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Dulles Intl

$388+ 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 7/17. Fares are subject to change and may not be available on all flights or dates of travel.
BUE — IAD
Apr 3 — Apr 101
Fri 4/3
Fri 4/10
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 March 4, 2026.

This FlightHub deal was found by Cheapflights users on 2/27. 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 5/14:50 pm
EZE
-
IAD
1 stop13h 30m
Avianca
Sat 5/96:50 am
IAD
-
EZE
1 stop21h 50m
Avianca
Deal found 2/27$613
This FlightHub deal was found by Cheapflights users on 3/1. 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 4/154:50 pm
EZE
-
IAD
1 stop13h 30m
Avianca
Wed 4/226:50 am
IAD
-
EZE
1 stop21h 50m
Avianca
Deal found 3/1$637
This Avianca deal was found by Cheapflights users on 2/27. 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 5/14:50 pm
EZE
-
IAD
1 stop13h 30m
Avianca
Thu 5/146:50 am
IAD
-
EZE
1 stop21h 50m
Avianca
Deal found 2/27$640
This Trip.com deal was found by Cheapflights users on 2/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:10 am
EZE
-
IAD
1 stop23h 10m
Avianca
Sun 5/173:35 pm
IAD
-
EZE
1 stop23h 05m
Avianca
Deal found 2/27$647
This FlightHub deal was found by Cheapflights users on 2/27. 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 4/194:50 pm
EZE
-
IAD
1 stop13h 30m
Avianca
Wed 4/296:50 am
IAD
-
EZE
1 stop16h 35m
Avianca
Deal found 2/27$658
This American Airlines deal was found by Cheapflights users on 2/27. 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 3/119:50 pm
EZE
-
IAD
2 stops19h 26m
American Airlines
Thu 3/192:03 pm
IAD
-
EZE
2 stops19h 26m
American Airlines
Deal found 2/27$659
This Priceline deal was found by Cheapflights users on 2/27. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/137:10 am
EZE
-
IAD
1 stop23h 10m
Avianca
Mon 4/206:50 am
IAD
-
EZE
1 stop21h 50m
Avianca
Deal found 2/27$663
This Trip.com deal was found by Cheapflights users on 2/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/144:50 pm
EZE
-
IAD
1 stop13h 30m
Avianca
Tue 4/216:50 am
IAD
-
EZE
1 stop21h 50m
Avianca
Deal found 2/28$665
This Trip.com deal was found by Cheapflights users on 2/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/144:50 pm
EZE
-
IAD
1 stop22h 25m
Multiple Airlines
Tue 4/214:33 pm
IAD
-
EZE
1 stop28h 52m
Multiple Airlines
Deal found 2/28$670
This Trip.com deal was found by Cheapflights users on 3/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/164:50 pm
EZE
-
IAD
1 stop13h 30m
Avianca
Thu 4/236:50 am
IAD
-
EZE
1 stop21h 50m
Avianca
Deal found 3/1$674
This Kiwi.com deal was found by Cheapflights users on 3/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/165:45 am
AEP
-
IAD
2 stops19h 49m
Multiple Airlines
Thu 4/233:35 pm
IAD
-
AEP
1 stop13h 05m
Multiple Airlines
Deal found 3/1$679
This Trip.com deal was found by Cheapflights users on 2/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:00 am
AEP
-
IAD
1 stop23h 20m
Avianca
Sun 5/176:50 am
IAD
-
AEP
1 stop21h 50m
Avianca
Deal found 2/27$681

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 March 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$613
(FlightHub)

One-way from

$388
(Avianca)

Popular in

July

Cheapest in

November

Average price

$886
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. 2% potential increase in price ($21 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 4, 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

