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

Flights connecting via Atlanta (ATL) have the shortest average one-way travel time: 12h 57m.

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

Flights via Mexico City (MEX) offer the lowest average round-trip price of $564.

What airlines fly to Buenos Aires?

Copa Airlines, Delta and Avianca are the top three most popular airlines that fly to Buenos Aires from Washington, D.C. according to our data. Copa Airlines is the first choice among our users, with 33% of people opting to fly with this airline when traveling to Buenos Aires. Keep in mind that there are 6 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 connection time from Washington, D.C. to Buenos Aires?

Atlanta (ATL) has the shortest average layover time for this route: 1h 34m.

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

Panama City (PTY) was the most common stop: 41% of momondo users choosing 1-stop flights on this route connected there.

How long does it take to fly to Buenos Aires?

On average, it takes 12h 46m to fly from Washington, D.C. to Buenos Aires if you fly out of Baltimore (the most popular airport in Washington, D.C.) and into Buenos Aires Ministro Pistarini Airport (the most popular airport in Buenos Aires). If you’re flying out of Washington, D.C. and into Buenos Aires Ministro Pistarini Airport, then the flight time is around 13h 05m.

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

Avianca, United Airlines, and Copa Airlines are the most popular carriers operating from Washington, D.C. to Buenos Aires

When did momondo last update prices for flights from Washington, D.C. to Buenos Aires?

Prices for flights from Washington, D.C. to Buenos Aires are refreshed on a daily basis.

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

There are 6 operators available for flights from Washington, D.C. to Buenos Aires as of March 2026.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to Buenos Aires.

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

The travel and health documents you'll need for your trip to Buenos Aires may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Buenos Aires. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$271 Cheap Flights from Washington, D.C. to Buenos Aires in 2026

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

Prices are currently low for flights on this route. Typical prices usually range from $701 to $984. The lowest price recently found on this route was $601.

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

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One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:30 am - 8:00 am

