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Dulles Intl

$354+ Cheap flights from Buenos Aires (BUE) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/29. Fares are subject to change and may not be available on all flights or dates of travel.
BUE — IAD
Jul 12 — Jul 191
Sun 7/12
Sun 7/19
1 adult, Economy
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Cheap flight deals from Buenos Aires to Dulles Intl

Cheapest flights from Buenos Aires to Dulles Intl
Explore the most affordable flight options available from Buenos Aires to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2026.

This Avianca deal was found by Cheapflights users on 6/10. 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.
Fri 10/167:10 am
EZE
-
IAD
2 stops20h 35m
Avianca
Thu 10/224:10 am
IAD
-
EZE
2 stops19h 15m
Avianca
Deal found 6/10$648
This Copa Airlines deal was found by Cheapflights users on 6/12. 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.
Tue 7/143:48 am
EZE
-
IAD
1 stop25h 33m
Copa Airlines
Sun 8/166:26 am
IAD
-
EZE
1 stop17h 25m
Copa Airlines
Deal found 6/12$656
This United Airlines deal was found by Cheapflights users on 6/10. 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 6/179:00 pm
EZE
-
IAD
1 stop24h 46m
United Airlines
Sun 7/1210:20 pm
IAD
-
EZE
1 stop32h 40m
United Airlines
Deal found 6/10$661
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Tue 9/110:30 pm
EZE
-
IAD
2 stops25h 25m
American Airlines
Thu 4/19:18 am
IAD
-
EZE
2 stops21h 42m
American Airlines
Deal found 6/10$666
This Copa Airlines deal was found by Cheapflights users on 6/7. 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 6/183:48 am
EZE
-
IAD
1 stop21h 45m
Copa Airlines
Fri 7/36:25 am
IAD
-
EZE
1 stop17h 27m
Copa Airlines
Deal found 6/7$673
This oojo deal was found by Cheapflights users on 6/11. 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 10/57:10 am
EZE
-
IAD
1 stop32h 05m
Avianca
Mon 10/125:45 am
IAD
-
EZE
2 stops22h 55m
Avianca
Deal found 6/11$676
This Copa Airlines deal was found by Cheapflights users on 6/11. 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 8/293:48 am
EZE
-
IAD
1 stop21h 45m
Copa Airlines
Fri 10/29:35 am
IAD
-
EZE
1 stop18h 01m
Copa Airlines
Deal found 6/11$681
This Avianca deal was found by Cheapflights users on 6/9. 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.
Tue 6/164:50 pm
EZE
-
IAD
1 stop13h 30m
Avianca
Tue 7/143:35 pm
IAD
-
EZE
1 stop13h 05m
Avianca
Deal found 6/9$683
This Avianca deal was found by Cheapflights users on 6/11. 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.
Fri 6/124:50 pm
EZE
-
IAD
1 stop13h 30m
Avianca
Sat 6/275:35 pm
IAD
-
EZE
2 stops21h 05m
Avianca
Deal found 6/11$684
This oojo deal was found by Cheapflights users on 6/11. 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 10/57:00 am
AEP
-
IAD
1 stop32h 15m
Avianca
Mon 10/124:10 am
IAD
-
AEP
2 stops24h 30m
Avianca
Deal found 6/11$697
This oojo deal was found by Cheapflights users on 6/10. 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.
Thu 6/187:00 am
AEP
-
IAD
1 stop23h 20m
Avianca
Wed 7/16:50 am
IAD
-
AEP
1 stop21h 50m
Avianca
Deal found 6/10$736
This Avianca deal was found by Cheapflights users on 6/9. 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 9/27:00 am
AEP
-
IAD
2 stops20h 45m
Avianca
Wed 9/96:50 am
IAD
-
AEP
1 stop21h 50m
Avianca
Deal found 6/9$749

Find flight deals from Buenos Aires to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Buenos Aires (BUE) to Dulles Intl (IAD). 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 June 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$648
(Avianca)

One-way from

$354
(SmartFares)

Popular in

April

Cheapest in

November

Average price

$789
Provider with most accurate pricing for Buenos Aires (BUE)-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Buenos Aires (BUE)-Washington, D.C. Dulles Intl flights.
Search Deals
From Buenos Aires (BUE) to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Buenos Aires (BUE) to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($38 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Buenos Aires to Dulles Intl 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 2,558,603 searches. Data last updated June 12, 2026.
Use the filters below to find and compare flights from Buenos Aires to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Mon 9/7

