Which airport is the most popular layover for flights between Washington, D.C. Dulles Intl Airport and Buenos Aires?

Panama City (PTY) was the most common stop: 47% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest connection time from Washington, D.C. Dulles Intl Airport to Buenos Aires?

Houston (IAH) has the shortest average layover time for this route: 1h 56m.

Which layover airport offers the lowest fares from Washington, D.C. Dulles Intl Airport to Buenos Aires?

Flights via Houston (IAH) offer the lowest average round-trip price of $629.

What airlines fly to Buenos Aires?

Copa Airlines, Avianca and Delta are the top three most popular airlines that fly to Buenos Aires from Washington, D.C. Dulles Intl Airport according to our data. Copa Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Buenos Aires. Keep in mind that there are 5 different airlines that fly to Buenos Aires on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from Washington, D.C. Dulles Intl Airport to Buenos Aires?

Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 12h 55m.

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Buenos Aires?

Avianca and LATAM Airlines are the most popular carriers operating from Washington, D.C. Dulles Intl to Buenos Aires

How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Buenos Aires?

The number of operators available for flights from Washington, D.C. Dulles Intl Airport to Buenos Aires is 5 as of April 2026.

How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Buenos Aires?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Buenos Aires.

What documentation or ID do you need to fly to Buenos Aires?

The necessary travel and health documents for your Buenos Aires trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$251 Cheap Flights from Washington, D.C. Dulles Intl Airport to Buenos Aires in 2026

Q: What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and Buenos Aires?

Prices are currently low for flights on this route. Typical prices usually range from $897 to $614. The lowest price recently found on this route was $578.

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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Buenos Aires

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:50 am - 12:25 am

IAD

EZE

16h 35m

1 stop

7:10 am - 2:45 am

EZE

IAD

20h 35m

2 stops

$578Avianca

Thu, May 14 - Thu, May 21

3:35 pm - 5:40 am

IAD

EZE

13h 05m

1 stop

4:50 pm - 5:20 am

EZE

IAD

13h 30m

1 stop

$584Avianca

Mon, Apr 13 - Mon, Apr 27

3:35 pm - 5:40 am

IAD

EZE

13h 05m

1 stop

4:50 pm - 5:20 am

EZE

IAD

13h 30m

1 stop

$585Avianca

Sun, Apr 26 - Mon, May 18

6:50 am - 12:25 am

IAD

EZE

16h 35m

1 stop

7:10 am - 2:45 am

EZE

IAD

20h 35m

2 stops

$586Avianca

Wed, Apr 29 - Wed, May 6

6:50 am - 5:40 am

IAD

EZE

21h 50m

1 stop

7:10 am - 2:45 am

EZE

IAD

20h 35m

2 stops

$587Avianca

Sun, Apr 26 - Sun, May 17

3:35 pm - 5:40 am

IAD

EZE

13h 05m

1 stop

7:10 am - 2:45 am

EZE

IAD

20h 35m

2 stops

$588Avianca

Wed, Apr 29 - Thu, May 7

4:33 pm - 12:50 am

IAD

EZE

31h 17m

1 stop

2:49 pm - 4:21 am

EZE

IAD

14h 32m

1 stop

$589Copa Airlines

Sun, Apr 26 - Sun, May 17

8:30 am - 8:00 am

IAD

EZE

22h 30m

1 stop

9:00 pm - 12:31 am

EZE

IAD

28h 31m

1 stop

$592United Airlines

Tue, May 5 - Tue, May 26

8:30 am - 8:00 am

IAD

EZE

22h 30m

1 stop

9:00 pm - 11:28 am

EZE

IAD

15h 28m

1 stop

$601United Airlines

Tue, May 5 - Thu, May 7

5:31 pm - 7:40 pm

IAD

AEP

25h 09m

2 stops

8:05 pm - 6:41 pm

AEP

IAD

23h 36m

2 stops

$637LATAM Airlines

Thu, Jun 4 - Mon, Jun 8

Avianca flights from Washington, D.C. Dulles Intl Airport to Buenos Aires

Our best Avianca deals on Washington, D.C. Dulles Intl Airport to Buenos Aires flight tickets

