$305+ Cheap flights from Dulles Intl (IAD) 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 12/30. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BUE
Dec 4 — Dec 111
Round-trip
1 adult, Economy
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Cheapest flights from Dulles Intl to Buenos AiresExplore the most affordable flight options available from Dulles Intl to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 4, 2026.
Explore the most affordable flight options available from Dulles Intl to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 4, 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 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 12/25:50 am -
1 stop21h 50m
Wed 12/97:05 am -
1 stop32h 05m
Deal found 11/3![Avianca logo]()
$664
This FlightHub deal was found by Cheapflights users on 11/4. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/84:25 pm -
2 stops35h 15m
Fri 11/137:05 am -
2 stops33h 50m
Deal found 11/4![Avianca logo]()
$673
This FlightHub deal was found by Cheapflights users on 11/4. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/84:25 pm -
2 stops30h 05m
Fri 11/137:25 am -
2 stops33h 30m
Deal found 11/4![Avianca logo]()
$673
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.
Sun 12/68:07 am -
2 stops22h 23m
Tue 12/810:35 am -
2 stops27h 14m
Deal found 11/3![LATAM Airlines logo]()
$675
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 11/3. 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.
Sat 12/54:35 am -
2 stops23h 05m
Tue 12/87:05 am -
1 stop32h 05m
Deal found 11/3![Avianca logo]()
$687
This Cheapflightsfares deal was found by Cheapflights users on 11/4. 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.
Tue 12/15:50 am -
1 stop21h 50m
Tue 12/87:05 am -
1 stop23h 25m
Deal found 11/4![Avianca logo]()
$692
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
Best flights from Dulles Intl to Buenos AiresDiscover carefully curated flight deals from Dulles Intl to Buenos Aires that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 4, 2026.
Discover carefully curated flight deals from Dulles Intl to Buenos Aires that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 4, 2026.
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.
Sun 1/316:15 pm -
1 stop14h 40m
Mon 2/1511:35 pm -
1 stop18h 01m
Deal found 11/3![Delta logo]()
$675
This Copa 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/28:25 am -
1 stop15h 45m
Mon 12/215:05 am -
1 stop20h 27m
Deal found 10/31![Copa Airlines logo]()
$728
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/86:00 am -
1 stop23h 20m
Sun 5/239:00 pm -
1 stop26h 36m
Deal found 10/31![United Airlines logo]()
$794
This Avianca 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/32:30 pm -
1 stop13h 10m
Wed 3/107:05 am -
2 stops20h 30m
Deal found 10/30![Avianca logo]()
$858
This LATAM Airlines deal was found by Cheapflights users on 11/4. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/127:50 pm -
2 stops19h 10m
Mon 4/195:35 pm -
2 stops24h 55m
Deal found 11/4![LATAM Airlines logo]()
$866
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 11/4. 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.
Mon 3/224:46 pm -
1 stop30h 52m
Sat 4/310:53 pm -
1 stop23h 51m
Deal found 11/4![Copa Airlines logo]()
$763
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 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.
Sat 11/148:32 am -
1 stop16h 38m
Sat 11/2812:05 am -
1 stop29h 10m
Deal found 11/1![Copa Airlines logo]()
$769
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 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 Ovago deal was found by Cheapflights users on 11/4. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/211:00 pm -
1 stop19h 40m
Sat 3/2711:35 pm -
1 stop19h 51m
Deal found 11/4![LATAM Airlines logo]()
$1,179
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 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.
Mon 3/157:50 pm -
2 stops19h 10m
Sun 3/215:35 pm -
2 stops22h 06m
Deal found 11/3![Delta logo]()
$949
This Copa 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/218:32 am -
1 stop16h 38m
Sat 11/289:10 am -
1 stop16h 23m
Deal found 11/3![Copa Airlines logo]()
$940
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.
Sun 3/147:50 pm -
2 stops19h 10m
Mon 3/225:35 pm -
2 stops19h 24m
Deal found 11/3![Delta logo]()
$949
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.
Sun 3/147:50 pm -
2 stops19h 10m
Sun 3/215:35 pm -
2 stops22h 06m
Deal found 11/3![Delta logo]()
$949
This Copa 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/34:18 am -
1 stop19h 52m
Sat 1/164:25 am -
1 stop24h 48m
Deal found 10/31![Copa Airlines logo]()
$1,053
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.
Wed 2/1711:00 am -
2 stops18h 40m
Wed 3/35:35 pm -
2 stops20h 24m
Deal found 10/30![Delta logo]()
$1,030
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 3/206:00 am -
2 stops33h 00m
Sun 3/288:40 am -
2 stops34h 46m
Deal found 10/31![Delta logo]()
$1,065
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 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.
Tue 2/210:56 am -
2 stops18h 44m
Mon 2/155:35 pm -
2 stops20h 18m
Deal found 11/1![Delta logo]()
$1,108
This LATAM Airlines deal was found by Cheapflights users on 11/4. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/206:30 pm -
1 stop15h 25m
Sat 3/2711:35 pm -
1 stop16h 06m
Deal found 11/4![Delta logo]()
$1,123
Last-minute flights from Dulles Intl to Buenos AiresDiscover last-minute flight deals from Dulles Intl to Buenos Aires. Data last updated November 4, 2026 and is based on user searches.
