:20 am
1 stop22h 50m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$305
Showing 1-10 of 60 resultsSorted by cheapest first
Compare providers for flights from Washington, D.C. to Buenos Aires
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Washington, D.C. to Buenos Aires in November.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Washington, D.C.-Buenos Aires flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-Buenos Aires flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Buenos Aires flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Washington, D.C.-Buenos Aires flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C.-Buenos Aires flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Washington, D.C. to Buenos Aires
Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Washington, D.C. with our price prediction graph.
WAS-BUE
IAD-EZE
DCA-EZE
IAD-AEP
DCA-AEP
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Washington, D.C. to Buenos Aires
WAS-BUE
IAD-EZE
DCA-EZE
IAD-AEP
DCA-AEP
What is the cheapest month to book a flight from Washington, D.C. to Buenos Aires?
Currently, May is the cheapest month in which you can book a flight from Washington, D.C. to Buenos Aires (average of $692). Flying from Washington, D.C. to Buenos Aires in December is currently the most expensive (average of $1,165). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Washington, D.C. to Buenos Aires?
Airfare is below average for this route at the moment.
Washington, D.C. to Buenos Aires flights typically cost between $707 and $929 in April.The cheapest round-trip price found within the last 5 days was $648 on Avianca (Apr 5-Apr 19).
What’s the top layover airport for flights from Washington, D.C. to Buenos Aires?
Share of 1-stop round-trip flights from Washington, D.C. to Buenos Aires chosen by Cheapflights users in the past 12 months, using the same layover each way.
Panama City (PTY) – chosen by Cheapflights users on 67% of 1-stop itineraries from Washington, D.C. to Buenos Aires on Cheapflights.
What’s the cheapest layover airport for flights from Washington, D.C. to Buenos Aires?
Average round-trip fare for 1-stop flights from Washington, D.C. to Buenos Aires, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Panama City (PTY) is the most affordable 1-stop option, with an average round-trip price of $608.
What’s the fastest layover option from Washington, D.C. to Buenos Aires?
Shortest average travel time for 1-stop one-way flights from Washington, D.C. to Buenos Aires, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Atlanta (ATL) have the shortest average one-way travel time for 1-stop routes: 13h 07m.
Which airport typically offers the quickest layover for flights from Washington, D.C. to Buenos Aires?
Average layover duration for 1-stop one-way flights from Washington, D.C. to Buenos Aires, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Atlanta (ATL) offer the fastest connection on this route, with an average layover time of 1h 40m.
How far ahead should I book a flight from Washington, D.C. to Buenos Aires?
The best time to book flights from Washington, D.C. to Buenos Aires is 5 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Reviews of airlines servicing Buenos Aires
Get insights into the airlines that provide service to Buenos Aires. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Buenos Aires. Reviews last updated November 3, 2026.
Peruse reviews from past customers who have flown with Delta,Copa Airlines, andLATAM Airlines from Washington, D.C. to Buenos Aires to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.2
Entertainment
7.8
Comfort
7.8
Boarding
8.1
Crew
8.5
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Food
7.2
Entertainment
7.8
Comfort
7.8
Boarding
8.1
Crew
8.5
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Food
7.2
Entertainment
7.8
Comfort
7.8
Boarding
8.1
Crew
8.5
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Food
7.2
Entertainment
7.8
Comfort
7.8
Boarding
8.1
Crew
8.5
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Food
7.2
Entertainment
7.8
Comfort
7.8
Boarding
8.1
Crew
8.5
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Food
7.2
Entertainment
7.8
Comfort
7.8
Boarding
8.1
Crew
8.5
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Related info for your journey
Find useful and relevant information for your journey from Washington, D.C. to Buenos Aires. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Buenos Aires flight routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Washington, D.C.
Popular flights
Alternative routes for Washington, D.C. to Buenos Aires
See prices for flight routes from nearby airports that may be better suited for you.
Other flights to Buenos Aires
Explore flights to Buenos Aires departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on November 3, 2026.
Complete your trip
Complete your trip to Buenos Aires by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Washington, D.C. to Buenos Aires by cabin class
Find flights from Washington, D.C. to Buenos Aires, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Washington, D.C. and Buenos Aires flights
Browse other Washington, D.C. and Buenos Aires flight options. Last updated on November 3, 2026.
Other flights from Washington, D.C.
Browse through other flights departing from Washington, D.C.. Flights are based on user searches made on Cheapflights and were last updated on November 3, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 6 airlines flying from Washington, D.C. to Buenos Aires
Discover the top 6 airlines that operate flights from Washington, D.C. to Buenos Aires. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated November 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$305 | Average$826 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$328 | Average$626 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$335 | Average$743 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$346 | Average$577 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$536 | Average$848 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$599 | Average$814 | FlexibilityNo cancel fee | On-time71% |