Avianca

May 14

IAD6:50 amWashington, D.C. Dulles Intl

16h 35m

1 stop

EZE12:25 amBuenos Aires Ministro Pistarini

May 21

EZE7:10 amBuenos Aires Ministro Pistarini

20h 35m

2 stops

IAD2:45 amWashington, D.C. Dulles Intl

$578

Avianca

Apr 13

IAD3:35 pmWashington, D.C. Dulles Intl

13h 05m

1 stop

EZE5:40 amBuenos Aires Ministro Pistarini

Apr 27

EZE4:50 pmBuenos Aires Ministro Pistarini

13h 30m

1 stop

IAD5:20 amWashington, D.C. Dulles Intl

$584

Avianca

Apr 26

IAD3:35 pmWashington, D.C. Dulles Intl

13h 05m

1 stop

EZE5:40 amBuenos Aires Ministro Pistarini

May 18

EZE4:50 pmBuenos Aires Ministro Pistarini

13h 30m

1 stop

IAD5:20 amWashington, D.C. Dulles Intl

$585

Copa Airlines flights from Washington, D.C. Dulles Intl Airport to Buenos Aires

Our best Copa Airlines deals on Washington, D.C. Dulles Intl Airport to Buenos Aires flight tickets

Copa Airlines

Apr 26

IAD4:33 pmWashington, D.C. Dulles Intl

28h 52m

1 stop

EZE10:25 pmBuenos Aires Ministro Pistarini

May 18

EZE2:49 pmBuenos Aires Ministro Pistarini

14h 32m

1 stop

IAD4:21 amWashington, D.C. Dulles Intl

$589

Copa Airlines

Apr 24

IAD9:32 amWashington, D.C. Dulles Intl

17h 58m

1 stop

EZE4:30 amBuenos Aires Ministro Pistarini

May 19

EZE9:02 amBuenos Aires Ministro Pistarini

20h 19m

1 stop

IAD4:21 amWashington, D.C. Dulles Intl

$609

Copa Airlines

Jun 11

IAD2:21 amWashington, D.C. Dulles Intl

24h 59m

1 stop

EZE4:20 amBuenos Aires Ministro Pistarini

Jun 15

EZE3:48 amBuenos Aires Ministro Pistarini

21h 45m

1 stop

IAD12:33 amWashington, D.C. Dulles Intl

$612

momondo Fare Finder

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

Price

Cheapest round-trip

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Thu 5/14

6:50 am-12:25 am

1 stop16h 35m

Buenos Aires Ministro Pistarini

Thu 5/21

7:10 am-2:45 am

2 stops20h 35m

$578

Quickest round-trip

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Mon 4/13

3:35 pm-5:40 am

1 stop13h 05m

Buenos Aires Ministro Pistarini

Mon 4/27

4:50 pm-5:20 am

1 stop13h 30m

$584

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Sun 4/26

3:35 pm-5:40 am

1 stop13h 05m

Buenos Aires Ministro Pistarini

Mon 5/18

4:50 pm-5:20 am

1 stop13h 30m

$585

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Wed 4/29

6:50 am-12:25 am

1 stop16h 35m

Buenos Aires Ministro Pistarini

Wed 5/6

7:10 am-2:45 am

2 stops20h 35m

$586

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Sun 4/26

6:50 am-5:40 am

1 stop21h 50m

Buenos Aires Ministro Pistarini

Sun 5/17

7:10 am-2:45 am

2 stops20h 35m

$587

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Wed 4/29

3:35 pm-5:40 am

1 stop13h 05m

Buenos Aires Ministro Pistarini

Thu 5/7

7:10 am-2:45 am

2 stops20h 35m

$588

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Sun 4/26

4:33 pm-12:50 am

1 stop31h 17m

Buenos Aires Ministro Pistarini

Sun 5/17

2:49 pm-4:21 am

1 stop14h 32m

$589

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Tue 5/5

8:30 am-8:00 am

1 stop22h 30m

Buenos Aires Ministro Pistarini

Tue 5/26

9:00 pm-12:31 am

1 stop28h 31m

$592

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Tue 5/5

8:30 am-8:00 am

1 stop22h 30m

Buenos Aires Ministro Pistarini

Thu 5/7

9:00 pm-11:28 am

1 stop15h 28m

$601

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Thu 6/4

5:31 pm-7:40 pm

2 stops25h 09m

Buenos Aires Jorge Newbery

Mon 6/8

8:05 pm-6:41 pm

2 stops23h 36m

$637

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Buenos Aires

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and Buenos Aires?

What is the cheapest month to fly to Buenos Aires?

The cheapest month to fly to Buenos Aires from Washington, D.C. Dulles Intl Airport is in September. Flight prices, which tend to average around $639, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, then book flights to Buenos Aires from Washington, D.C. Dulles Intl Airport during October instead. Flights to Buenos Aires in October, while not as cheap as those in September, still average around $647.

How far in advance should I book a flight to Buenos Aires?

You are more likely to see cheaper flights to Buenos Aires from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $777 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buenos Aires from Washington, D.C. Dulles Intl Airport for as low as $628 on momondo.

Can stopping save me money on Washington, D.C. Dulles Intl Airport to Buenos Aires flights?

You could potentially save up to 8% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Buenos Aires flight.