IAD

EZE

22h 30m

1 stop

9:00 pm - 11:33 am

EZE

IAD

15h 33m

1 stop

$601United Airlines

Mon, Apr 13 - Wed, Apr 15

6:00 am - 8:00 am

DCA

EZE

25h 00m

1 stop

9:00 pm - 11:40 am

EZE

DCA

15h 40m

1 stop

$601United Airlines

Wed, May 6 - Sun, May 17

4:33 pm - 2:30 am

IAD

EZE

32h 57m

1 stop

2:57 pm - 3:06 pm

EZE

IAD

25h 09m

1 stop

$607Copa Airlines

Sun, Apr 5 - Tue, Apr 21

9:37 am - 7:55 am

IAD

EZE

21h 18m

1 stop

9:02 am - 4:21 am

EZE

IAD

20h 19m

1 stop

$609Copa Airlines

Wed, May 6 - Tue, May 12

6:50 am - 12:25 am

IAD

EZE

16h 35m

1 stop

4:50 pm - 5:20 am

EZE

IAD

13h 30m

1 stop

$611Avianca

Mon, Apr 6 - Mon, Apr 13

12:40 pm - 8:00 am

DCA

EZE

18h 20m

1 stop

9:00 pm - 9:04 pm

EZE

DCA

25h 04m

1 stop

$613United Airlines

Mon, Apr 20 - Mon, Apr 27

6:50 am - 5:40 am

IAD

EZE

21h 50m

1 stop

7:10 am - 2:45 am

EZE

IAD

20h 35m

2 stops

$630Avianca

Wed, May 6 - Tue, May 12

1:40 pm - 9:45 am

DCA

EZE

19h 05m

1 stop

8:10 pm - 11:44 pm

EZE

DCA

28h 34m

1 stop

$642Delta

Wed, Apr 22 - Sun, May 10

7:16 pm - 8:50 am

BWI

EZE

12h 34m

1 stop

8:40 pm - 11:41 am

EZE

BWI

16h 01m

1 stop

$671American Airlines

Tue, Apr 21 - Tue, May 5

7:14 pm - 9:45 am

BWI

EZE

13h 31m

1 stop

1:10 pm - 6:14 pm

EZE

BWI

30h 04m

2 stops

$675Delta

Wed, Apr 8 - Mon, Apr 13

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

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

Copa Airlines

May 6

IAD9:37 amWashington, D.C. Dulles Intl

21h 18m

1 stop

EZE7:55 amBuenos Aires Ministro Pistarini

May 12

EZE9:02 amBuenos Aires Ministro Pistarini

20h 19m

1 stop

IAD4:21 amWashington, D.C. Dulles Intl

$609

Copa Airlines

Apr 7

IAD4:33 pmWashington, D.C. Dulles Intl

32h 57m

1 stop

EZE2:30 amBuenos Aires Ministro Pistarini

Apr 14

EZE2:57 pmBuenos Aires Ministro Pistarini

14h 25m

1 stop

IAD4:22 amWashington, D.C. Dulles Intl

$623

Copa Airlines

Apr 6

IAD9:32 amWashington, D.C. Dulles Intl

15h 58m

1 stop

EZE2:30 amBuenos Aires Ministro Pistarini

Apr 19

EZE2:57 pmBuenos Aires Ministro Pistarini

14h 25m

1 stop

IAD4:22 amWashington, D.C. Dulles Intl

$624

American Airlines flights from Washington, D.C. to Buenos Aires

Our best American Airlines deals on Washington, D.C. to Buenos Aires flight tickets

American Airlines

Apr 21

BWI11:31 amBaltimore/Washington

17h 39m

1 stop

EZE6:10 amBuenos Aires Ministro Pistarini

May 5

EZE8:40 pmBuenos Aires Ministro Pistarini

16h 01m

1 stop

BWI11:41 amBaltimore/Washington

$671

American Airlines

May 5

IAD3:53 pmWashington, D.C. Dulles Intl

18h 12m

2 stops

EZE11:05 amBuenos Aires Ministro Pistarini

May 26

EZE10:35 pmBuenos Aires Ministro Pistarini

20h 59m

2 stops

IAD6:34 pmWashington, D.C. Dulles Intl

$680

American Airlines

Mar 15

DCA12:25 pmWashington, D.C. Reagan-National

21h 04m

1 stop

EZE10:29 amBuenos Aires Ministro Pistarini

Mar 22

EZE8:15 pmBuenos Aires Ministro Pistarini

21h 22m

1 stop

DCA4:37 pmWashington, D.C. Reagan-National

$927

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. to Buenos Aires that are best for you.

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Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Mon 4/13

8:30 am-8:00 am

1 stop22h 30m

Buenos Aires Ministro Pistarini

Wed 4/15

9:00 pm-11:33 am

1 stop15h 33m

$601

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

Wed 5/6

6:00 am-8:00 am

1 stop25h 00m

Buenos Aires Ministro Pistarini

Sun 5/17

9:00 pm-11:40 am

1 stop15h 40m

$601

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Sun 4/5

4:33 pm-2:30 am

1 stop32h 57m

Buenos Aires Ministro Pistarini

Tue 4/21

2:57 pm-3:06 pm

1 stop25h 09m

$607

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Wed 5/6

9:37 am-7:55 am

1 stop21h 18m

Buenos Aires Ministro Pistarini

Tue 5/12

9:02 am-4:21 am

1 stop20h 19m

$609

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Mon 4/6

6:50 am-12:25 am

1 stop16h 35m

Buenos Aires Ministro Pistarini

Mon 4/13

4:50 pm-5:20 am

1 stop13h 30m

$611

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

Mon 4/20

12:40 pm-8:00 am

1 stop18h 20m

Buenos Aires Ministro Pistarini

Mon 4/27

9:00 pm-9:04 pm

1 stop25h 04m

$613

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Wed 5/6

6:50 am-5:40 am

1 stop21h 50m

Buenos Aires Ministro Pistarini

Tue 5/12

7:10 am-2:45 am

2 stops20h 35m

$630

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

Wed 4/22

1:40 pm-9:45 am

1 stop19h 05m

Buenos Aires Ministro Pistarini

Sun 5/10

8:10 pm-11:44 pm

1 stop28h 34m

$642

Quickest round-trip

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Tue 4/21

7:16 pm-8:50 am

1 stop12h 34m

Buenos Aires Ministro Pistarini

Tue 5/5

8:40 pm-11:41 am

1 stop16h 01m

$671

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Wed 4/8

7:14 pm-9:45 am

1 stop13h 31m

Buenos Aires Ministro Pistarini

Mon 4/13

1:10 pm-6:14 pm

2 stops30h 04m

$675

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. 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

