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

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

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: 42% of momondo users choosing 1-stop flights on this route connected there.

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 32% 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 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.

How long does it take to fly to Buenos Aires?

On average, it takes 13h 09m to fly from Washington, D.C. to Buenos Aires if you fly out of Washington, D.C. (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 Baltimore and into Buenos Aires Ministro Pistarini Airport, then the flight time is around 13h 16m.

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 55m.

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.

$251 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 $970 to $674. The lowest price recently found on this route was $572.

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Find the cheapest flights from Washington, D.C. 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 - 5:40 am

IAD

EZE

21h 50m

1 stop

4:50 pm - 2:15 pm

EZE

IAD

22h 25m

1 stop

$572Avianca

Mo, Apr 13 - So, Apr 26

6:50 am - 5:40 am

IAD

EZE

21h 50m

1 stop

4:50 pm - 5:20 am

EZE

IAD

13h 30m

1 stop

$583Avianca

Do, Mai 7 - Do, Mai 14

9:32 am - 2:30 am

IAD

EZE

15h 58m

1 stop

2:57 pm - 4:22 am

EZE

IAD

14h 25m

1 stop

$589Copa Airlines

Di, Apr 7 - Do, Apr 16

4:49 pm - 7:55 am

BWI

EZE

14h 06m

1 stop

2:22 am - 3:17 pm

EZE

BWI

13h 55m

1 stop

$589Copa Airlines

So, Apr 12 - Do, Apr 23

4:34 pm - 8:00 am

DCA

EZE

14h 26m

1 stop

9:00 pm - 11:40 am

EZE

DCA

15h 40m

1 stop

$601United Airlines

Mi, Mai 13 - Di, Mai 19

10:32 am - 11:05 am

IAD

EZE

23h 33m

2 stops

8:35 pm - 7:33 pm

EZE

IAD

23h 58m

2 stops

$601American Airlines

Di, Mai 5 - Di, Mai 26

7:16 pm - 8:50 am

BWI

EZE

12h 34m

1 stop

8:40 pm - 11:41 am

EZE

BWI

16h 01m

1 stop

$601American Airlines

Di, Apr 21 - Di, Mai 5

6:00 am - 8:00 am

BWI

EZE

25h 00m

1 stop

9:00 pm - 10:45 pm

EZE

BWI

26h 45m

1 stop

$609United Airlines

So, Mai 17 - Do, Mai 28

9:00 am - 9:45 am

DCA

EZE

23h 45m

1 stop

1:10 pm - 2:03 pm

EZE

DCA

25h 53m

1 stop

$627Delta

Mo, Apr 13 - So, Apr 26

9:00 am - 7:40 am

BWI

AEP

21h 40m

2 stops

8:05 pm - 4:28 pm

AEP

BWI

21h 23m

2 stops

$684Delta

Di, Apr 21 - Di, Apr 28

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

Apr 7

IAD9:32 amWashington, D.C. Dulles Intl

15h 58m

1 stop

EZE2:30 amBuenos Aires Ministro Pistarini

Apr 16

EZE2:57 pmBuenos Aires Ministro Pistarini

14h 25m

1 stop

IAD4:22 amWashington, D.C. Dulles Intl

$589

Copa Airlines

Apr 4

IAD2:21 amWashington, D.C. Dulles Intl

23h 09m

1 stop

EZE2:30 amBuenos Aires Ministro Pistarini

May 17

EZE2:49 pmBuenos Aires Ministro Pistarini

14h 32m

1 stop

IAD4:21 amWashington, D.C. Dulles Intl

$609

Copa Airlines

Apr 20

IAD2:21 amWashington, D.C. Dulles Intl

25h 09m

1 stop

EZE4:30 amBuenos Aires Ministro Pistarini

Apr 28

EZE2:57 pmBuenos Aires Ministro Pistarini

14h 25m

1 stop

IAD4:22 amWashington, D.C. Dulles Intl

$618

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

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

United Airlines

May 13

DCA4:34 pmWashington, D.C. Reagan-National

14h 26m

1 stop

EZE8:00 amBuenos Aires Ministro Pistarini

May 19

EZE9:00 pmBuenos Aires Ministro Pistarini

15h 40m

1 stop

DCA11:40 amWashington, D.C. Reagan-National

$601

United Airlines

May 17

BWI6:00 amBaltimore/Washington

25h 00m

1 stop

