$280+ 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 11/27. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BUE
Nov 4 — Nov 111
Round-trip
1 adult, Economy
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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
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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 October 5, 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 October 5, 2026.
This Copa Airlines deal was found by Cheapflights users on 10/5. 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.
Mon 11/163:43 pm -
1 stop14h 17m
Tue 11/2412:05 am -
1 stop16h 09m
Deal found 10/5![Copa Airlines logo]()
$640
This Booking.com deal was found by Cheapflights users on 10/5. 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 11/163:43 pm -
1 stop31h 09m
Tue 12/12:02 am -
1 stop14h 14m
Deal found 10/5![Copa Airlines logo]()
$641
This SmartFares deal was found by Cheapflights users on 10/5. 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.
Sun 11/153:43 pm -
1 stop31h 09m
Thu 11/192:02 am -
1 stop14h 12m
Deal found 10/5![Copa Airlines logo]()
$649
This United Airlines deal was found by Cheapflights users on 10/4. 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 11/166:00 am -
1 stop23h 20m
Thu 11/1910:05 pm -
1 stop20h 20m
Deal found 10/4![United Airlines logo]()
$652
This American Airlines deal was found by Cheapflights users on 10/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/165:12 pm -
2 stops14h 48m
Mon 11/2311:00 pm -
1 stop14h 00m
Deal found 10/2![American Airlines logo]()
$656
This BusinessClass deal was found by Cheapflights users on 10/5. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/306:33 pm -
1 stop12h 32m
Tue 1/2611:35 pm -
2 stops25h 41m
Deal found 10/5![GOL logo]()
$679
This United Airlines deal was found by Cheapflights users on 10/2. 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.
Thu 11/2612:45 pm -
1 stop18h 35m
Fri 12/411:55 pm -
1 stop18h 22m
Deal found 10/2![United Airlines logo]()
$687
This BusinessClass deal was found by Cheapflights users on 10/2. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/184:00 pm -
1 stop14h 40m
Wed 12/29:40 pm -
1 stop15h 17m
Deal found 10/2![GOL logo]()
$704
This Copa Airlines deal was found by Cheapflights users on 10/2. 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.
Mon 11/163:43 pm -
1 stop14h 17m
Sun 11/222:02 am -
1 stop14h 12m
Deal found 10/2![Copa Airlines logo]()
$710
This American Airlines deal was found by Cheapflights users on 9/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/296:33 am -
1 stop24h 27m
Fri 12/1110:30 pm -
1 stop19h 17m
Deal found 9/30![American Airlines logo]()
$718
This Delta deal was found by Cheapflights users on 10/3. 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.
Fri 12/46:20 pm -
1 stop14h 35m
Thu 12/2411:35 pm -
1 stop25h 22m
Deal found 10/3![Delta logo]()
$720
This Delta deal was found by Cheapflights users on 10/4. 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 11/1810:15 am -
1 stop19h 20m
Fri 11/2712:20 pm -
1 stop27h 44m
Deal found 10/4![Delta logo]()
$721
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 October 5, 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 October 5, 2026.
This Copa Airlines deal was found by Cheapflights users on 10/5. 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.
Mon 11/163:43 pm -
1 stop14h 17m
Tue 11/2412:05 am -
1 stop16h 09m
Deal found 10/5![Copa Airlines logo]()
$640
This Delta deal was found by Cheapflights users on 9/30. 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 11/2212:31 pm -
1 stop19h 09m
Tue 12/112:20 pm -
1 stop27h 43m
Deal found 9/30![Delta logo]()
$727
This United Airlines deal was found by Cheapflights users on 10/5. 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.