2:17 am-3:04 pm

1 stop13h 47m

Washington, D.C. Dulles Intl

Mon 9/21

2:25 am-10:26 pm

1 stop19h 01m

$656

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Thu 8/6

9:00 pm-10:43 pm

1 stop26h 43m

Washington, D.C. Dulles Intl

Sun 8/16

10:29 pm-8:00 am

1 stop32h 31m

$661

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Thu 8/6

9:00 pm-10:43 pm

1 stop26h 43m

Washington, D.C. Dulles Intl

Mon 8/24

12:57 pm-8:00 am

1 stop18h 03m

$661
Quickest round-trip

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Wed 11/18

10:05 pm-11:37 am

1 stop15h 32m

Washington, D.C. Dulles Intl

Wed 12/2

5:15 pm-9:20 am

1 stop14h 05m

$697

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Fri 6/26

8:10 pm-10:22 am

1 stop15h 12m

Washington, D.C. Dulles Intl

Sun 7/12

3:15 pm-9:45 am

1 stop17h 30m

$705

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Sun 6/28

9:00 pm-11:28 am

1 stop15h 28m

Washington, D.C. Dulles Intl

Tue 9/29

3:02 pm-8:00 am

1 stop15h 58m

$705

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Mon 6/29

9:00 pm-12:31 am

1 stop28h 31m

Washington, D.C. Dulles Intl

Sat 9/26

10:18 pm-8:00 am

1 stop32h 42m

$723

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Tue 7/21

2:49 pm-1:47 am

1 stop35h 58m

Washington, D.C. Dulles Intl

Sun 8/2

2:25 am-4:36 am

1 stop25h 11m

$725

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Thu 8/6

8:10 pm-9:20 am

1 stop14h 10m

Washington, D.C. Dulles Intl

Mon 8/24

3:03 pm-9:40 am

2 stops17h 37m

$728

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Thu 7/30

8:10 pm-11:37 am

1 stop16h 27m

Washington, D.C. Dulles Intl

Mon 8/17

3:03 pm-9:45 am

1 stop17h 42m

$728

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 40 resultsSorted by cheapest first
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  • Most accurate provider: When it comes to deals on Buenos Aires-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Buenos Aires-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Buenos Aires-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Buenos Aires-Washington, D.C. Dulles Intl Airport 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 Buenos Aires-Washington, D.C. Dulles Intl Airport 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 Buenos Aires to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Buenos Aires with our price prediction graph.
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 Buenos Aires to Washington, D.C. Dulles Intl Airport

What is the cheapest month to book a flight from Buenos Aires to Washington, D.C. Dulles Intl Airport?

Currently, December is the cheapest month in which you can book a flight from Buenos Aires to Washington, D.C. Dulles Intl Airport (average of $232). Flying from Buenos Aires to Washington, D.C. Dulles Intl Airport in February is currently the most expensive (average of $777). 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 Buenos Aires to Washington, D.C. Dulles Intl Airport?

Related info for your journey

Find useful and relevant information for your journey from Buenos Aires to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Buenos Aires to Washington, D.C. Dulles Intl Airport?

    Copa Airlines, United Airlines, and Avianca can get you from Buenos Aires to Washington, D.C. Dulles Intl Airport in just under 13h 47m. Your travel time can differ by up to 18h 28m. There are 5235 mi between Buenos Aires and Washington, D.C. Dulles Intl Airport. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Buenos Aires to Washington, D.C. Dulles Intl Airport round-trip?

    Cheapflights users have booked flights from Buenos Aires to Washington, D.C. Dulles Intl Airport round-trip from $232. Other airlines that can offer you cheap pricing are Delta, from $344, and Copa Airlines, from $378. You may be able to fly from Buenos Aires to Washington, D.C. Dulles Intl Airport for 71% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Buenos Aires to Washington, D.C. Dulles Intl Airport one-way?

    $356 is the cheapest one-way deal found within the past few days, from Copa Airlines. You may also be able to find cheap deals on Avianca and Delta, with prices starting from $375 and $455, respectively.

  • Can I find deals for flights from Buenos Aires to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Buenos Aires to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Buenos Aires to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Buenos Aires to Dulles Intl.

  • Can I find deals for business class flights from Buenos Aires to Dulles Intl?

    Yes. Cheapflights offers flight deals from Buenos Aires to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Buenos Aires to Washington, D.C. Dulles Intl Airport?

    Currently, December is the cheapest month in which you can book a flight from Buenos Aires to Washington, D.C. Dulles Intl Airport (average of $232). Flying from Buenos Aires to Washington, D.C. Dulles Intl Airport in February is currently the most expensive (average of $777). 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.

See more FAQs

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Tysons
Owings Mills
Springfield
Arlington
Reston
Rockville
Herndon
Fredericksburg
Laurel
Hyattsville
Manassas
Hanover
Chantilly
Lanham
Falls Church
Waldorf
Silver Spring
Largo
Clinton

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Buenos Aires to Dulles Intl

Discover the top 3 airlines that operate flights from Buenos Aires to Dulles Intl. 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 2,558,603 searches. Data last updated June 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest$232Average$695FlexibilityNo cancel feeOn-time71%
DeltaCheapest$344Average$1,033FlexibilityNo cancel feeOn-timeN/A
Copa AirlinesCheapest$378Average$692FlexibilityNo cancel feeOn-time70%

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