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Wed 3/25

5:16 am-4:15 am

1 stop23h 59m

Washington, D.C. Dulles Intl

Mon 4/6

9:32 am-2:30 am

1 stop15h 58m

$677

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Wed 3/11

5:16 am-4:15 am

1 stop23h 59m

Washington, D.C. Dulles Intl

Tue 3/17

2:18 am-1:57 am

1 stop22h 39m

$677

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Tue 3/10

1:40 am-2:15 pm

1 stop13h 35m

Washington, D.C. Dulles Intl

Thu 3/19

3:35 pm-9:00 am

1 stop16h 25m

$684

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Wed 3/18

10:25 pm-12:39 pm

1 stop15h 14m

Washington, D.C. Dulles Intl

Sun 5/17

12:37 pm-9:45 am

1 stop20h 08m

$697

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Wed 3/11

8:55 pm-2:39 pm

1 stop18h 44m

Washington, D.C. Dulles Intl

Thu 3/19

6:01 am-9:00 am

1 stop25h 59m

$697

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Sun 4/19

1:10 pm-11:42 am

2 stops23h 32m

Washington, D.C. Dulles Intl

Wed 4/29

3:00 pm-9:45 am

1 stop17h 45m

$697

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Mon 3/16

11:55 pm-2:39 pm

1 stop15h 44m

Washington, D.C. Dulles Intl

Tue 3/24

7:59 pm-10:15 am

1 stop13h 16m

$697

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Fri 5/15

4:50 pm-5:20 am

1 stop13h 30m

Washington, D.C. Dulles Intl

Sun 5/24

5:35 pm-3:40 pm

2 stops21h 05m

$716

Buenos AiresWashington, D.C.

AEP - IAD

AEPIAD

Buenos Aires Jorge Newbery

Thu 5/21

7:00 am-5:20 am

1 stop23h 20m

Washington, D.C. Dulles Intl

Wed 8/12

3:35 pm-5:40 am

1 stop13h 05m

$720

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Thu 5/21

7:10 am-2:45 am

2 stops20h 35m

Washington, D.C. Dulles Intl

Wed 8/12

4:10 am-12:25 am

2 stops19h 15m

$731

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/28

Showing 1-10 of 41 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

How much does it cost to fly round-trip from Buenos Aires to Washington, D.C. Dulles Intl Airport?

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 March 4, 2026.
Get a feel of what it's like to fly with Copa Airlines 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.
Copa Airlines
7.5
Good
1,557 reviews

Comfort

7.4

Crew

8.1

Food

6.8

Boarding

7.8

Overall

7.5

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Juan,Dec 2025

EZE - PTY

The outbound flight from Boston was awful. The handicapped services were the worst i have ever seen. NEVER AGAIN. THIS WAS NOT WORTH ANYWHERE NEAR $4K.
Copa Airlines
7.5
Good
1,557 reviews
Copa Airlines
7.5
Good
1,557 reviews

Comfort

7.4

Crew

8.1

Food

6.8

Boarding

7.8

Overall

7.5

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Juan,Dec 2025

EZE - PTY

The outbound flight from Boston was awful. The handicapped services were the worst i have ever seen. NEVER AGAIN. THIS WAS NOT WORTH ANYWHERE NEAR $4K.
Avianca
6.5
Okay
2,494 reviews
Copa Airlines
7.5
Good
1,557 reviews

Comfort

7.4

Crew

8.1

Food

6.8

Boarding

7.8

Overall

7.5

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Juan,Dec 2025

EZE - PTY

The outbound flight from Boston was awful. The handicapped services were the worst i have ever seen. NEVER AGAIN. THIS WAS NOT WORTH ANYWHERE NEAR $4K.

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, Delta, and Avianca can get you from Buenos Aires to Washington, D.C. Dulles Intl Airport in just under 15h 14m. Your travel time can differ by up to 8h 45m. 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 $252. Other airlines that can offer you cheap pricing are Delta, from $270, and Copa Airlines, from $378. You may be able to fly from Buenos Aires to Washington, D.C. Dulles Intl Airport for 69% 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?

    $355 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.

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
Woodbridge
Arlington
Tysons
Owings Mills
Springfield
Silver Spring
Herndon
Hyattsville
Hanover
Laurel
Rockville
Upper Marlboro
Linthicum Heights
Fredericksburg
Largo
Bowie
Clinton
Towson
College Park

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 March 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest$252Average$686FlexibilityNo cancel feeOn-time71%
DeltaCheapest$270Average$1,033FlexibilityNo cancel feeOn-timeN/A
Copa AirlinesCheapest$378Average$713FlexibilityNo cancel feeOn-time70%

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