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Dulles Intl

$364+ 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 8/18. Fares are subject to change and may not be available on all flights or dates of travel.
BUE — IAD
Aug 23 — Aug 301
Sun 8/23
Sun 8/30
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 July 24, 2026.

This American Airlines deal was found by Cheapflights users on 7/22. 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 8/49:15 am
EZE
-
IAD
2 stops15h 55m
American Airlines
Mon 8/241:23 pm
IAD
-
EZE
2 stops18h 22m
American Airlines
Deal found 7/22$632
This Gotogate deal was found by Cheapflights users on 7/19. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/293:48 am
EZE
-
IAD
1 stop21h 45m
Copa Airlines
Tue 8/112:25 am
IAD
-
EZE
1 stop25h 11m
Copa Airlines
Deal found 7/19$641
This American Airlines deal was found by Cheapflights users on 7/21. 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 11/239:10 pm
EZE
-
IAD
2 stops22h 01m
American Airlines
Wed 12/29:15 am
IAD
-
EZE
2 stops20h 10m
American Airlines
Deal found 7/21$644
This Avianca deal was found by Cheapflights users on 7/19. 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 8/47:10 am
EZE
-
IAD
2 stops20h 35m
Avianca
Tue 8/186:50 am
IAD
-
EZE
1 stop21h 50m
Avianca
Deal found 7/19$646
This Avianca deal was found by Cheapflights users on 7/19. 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 8/47:00 am
AEP
-
IAD
2 stops20h 45m
Avianca
Tue 8/186:50 am
IAD
-
AEP
1 stop21h 50m
Avianca
Deal found 7/19$646
This Avianca deal was found by Cheapflights users on 7/22. 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 8/47:10 am
EZE
-
IAD
2 stops20h 35m
Avianca
Fri 8/146:50 am
IAD
-
EZE
1 stop21h 50m
Avianca
Deal found 7/22$647
This Avianca deal was found by Cheapflights users on 7/22. 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 8/37:00 am
AEP
-
IAD
2 stops20h 45m
Avianca
Fri 8/213:35 pm
IAD
-
AEP
1 stop13h 05m
Avianca
Deal found 7/22$647
This Avianca deal was found by Cheapflights users on 7/20. 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.
Thu 8/67:00 am
AEP
-
IAD
2 stops20h 45m
Avianca
Mon 8/246:50 am
IAD
-
AEP
1 stop21h 50m
Avianca
Deal found 7/20$649
This United Airlines deal was found by Cheapflights users on 7/21. 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 7/319:00 pm
EZE
-
IAD
1 stop28h 31m
United Airlines
Sun 8/166:30 am
IAD
-
EZE
1 stop24h 30m
United Airlines
Deal found 7/21$652
This United Airlines deal was found by Cheapflights users on 7/21. 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 8/69:00 pm
EZE
-
IAD
1 stop15h 28m
United Airlines
Sun 8/166:30 am
IAD
-
EZE
1 stop24h 30m
United Airlines
Deal found 7/21$661
This Copa Airlines deal was found by Cheapflights users on 7/23. 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 8/48:59 am
EZE
-
IAD
1 stop31h 06m
Copa Airlines
Sun 8/232:25 am
IAD
-
EZE
1 stop21h 26m
Copa Airlines
Deal found 7/23$672
This Copa Airlines deal was found by Cheapflights users on 7/22. 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 8/62:49 pm
EZE
-
IAD
1 stop14h 32m
Copa Airlines
Mon 8/244:34 pm
IAD
-
EZE
1 stop14h 23m
Copa Airlines
Deal found 7/22$673

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 July 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$632
(American Airlines)

One-way from

$364
(American Airlines)

Popular in

May

Cheapest in

September

Average price

$867
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. 6% potential increase in price ($58 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 24, 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

Wed 8/5

2:17 am-4:21 am

1 stop27h 04m

Washington, D.C. Dulles Intl

Mon 8/17

6:26 am-4:36 am

1 stop21h 10m

$673
Quickest round-trip

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Thu 8/6

2:49 pm-4:21 am

1 stop14h 32m

Washington, D.C. Dulles Intl

Mon 8/24

4:34 pm-7:57 am

1 stop14h 23m

$673

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Tue 8/4

8:59 am-3:05 pm

1 stop31h 06m

Washington, D.C. Dulles Intl

Fri 8/14

6:26 am-10:26 pm

1 stop15h 00m

$697

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Wed 9/23

5:25 am-4:20 am

1 stop23h 55m

Washington, D.C. Dulles Intl

Wed 9/30

2:25 am-3:15 am

1 stop23h 50m

$736

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Wed 9/30

5:25 am-12:32 am

1 stop20h 07m

Washington, D.C. Dulles Intl

Tue 10/20

4:34 pm-12:51 am

1 stop31h 17m

$736

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Fri 10/16

8:59 am-4:20 am

1 stop20h 21m

Washington, D.C. Dulles Intl

Sun 11/1

3:37 pm-11:43 pm

1 stop30h 06m

$736

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Wed 10/21

3:48 am-12:32 am

1 stop21h 44m

Washington, D.C. Dulles Intl

Wed 11/11

1:16 am-3:52 am

1 stop24h 36m

$736

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Tue 10/27

7:40 am-4:20 am

1 stop21h 40m

Washington, D.C. Dulles Intl

Sun 11/1

3:37 pm-11:43 pm

1 stop30h 06m

$736

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Wed 9/23

8:10 pm-9:09 am

1 stop13h 59m

Washington, D.C. Dulles Intl

Thu 10/1

3:15 pm-9:40 am

2 stops17h 25m

$739

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Tue 8/25

8:10 pm-11:33 am

1 stop16h 23m

Washington, D.C. Dulles Intl

Thu 9/3

12:30 pm-9:40 am

2 stops20h 10m

$739

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/19

Showing 1-10 of 43 resultsSorted by cheapest first
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5
  • 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 $717). Flying from Buenos Aires to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $899). 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?

Airfare is below average for this route at the moment.
Buenos Aires to Washington, D.C. Dulles Intl Airport flights typically cost between $716 and $888 in August.
The cheapest round-trip price found within the last 5 days was $632 on American Airlines (Aug 4-Aug 24).

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated July 24, 2026.
Get a feel of what it's like to fly with Delta and Avianca from Buenos Aires to Washington, D.C. Dulles Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,484 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.8

Overall

7.8

Comfort

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,
Delta
7.8
Good
8,484 reviews
Delta
7.8
Good
8,484 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.8

Overall

7.8

Comfort

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,
Avianca
6.5
Okay
2,520 reviews
Delta
7.8
Good
8,484 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.8

Overall

7.8

Comfort

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,

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?

    American Airlines, Avianca, and LATAM Airlines can get you from Buenos Aires to Washington, D.C. Dulles Intl Airport in just under 15h 55m. Your travel time can differ by up to 4h 53m. 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 $717). Flying from Buenos Aires to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $899). 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
Arlington
Owings Mills
Springfield
Lanham
Reston
Herndon
Rockville
Chantilly
Hyattsville
Fredericksburg
Falls Church
Hanover
Manassas
Laurel
Sterling
Clinton
Hunt Valley
Cordova

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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 July 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest$232Average$695FlexibilityNo cancel feeOn-time71%
DeltaCheapest$344Average$943FlexibilityNo cancel feeOn-timeN/A
Copa AirlinesCheapest$378Average$656FlexibilityNo cancel feeOn-time70%

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