EZE8:00 amBuenos Aires Ministro Pistarini

May 28

EZE9:00 pmBuenos Aires Ministro Pistarini

26h 45m

1 stop

BWI10:45 pmBaltimore/Washington

$609

United Airlines

May 11

BWI7:05 pmBaltimore/Washington

35h 55m

2 stops

EZE8:00 amBuenos Aires Ministro Pistarini

May 28

EZE9:00 pmBuenos Aires Ministro Pistarini

20h 30m

1 stop

BWI4:30 pmBaltimore/Washington

$615

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. 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

Mo 4/13

6:50 am-5:40 am

1 stop21h 50m

Buenos Aires Ministro Pistarini

So 4/26

4:50 pm-2:15 pm

1 stop22h 25m

$572

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Do 5/7

6:50 am-5:40 am

1 stop21h 50m

Buenos Aires Ministro Pistarini

Do 5/14

4:50 pm-5:20 am

1 stop13h 30m

$583

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Di 4/7

9:32 am-2:30 am

1 stop15h 58m

Buenos Aires Ministro Pistarini

Do 4/16

2:57 pm-4:22 am

1 stop14h 25m

$589

Quickest round-trip

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

So 4/12

4:49 pm-7:55 am

1 stop14h 06m

Buenos Aires Ministro Pistarini

Do 4/23

2:22 am-3:17 pm

1 stop13h 55m

$589

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

Mi 5/13

4:34 pm-8:00 am

1 stop14h 26m

Buenos Aires Ministro Pistarini

Di 5/19

9:00 pm-11:40 am

1 stop15h 40m

$601

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Di 5/5

10:32 am-11:05 am

2 stops23h 33m

Buenos Aires Ministro Pistarini

Di 5/26

8:35 pm-7:33 pm

2 stops23h 58m

$601

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Di 4/21

7:16 pm-8:50 am

1 stop12h 34m

Buenos Aires Ministro Pistarini

Di 5/5

8:40 pm-11:41 am

1 stop16h 01m

$601

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

So 5/17

6:00 am-8:00 am

1 stop25h 00m

Buenos Aires Ministro Pistarini

Do 5/28

9:00 pm-10:45 pm

1 stop26h 45m

$609

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

Mo 4/13

9:00 am-9:45 am

1 stop23h 45m

Buenos Aires Ministro Pistarini

So 4/26

1:10 pm-2:03 pm

1 stop25h 53m

$627

BaltimoreBuenos Aires

BWI - AEP

BWIAEP

Baltimore/Washington

Di 4/21

9:00 am-7:40 am

2 stops21h 40m

Buenos Aires Jorge Newbery

Di 4/28

8:05 pm-4:28 pm

2 stops21h 23m

$684

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 $768 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	13h 05m
Direct flights	None

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

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.. 13h 05m 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 19%, Copa Airlines with 17%, 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 8,328 reviews	Search Delta flights
LATAM Airlines	PriceFrom $278	Free Cancellation	Rating 7.4 1,905 reviews	Search LATAM Airlines flights
United Airlines	PriceFrom $344	Free Cancellation	Rating 7.4 9,482 reviews	Search United Airlines flights
Copa Airlines	PriceFrom $355	Free Cancellation	Rating 7.5 1,577 reviews	Search Copa Airlines flights
Avianca	PriceFrom $586	Free Cancellation	Rating 6.5 2,505 reviews	Search Avianca flights
American Airlines	PriceFrom $600	Free Cancellation	Rating 7.1 11,494 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 $251

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 5/4. 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

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

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

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

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

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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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