Thu 10/82:40 pm -
1 stop16h 20m
Tue 10/139:00 pm -
1 stop20h 13m
Deal found 10/5![United Airlines logo]()
$772
This Avianca deal was found by Cheapflights users on 10/3. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/65:50 am -
1 stop21h 50m
Sat 12/127:05 am -
2 stops20h 30m
Deal found 10/3![Avianca logo]()
$804
This Cheapflightsfares deal was found by Cheapflights users on 10/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2811:05 am -
2 stops20h 25m
Tue 11/105:35 pm -
2 stops22h 29m
Deal found 10/2![LATAM Airlines logo]()
$1,089
This Mytrip deal was found by Cheapflights users on 10/5. 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.
Sat 1/169:55 am -
2 stops27h 35m
Wed 1/277:20 pm -
2 stops35h 10m
Deal found 10/5![Multiple Airlines logo]()
$1,159
This KAYAK deal was found by Cheapflights users on 10/4. 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.
Tue 11/31:36 pm -
2 stops25h 44m
Tue 11/106:20 pm -
2 stops19h 46m
Deal found 10/4![GOL logo]()
$1,260
This Copa Airlines deal was found by Cheapflights users on 10/5. 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 3/2611:57 pm -
1 stop23h 31m
Mon 4/510:53 pm -
1 stop26h 48m
Deal found 10/5![Copa Airlines logo]()
$760
This Delta deal was found by Cheapflights users on 10/1. 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.
Sun 12/62:00 pm -
1 stop15h 35m
Mon 12/1411:35 pm -
1 stop19h 51m
Deal found 10/1![Delta logo]()
$760
This Avianca deal was found by Cheapflights users on 10/5. 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.
Mon 11/162:30 pm -
1 stop13h 10m
Wed 12/27:05 am -
2 stops20h 30m
Deal found 10/5![Avianca logo]()
$804
This United Airlines deal was found by Cheapflights users on 10/3. 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.
Sun 1/2412:50 pm -
1 stop18h 30m
Sun 1/3111:55 pm -
1 stop22h 56m
Deal found 10/3![United Airlines logo]()
$811
This Copa Airlines deal was found by Cheapflights users on 10/1. 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.
Wed 3/174:46 pm -
1 stop30h 42m
Sun 4/410:45 am -
1 stop19h 27m
Deal found 10/1![Copa Airlines logo]()
$760
This Delta deal was found by Cheapflights users on 10/1. 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 12/410:29 am -
1 stop21h 11m
Wed 12/1611:35 pm -
1 stop15h 19m
Deal found 10/1![Delta logo]()
$760
This Delta deal was found by Cheapflights users on 10/1. 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 12/412:00 pm -
1 stop19h 40m
Mon 12/1411:35 pm -
1 stop15h 19m
Deal found 10/1![Delta logo]()
$760
This Copa Airlines deal was found by Cheapflights users on 10/1. 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 3/43:46 pm -
1 stop21h 14m
Mon 3/1510:45 am -
1 stop19h 27m
Deal found 10/1![Copa Airlines logo]()
$788
This United Airlines deal was found by Cheapflights users on 10/4. 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 10/128:55 am -
1 stop22h 05m
Mon 10/199:00 pm -
1 stop20h 13m
Deal found 10/4![United Airlines logo]()
$871
This Delta deal was found by Cheapflights users on 9/30. 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.
Sat 12/55:02 pm -
1 stop15h 53m
Sun 12/138:05 pm -
1 stop16h 14m
Deal found 9/30![Delta logo]()
$768
This United Airlines deal was found by Cheapflights users on 10/2. 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.
Thu 11/198:15 am -
1 stop21h 05m
Mon 11/2310:05 pm -
1 stop15h 42m
Deal found 10/2![United Airlines logo]()
$877
This Copa Airlines deal was found by Cheapflights users on 10/4. 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 11/51:16 am -
1 stop20h 51m
Sat 11/143:40 am -
1 stop25h 35m
Deal found 10/4![Copa Airlines logo]()
$849
This Delta deal was found by Cheapflights users on 10/5. 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 11/1612:31 pm -
2 stops25h 29m
Tue 11/245:35 pm -
2 stops26h 50m
Deal found 10/5![Delta logo]()
$772
This Mytrip deal was found by Cheapflights users on 10/5. 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.