How have Washington, D.C. Dulles Intl Airport to Buenos Aires flight prices changed over time?

When to book flights from Washington, D.C. Dulles Intl Airport to Buenos Aires

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to Buenos Aires according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Washington, D.C. Dulles Intl Airport to Buenos Aires (IAD to BUE) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Buenos Aires

Fastest flight time	13h 05m
Direct flights	None

The fastest flight from Washington, D.C. Dulles Intl Airport to Buenos Aires takes 13h 05m

There are no direct flights from Washington, D.C. Dulles Intl Airport to Buenos Aires. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Buenos Aires.

Search flight deals

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Buenos Aires

How far is Washington, D.C. Dulles Intl to Buenos Aires by plane?
The straight-line distance from Washington, D.C. Dulles Intl to Buenos Aires is 5223.3 mi. Typically, this will take 13h 05m by plane in normal conditions.
When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Buenos Aires?
Prices for flights from Washington, D.C. Dulles Intl Airport to Buenos Aires are refreshed on a daily basis.
How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Buenos Aires?
The number of operators available for flights from Washington, D.C. Dulles Intl Airport to Buenos Aires is 5 as of April 2026.
How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Buenos Aires?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Buenos Aires.
What documentation or ID do you need to fly to Buenos Aires?
The necessary travel and health documents for your Buenos Aires trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Washington, D.C. Dulles Intl Airport to Buenos Aires?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Washington, D.C. Dulles Intl Airport to Buenos Aires is Avianca (40% of total bookings). The next most popular airlines are Copa Airlines (24%), Delta (22%), and United Airlines (9%).

Best airlines flying from Washington, D.C. Dulles Intl Airport to Buenos Aires

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Buenos Aires with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $274	Free Cancellation	Rating 7.9 8,385 reviews	Search Delta flights
Copa Airlines	PriceFrom $355	Free Cancellation	Rating 7.5 1,577 reviews	Search Copa Airlines flights
Avianca	PriceFrom $536	Free Cancellation	Rating 6.5 2,505 reviews	Search Avianca flights
United Airlines	PriceFrom $620	Free Cancellation	Rating 7.4 9,544 reviews	Search United Airlines flights
LATAM Airlines	PriceFrom $635	Free Cancellation	Rating 7.4 1,908 reviews	Search LATAM Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Buenos Aires?

It is quick and easy to find Washington, D.C. to Buenos Aires flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Buenos Aires that suits you.

Can I find flights from Washington, D.C. to Buenos Aires with flexible booking policies on momondo?

Flights from Washington, D.C. to Buenos Aires with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Washington, D.C. to Buenos Aires?

momondo provides multiple filters to help you find the best flight to Buenos Aires from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Washington, D.C. to Buenos Aires right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Washington, D.C. to Buenos Aires now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Buenos Aires and let you know when they change.

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Cheap flights from Washington, D.C. Dulles Intl Airport to Buenos Aires from $251

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Avianca flights from Washington, D.C. Dulles Intl Airport to Buenos Aires

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Our best Copa Airlines deals on Washington, D.C. Dulles Intl Airport to Buenos Aires flight tickets

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See travel insights to Buenos Aires from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Buenos Aires

What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and Buenos Aires?

What is the cheapest month to fly to Buenos Aires?

How far in advance should I book a flight to Buenos Aires?

Can stopping save me money on Washington, D.C. Dulles Intl Airport to Buenos Aires flights?

How have Washington, D.C. Dulles Intl Airport to Buenos Aires flight prices changed over time?

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Buenos Aires?

What airlines fly to Buenos Aires?

Which airport is the most popular layover for flights between Washington, D.C. Dulles Intl Airport and Buenos Aires?

Which layover airport offers the lowest fares from Washington, D.C. Dulles Intl Airport to Buenos Aires?

Which layover airport has the shortest travel time from Washington, D.C. Dulles Intl Airport to Buenos Aires?

Which layover airport has the shortest connection time from Washington, D.C. Dulles Intl Airport to Buenos Aires?

When to book flights from Washington, D.C. Dulles Intl Airport to Buenos Aires

Cheap Washington, D.C. Dulles Intl Airport to Buenos Aires (IAD to BUE) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Buenos Aires

Fastest flight time

Direct flights

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Buenos Aires

Best airlines flying from Washington, D.C. Dulles Intl Airport to Buenos Aires

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Buenos Aires with momondo

Why use momondo?

An easier way to manage your Buenos Aires trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Argentina

Fly into one of these airports located in Buenos Aires

Airports listed have a maximum distance of 17.0 mi from Buenos Aires

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List of cabin classes available on flights landing in Buenos Aires. Availability may vary depending on flight origin and airline.

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