Other information

What is the typical price of a round-trip flight between Washington, D.C. 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. is in August. 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 August, then book flights to Buenos Aires from Washington, D.C. during September instead. Flights to Buenos Aires in September, while not as cheap as those in August, 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. when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $769 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. for as low as $628 on momondo.

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

You could potentially save up to 2% on your flight if you consider stops on a Washington, D.C. to Buenos Aires flight.

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

As of March 2026, prices for Washington, D.C. to Buenos Aires flights are approximately 41% cheaper when compared to flights at the same time last year.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. 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. to Buenos Aires (WAS to BUE) flight deals and tips

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

Fastest flight time	12h 55m
Direct flights	None

The fastest flight from Washington, D.C. to Buenos Aires takes 12h 55m

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

Search flight deals

How far is Washington, D.C. to Buenos Aires by plane?
Buenos Aires is 5214.3 mi away from Washington, D.C.. 12h 55m is a normal flight duration for this route.
When did momondo last update prices for flights from Washington, D.C. to Buenos Aires?
Prices for flights from Washington, D.C. to Buenos Aires are refreshed on a daily basis.
How many operators does momondo search for flights from Washington, D.C. to Buenos Aires?
There are 6 operators available for flights from Washington, D.C. to Buenos Aires as of March 2026.
How old do you have to be to fly from Washington, D.C. to Buenos Aires?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to Buenos Aires.
What documentation or ID do you need to fly to Buenos Aires?
The travel and health documents you'll need for your trip to Buenos Aires may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Buenos Aires. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Washington, D.C. to Buenos Aires?
Based on momondo bookings for flights between Washington, D.C. and Buenos Aires, the leading airline is United Airlines, making up 20% of the total bookings. Other popular airlines include Delta with 20%, Copa Airlines with 18%, and American Airlines with 17%.

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

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $274	Free Cancellation	Rating 7.9 8,276 reviews	Search Delta flights
LATAM Airlines	PriceFrom $278	Free Cancellation	Rating 7.4 1,918 reviews	Search LATAM Airlines flights
United Airlines	PriceFrom $344	Free Cancellation	Rating 7.4 9,409 reviews	Search United Airlines flights
Copa Airlines	PriceFrom $356	Free Cancellation	Rating 7.5 1,569 reviews	Search Copa Airlines flights
Avianca	PriceFrom $586	Free Cancellation	Rating 6.5 2,498 reviews	Search Avianca flights
American Airlines	PriceFrom $600	Free Cancellation	Rating 7.1 11,414 reviews	Search American Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Buenos Aires. momondo saves you time and could save you money on your trip.

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

All flight searches from Washington, D.C. to Buenos Aires on momondo can be filtered to show those which offer flexible booking policies.

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 simply researching potential flights to Buenos Aires, momondo offers a useful price alert feature which will track prices for flights to Buenos Aires from Washington, D.C. and alert you when they change.

An easier way to manage your Buenos Aires trip

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Cheap flights from Washington, D.C. to Buenos Aires from $269

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Buenos Aires departing on 6/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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

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

American Airlines flights from Washington, D.C. to Buenos Aires

Our best American Airlines deals on Washington, D.C. 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. to Buenos Aires

What is the typical price of a round-trip flight between Washington, D.C. 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. to Buenos Aires flights?

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

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

What airlines fly to Buenos Aires?

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

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

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

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

How long does it take to fly to Buenos Aires?

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

Cheap Washington, D.C. to Buenos Aires (WAS to BUE) flight deals and tips

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

Fastest flight time

Direct flights

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

Compare and see reviews for airlines that fly from Washington, D.C. 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

Fly your favorite airline to Buenos Aires

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Buenos Aires

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

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