Wed 11/115:50 am -
3 stops27h 10m
Sun 11/158:05 pm -
2 stops34h 25m
Deal found 10/5![Multiple Airlines logo]()
$1,178
This United Airlines deal was found by Cheapflights users on 10/3. 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.
Tue 1/196:00 am -
1 stop25h 20m
Thu 1/2811:55 pm -
1 stop24h 50m
Deal found 10/3![United Airlines logo]()
$894
This Delta deal was found by Cheapflights users on 10/1. 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 12/26:30 pm -
1 stop13h 10m
Wed 12/1611:35 pm -
1 stop14h 03m
Deal found 10/1![Delta logo]()
$772
This LATAM Airlines deal was found by Cheapflights users on 10/1. 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.
Tue 12/1510:15 am -
2 stops19h 25m
Sun 1/315:35 pm -
2 stops19h 19m
Deal found 10/1![LATAM Airlines logo]()
$1,248
This Copa Airlines deal was found by Cheapflights users on 10/5. 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.
Sun 11/88:32 am -
1 stop16h 44m
Fri 11/132:45 pm -
1 stop14h 30m
Deal found 10/5![Copa Airlines logo]()
$869
This United Airlines deal was found by Cheapflights users on 10/3. 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.
Sun 1/244:07 pm -
1 stop15h 13m
Tue 1/2611:55 pm -
1 stop18h 23m
Deal found 10/3![United Airlines logo]()
$894
This Mytrip deal was found by Cheapflights users on 10/5. 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.
Tue 11/1011:16 am -
2 stops23h 44m
Sun 11/159:30 pm -
2 stops33h 00m
Deal found 10/5![Multiple Airlines logo]()
$1,229
This Delta deal was found by Cheapflights users on 10/1. 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 12/26:30 pm -
1 stop13h 10m
Tue 12/1511:35 pm -
1 stop14h 03m
Deal found 10/1![Delta logo]()
$772
This LATAM Airlines deal was found by Cheapflights users on 10/1. 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.
Fri 10/2312:26 pm -
2 stops18h 14m
Mon 11/28:05 pm -
2 stops19h 55m
Deal found 10/1![LATAM Airlines logo]()
$1,279
This Cheapflightsfares deal was found by Cheapflights users on 10/4. 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.
Wed 12/22:30 pm -
1 stop13h 10m
Mon 12/217:05 am -
2 stops22h 10m
Deal found 10/4![Avianca logo]()
$1,281
Last-minute flights from Washington, D.C. to Buenos AiresDiscover last-minute flight deals from Washington, D.C. to Buenos Aires. Data last updated October 5, 2026 and is based on user searches.
Discover last-minute flight deals from Washington, D.C. to Buenos Aires. Data last updated October 5, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/83:04 pm -
1 stop15h 56m
Tue 10/139:00 pm -
1 stop20h 27m
Deal found 10/1![United Airlines logo]()
$722
This SmartFares deal was found by Cheapflights users on 10/5. 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.
Sun 11/153:43 pm -
1 stop31h 09m
Thu 11/192:02 am -
1 stop14h 12m
Deal found 10/5![Copa Airlines logo]()
$649
This Copa Airlines deal was found by Cheapflights users on 10/5. 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.
Mon 11/163:43 pm -
1 stop14h 17m
Tue 11/2412:05 am -
1 stop16h 09m
Deal found 10/5![Copa Airlines logo]()
$640
This Booking.com deal was found by Cheapflights users on 10/5. 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 11/163:43 pm -
1 stop31h 09m
Tue 12/12:02 am -
1 stop14h 14m
Deal found 10/5![Copa Airlines logo]()
$641
This United Airlines deal was found by Cheapflights users on 10/4. 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 11/166:00 am -
1 stop23h 20m
Thu 11/1910:05 pm -
1 stop20h 20m
Deal found 10/4![United Airlines logo]()
$652
This American Airlines deal was found by Cheapflights users on 10/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/165:12 pm -
2 stops14h 48m
Mon 11/2311:00 pm -
1 stop14h 00m
Deal found 10/2![American Airlines logo]()
$656
This Copa Airlines deal was found by Cheapflights users on 10/2. 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.