Discover last-minute flight deals from Dulles Intl to Buenos Aires. Data last updated November 4, 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 FlightHub deal was found by Cheapflights users on 11/4. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/84:25 pm -
2 stops35h 15m
Fri 11/137:05 am -
2 stops33h 50m
Deal found 11/4![Avianca logo]()
$673
This FlightHub deal was found by Cheapflights users on 11/4. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/84:25 pm -
2 stops30h 05m
Fri 11/137:25 am -
2 stops33h 30m
Deal found 11/4![Avianca logo]()
$673
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 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 Cheapflightsfares deal was found by Cheapflights users on 11/4. 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.
Tue 12/15:50 am -
1 stop21h 50m
Tue 12/87:05 am -
1 stop23h 25m
Deal found 11/4![Avianca logo]()
$692
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 12/25:50 am -
1 stop21h 50m
Wed 12/97:05 am -
1 stop32h 05m
Deal found 11/3![Avianca logo]()
$664
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 11/3. 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.
Sat 12/54:35 am -
2 stops23h 05m
Tue 12/87:05 am -
1 stop32h 05m
Deal found 11/3![Avianca logo]()
$687
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.
Sun 12/68:07 am -
2 stops22h 23m
Tue 12/810:35 am -
2 stops27h 14m
Deal found 11/3![LATAM Airlines logo]()
$675
One-way flights from Dulles Intl to Buenos AiresSearch for one-way flight options from Dulles Intl to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated November 4, 2026.
Search for one-way flight options from Dulles Intl to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated November 4, 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 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 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 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.
Mon 2/227:15 am -
1 stop24h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Delta logo]()
$316
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
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/164:00 pm -
2 stops16h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![LATAM Airlines logo]()
$317
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.
Wed 12/212:38 pm -
2 stops20h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![LATAM Airlines logo]()
$318
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2410:54 pm -
1 stop30h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![United Airlines logo]()
$320
This SmartFares 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/76:30 pm -
2 stops22h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![LATAM Airlines logo]()
$321
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.
Thu 12/106:00 am -
2 stops23h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![American Airlines logo]()
$322
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 -
2 stops31h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![Multiple Airlines logo]()
$324
Find flight deals from Dulles Intl to Buenos Aires
Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) 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 4, 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 | February |
Average price | $709 |
Cheapflights Fare Finder
Customize your flight search to find flights from Dulles Intl 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 4, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport 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 - EZE Buenos Aires Ministro Pistarini
IADEZE
Washington, D.C. Dulles Intl
Wed 12/30
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 11/18
12:32 pm-9:40 am
1 stop19h 08m
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
Sun 1/3
6:00 am-9:20 am
1 stop25h 20m
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-9:40 am
1 stop19h 08m
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
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
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
Tue 1/19
8:25 am-9:20 am
1 stop22h 55m
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 - AEP Buenos Aires Jorge Newbery
IADAEP
Washington, D.C. Dulles Intl
Wed 12/30
9:49 pm-7:30 am
2 stops31h 41m
Buenos Aires Jorge Newbery
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$324
Showing 1-10 of 44 resultsSorted by cheapest first
Compare providers for flights from Dulles Intl 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 Dulles Intl 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 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. Dulles Intl Airport-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. Dulles Intl Airport-Buenos Aires flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Buenos Aires flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-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. Dulles Intl Airport-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 Dulles Intl to Buenos Aires
Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Dulles Intl with our price prediction graph.
IAD-BUE
IAD-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. Dulles Intl Airport to Buenos Aires
IAD-BUE
IAD-EZE
IAD-AEP
What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Buenos Aires?
Currently, April is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Buenos Aires (average of $713). Flying from Washington, D.C. Dulles Intl Airport to Buenos Aires in December is currently the most expensive (average of $1,105). 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. Dulles Intl Airport to Buenos Aires?
Airfare is below average for this route at the moment.
Washington, D.C. Dulles Intl Airport to Buenos Aires flights typically cost between $702 and $1,075 in April.The cheapest round-trip price found within the last 5 days was $648 on Avianca (Apr 5-Apr 19).
How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Buenos Aires?
Booking 5 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. Dulles Intl Airport to Buenos Aires. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
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 4, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Buenos Aires, such as Delta,Copa Airlines, andLATAM Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.8
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Entertainment
7.8
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Entertainment
7.8
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Entertainment
7.8
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Entertainment
7.8
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Entertainment
7.8
Boarding
8.1
Overall
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Related info for your journey
Find useful and relevant information for your journey from Dulles Intl 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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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 4, 2026.
Complete your trip
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Find flights from Dulles Intl to Buenos Aires, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Dulles Intl and Buenos Aires flights
Browse other Dulles Intl and Buenos Aires flight options. Last updated on November 4, 2026.
Other flights from Dulles Intl
Browse through other flights departing from Dulles Intl. Flights are based on user searches made on Cheapflights and were last updated on November 4, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 5 airlines flying from Dulles Intl to Buenos Aires
Discover the top 5 airlines that operate flights from Dulles Intl 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 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$305 | Average$889 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$335 | Average$741 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$346 | Average$757 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$486 | Average$866 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$536 | Average$848 | FlexibilityNo cancel fee | On-time71% |