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

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

What airlines fly to Buenos Aires?

Copa Airlines, Delta and LATAM Airlines 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 31% 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.

How long does it take to fly to Buenos Aires?

On average, it takes 12h 58m 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 14h 21m.

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

Flights connecting via Miami (MIA) have the shortest average one-way travel time: 13h 05m.

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

Bogotá (BOG) has the shortest average layover time for this route: 1h 28m.

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.

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

Panama City (PTY) was the most common stop: 30% of momondo users choosing 1-stop flights on this route connected there.

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 June 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.

$287 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 $698 to $904. The lowest price recently found on this route was $655.

Discover deals from 900+ travel sites with momondo.

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.

6:25 am - 2:30 am

IAD

EZE

19h 05m

1 stop

12:10 am - 4:21 am

EZE

IAD

29h 11m

1 stop

$655Copa Airlines

Tue, Jun 30 - Mon, Jul 6

6:01 pm - 9:45 am

IAD

EZE

14h 44m

1 stop

1:10 pm - 2:34 pm

EZE

IAD

26h 24m

2 stops

$659LATAM Airlines

Sun, Jul 5 - Sat, Aug 1

7:15 am - 8:00 am

DCA

EZE

23h 45m

2 stops

9:00 pm - 6:31 pm

EZE

DCA

22h 31m

1 stop

$667United Airlines

Wed, Jul 1 - Tue, Jul 7

5:46 pm - 9:45 am

IAD

EZE

14h 59m

1 stop

8:10 pm - 4:46 pm

EZE

IAD

21h 36m

1 stop

$667Delta

Fri, Jul 17 - Mon, Jul 27

5:07 pm - 9:45 am

BWI

EZE

15h 38m

1 stop

8:10 pm - 9:24 am

EZE

BWI

14h 14m

1 stop

$667Delta

Wed, Jul 1 - Tue, Jul 7

10:20 pm - 8:00 am

IAD

EZE

32h 40m

1 stop

9:00 pm - 11:28 am

EZE

IAD

15h 28m

1 stop

$676United Airlines

Tue, Jul 21 - Wed, Jul 29

6:39 pm - 8:50 am

BWI

EZE

13h 11m

1 stop

9:15 am - 11:52 pm

EZE

BWI

15h 37m

1 stop

$679American Airlines

Tue, Jul 21 - Thu, Jul 30

6:01 am - 8:15 pm

BWI

EZE

13h 14m

1 stop

10:35 pm - 1:03 pm

EZE

BWI

15h 28m

2 stops

$682American Airlines

Wed, Jul 1 - Sun, Jul 5

5:45 am - 5:40 am

IAD

AEP

21h 55m

1 stop

7:00 am - 1:40 am

AEP

IAD

20h 40m

2 stops

$729Avianca

Wed, Dec 2 - Sun, Dec 20

5:45 am - 5:40 am

IAD

AEP

21h 55m

1 stop

7:00 am - 1:40 am

AEP

IAD

20h 40m

2 stops

$738Avianca

Wed, Dec 2 - Sun, Dec 20

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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