Mon 11/163:43 pm -
1 stop14h 17m
Sun 11/222:02 am -
1 stop14h 12m
Deal found 10/2![Copa Airlines logo]()
$710
This BusinessClass deal was found by Cheapflights users on 10/2. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/184:00 pm -
1 stop14h 40m
Wed 12/29:40 pm -
1 stop15h 17m
Deal found 10/2![GOL logo]()
$704
This Delta deal was found by Cheapflights users on 10/4. 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 11/1810:15 am -
1 stop19h 20m
Fri 11/2712:20 pm -
1 stop27h 44m
Deal found 10/4![Delta logo]()
$721
This United Airlines deal was found by Cheapflights users on 10/2. 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.
Thu 11/2612:45 pm -
1 stop18h 35m
Fri 12/411:55 pm -
1 stop18h 22m
Deal found 10/2![United Airlines logo]()
$687
This American Airlines deal was found by Cheapflights users on 9/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/296:33 am -
1 stop24h 27m
Fri 12/1110:30 pm -
1 stop19h 17m
Deal found 9/30![American Airlines logo]()
$718
This American Airlines deal was found by Cheapflights users on 9/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/296:00 am -
2 stops24h 40m
Fri 12/1110:50 pm -
2 stops21h 54m
Deal found 9/30![American Airlines logo]()
$722
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 October 5, 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 October 5, 2026.
This American Airlines deal was found by Cheapflights users on 10/4. 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 11/2711:46 am -
1 stop19h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![American Airlines logo]()
$280
This American Airlines deal was found by Cheapflights users on 10/5. 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.
Wed 12/23:56 pm -
1 stop16h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![American Airlines logo]()
$291
This oojo deal was found by Cheapflights users on 10/3. 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.
Mon 11/93:43 pm -
1 stop35h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/3![Copa Airlines logo]()
$294
This United Airlines deal was found by Cheapflights users on 10/5. 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.
Thu 12/244:17 pm -
1 stop37h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![United Airlines logo]()
$295
This Copa Airlines deal was found by Cheapflights users on 10/1. 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.
Sun 11/153:43 pm -
1 stop31h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![Copa Airlines logo]()
$312
This Kiwi.com deal was found by Cheapflights users on 10/5. 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.
Mon 11/236:50 am -
3 stops46h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![Multiple Airlines logo]()
$321
This oojo deal was found by Cheapflights users on 10/4. 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.
Fri 12/253:42 pm -
1 stop31h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![Copa Airlines logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 10/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/127:32 am -
3 stops45h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/2![Multiple Airlines logo]()
$323
This FlightHub deal was found by Cheapflights users on 10/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2711:58 am -
2 stops20h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![LATAM Airlines logo]()
$326
This FlightHub deal was found by Cheapflights users on 10/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/111:45 pm -
2 stops18h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/1![LATAM Airlines logo]()
$326
This oojo deal was found by Cheapflights users on 10/3. 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.
Sun 11/83:43 pm -
1 stop31h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/3![Copa Airlines logo]()
$329
This FlightHub deal was found by Cheapflights users on 10/5. 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.
Tue 2/96:10 pm -
2 stops22h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/5![LATAM Airlines logo]()
$334
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 October 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $640 (Copa Airlines) |
One-way from | $280 (American Airlines) |
Popular in | December |
Cheapest in | May |
Average price | $755 |
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 October 5, 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
BaltimoreBuenos Aires
BWI Baltimore/Washington - EZE Buenos Aires Ministro Pistarini
BWIEZE
Baltimore/Washington
Mon 1/18
6:00 am-9:20 am
1 stop25h 20m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$280
BaltimoreBuenos Aires
BWI Baltimore/Washington - EZE Buenos Aires Ministro Pistarini
BWIEZE
Baltimore/Washington
Mon 11/23
6:00 am-9:20 am
1 stop25h 20m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$280
BaltimoreBuenos Aires
BWI Baltimore/Washington - EZE Buenos Aires Ministro Pistarini
BWIEZE
Baltimore/Washington
Sun 11/22
6:00 am-9:20 am
1 stop25h 20m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$280
BaltimoreBuenos Aires
BWI Baltimore/Washington - EZE Buenos Aires Ministro Pistarini
BWIEZE
Baltimore/Washington
Sun 11/15
3:43 pm-12:52 am
1 stop31h 09m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$312
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
11:58 am-10:40 am
2 stops20h 42m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$326
Washington, D.C.Buenos Aires
IAD Washington, D.C. Dulles Intl - EZE Buenos Aires Ministro Pistarini
IADEZE
Washington, D.C. Dulles Intl
Sun 2/7
6:00 am-7:20 am
1 stop23h 20m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$336
Washington, D.C.Buenos Aires
IAD Washington, D.C. Dulles Intl - EZE Buenos Aires Ministro Pistarini
IADEZE
Washington, D.C. Dulles Intl
Tue 11/10
1:16 am-1:11 am
1 stop21h 55m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$337
Washington, D.C.Buenos Aires
IAD Washington, D.C. Dulles Intl - EZE Buenos Aires Ministro Pistarini
IADEZE
Washington, D.C. Dulles Intl
Sun 11/8
1:16 am-1:11 am
1 stop21h 55m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$337
Washington, D.C.Buenos Aires
IAD Washington, D.C. Dulles Intl - EZE Buenos Aires Ministro Pistarini
IADEZE
Washington, D.C. Dulles Intl
Tue 2/23
11:00 am-9:40 am
1 stop20h 40m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$340
Washington, D.C.Buenos Aires
DCA Washington, D.C. Reagan-National - EZE Buenos Aires Ministro Pistarini
DCAEZE
Washington, D.C. Reagan-National
Mon 10/12
5:57 pm-11:05 am
1 stop16h 08m
Buenos Aires Ministro Pistarini
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$340
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 October.
| 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 Accuracy3 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
BWI-EZE
IAD-EZE
DCA-EZE
IAD-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
BWI-EZE
IAD-EZE
DCA-EZE
IAD-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 $679). Flying from Washington, D.C. to Buenos Aires in December is currently the most expensive (average of $1,100). 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 $721 and $818 in November.The cheapest round-trip price found within the last 5 days was $640 on Copa Airlines (Nov 16-Nov 24).
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 October 5, 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
Boarding
8.1
Crew
8.5
Overall
7.8
Comfort
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Food
7.2
Entertainment
7.8
Boarding
8.1
Crew
8.5
Overall
7.8
Comfort
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Food
7.2
Entertainment
7.8
Boarding
8.1
Crew
8.5
Overall
7.8
Comfort
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Food
7.2
Entertainment
7.8
Boarding
8.1
Crew
8.5
Overall
7.8
Comfort
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Food
7.2
Entertainment
7.8
Boarding
8.1
Crew
8.5
Overall
7.8
Comfort
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Food
7.2
Entertainment
7.8
Boarding
8.1
Crew
8.5
Overall
7.8
Comfort
7.8
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
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.
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Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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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 October 5, 2026.
Complete your trip
Complete your trip to Buenos Aires by adding a car rental and/or hotel reservation to your travel itinerary.
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Washington, D.C. and Buenos Aires flights
Browse other Washington, D.C. and Buenos Aires flight options. Last updated on October 5, 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 October 5, 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 October 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$274 | Average$791 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$278 | Average$791 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$328 | Average$734 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$346 | Average$583 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$536 | Average$848 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$599 | Average$814 | FlexibilityNo cancel fee | On-time71% |