Jul 21

BWI6:39 pmBaltimore/Washington

13h 11m

1 stop

EZE8:50 amBuenos Aires Ministro Pistarini

Jul 30

EZE9:15 amBuenos Aires Ministro Pistarini

15h 37m

1 stop

BWI11:52 pmBaltimore/Washington

$679

American Airlines

Jul 1

BWI6:01 amBaltimore/Washington

13h 14m

1 stop

EZE8:15 pmBuenos Aires Ministro Pistarini

Jul 5

EZE10:35 pmBuenos Aires Ministro Pistarini

15h 28m

2 stops

BWI1:03 pmBaltimore/Washington

$682

American Airlines

Jul 21

IAD1:08 pmWashington, D.C. Dulles Intl

16h 52m

2 stops

EZE7:00 amBuenos Aires Ministro Pistarini

Jul 30

EZE9:15 amBuenos Aires Ministro Pistarini

15h 55m

2 stops

IAD12:10 amWashington, D.C. Dulles Intl

$683

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

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

LATAM Airlines

Oct 7

DCA2:55 pmWashington, D.C. Reagan-National

17h 45m

1 stop

EZE9:40 amBuenos Aires Ministro Pistarini

Oct 14

EZE1:10 pmBuenos Aires Ministro Pistarini

22h 44m

2 stops

DCA10:54 amWashington, D.C. Reagan-National

$659

LATAM Airlines

Oct 6

IAD4:00 pmWashington, D.C. Dulles Intl

16h 40m

2 stops

EZE9:40 amBuenos Aires Ministro Pistarini

Oct 23

EZE7:35 amBuenos Aires Ministro Pistarini

17h 45m

2 stops

IAD12:20 amWashington, D.C. Dulles Intl

$672

LATAM Airlines

Jul 2

BWI2:10 pmBaltimore/Washington

18h 35m

1 stop

EZE9:45 amBuenos Aires Ministro Pistarini

Jul 10

EZE8:10 pmBuenos Aires Ministro Pistarini

17h 57m

1 stop

BWI1:07 pmBaltimore/Washington

$675

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

Tue 6/30

6:25 am-2:30 am

1 stop19h 05m

Buenos Aires Ministro Pistarini

Mon 7/6

12:10 am-4:21 am

1 stop29h 11m

$655

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Sun 7/5

6:01 pm-9:45 am

1 stop14h 44m

Buenos Aires Ministro Pistarini

Sat 8/1

1:10 pm-2:34 pm

2 stops26h 24m

$659

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

Wed 7/1

7:15 am-8:00 am

2 stops23h 45m

Buenos Aires Ministro Pistarini

Tue 7/7

9:00 pm-6:31 pm

1 stop22h 31m

$667

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Fri 7/17

5:46 pm-9:45 am

1 stop14h 59m

Buenos Aires Ministro Pistarini

Mon 7/27

8:10 pm-4:46 pm

1 stop21h 36m

$667

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Wed 7/1

5:07 pm-9:45 am

1 stop15h 38m

Buenos Aires Ministro Pistarini

Tue 7/7

8:10 pm-9:24 am

1 stop14h 14m

$667

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Tue 7/21

10:20 pm-8:00 am

1 stop32h 40m

Buenos Aires Ministro Pistarini

Wed 7/29

9:00 pm-11:28 am

1 stop15h 28m

$676

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Tue 7/21

6:39 pm-8:50 am

1 stop13h 11m

Buenos Aires Ministro Pistarini

Thu 7/30

9:15 am-11:52 pm

1 stop15h 37m

$679

Quickest round-trip

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Wed 7/1

6:01 am-8:15 pm

1 stop13h 14m

Buenos Aires Ministro Pistarini

Sun 7/5

10:35 pm-1:03 pm

2 stops15h 28m

$682

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Wed 12/2

5:45 am-5:40 am

1 stop21h 55m

Buenos Aires Jorge Newbery

Sun 12/20

7:00 am-1:40 am

2 stops20h 40m

$729

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Wed 12/2

5:45 am-5:40 am

1 stop21h 55m

Buenos Aires Jorge Newbery

Sun 12/20

7:00 am-1:40 am

2 stops20h 40m

$738

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 April. Flight prices, which tend to average around $229, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of April, then book flights to Buenos Aires from Washington, D.C. during January instead. Flights to Buenos Aires in January, while not as cheap as those in April, still average around $256.

How far in advance should I book a flight from Washington, D.C. 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 $781 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 $595 on momondo.

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

You could potentially save up to 12% 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 June 2026, prices for Washington, D.C. to Buenos Aires flights are approximately 34% 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 37m
Direct flights	None

The fastest flight from Washington, D.C. to Buenos Aires takes 12h 37m

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

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

How far is Washington, D.C. to Buenos Aires by plane?
Buenos Aires is 5214.3 mi away from Washington, D.C.. 12h 37m 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 June 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 18% of the total bookings. Other popular airlines include Delta with 18%, American Airlines with 18%, and Copa Airlines with 18%.

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 7.8 8,414 reviews	Search Delta flights
LATAM Airlines	PriceFrom $278	Free Cancellation	Rating 7.4 1,933 reviews	Search LATAM Airlines flights
Copa Airlines	PriceFrom $336	Free Cancellation	Rating 7.6 1,567 reviews	Search Copa Airlines flights
Avianca	PriceFrom $536	Free Cancellation	Rating 6.5 2,533 reviews	Search Avianca flights
American Airlines	PriceFrom $599	Free Cancellation	Rating 7.1 11,697 reviews	Search American Airlines flights
United Airlines	PriceFrom $620	Free Cancellation	Rating 7.4 9,861 reviews	Search United Airlines flights

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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.

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Cheap flights from Washington, D.C. to Buenos Aires from $298

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 6/23. 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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American Airlines flights from Washington, D.C. to Buenos Aires

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

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

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

momondo Fare Finder

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 from Washington, D.C. 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

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

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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