What airlines fly to Buenos Aires?

Delta, Copa Airlines and United Airlines are the top three most popular airlines that fly to Buenos Aires from Washington, D.C. according to our data. Delta is the first choice among our users, with 34% 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 13h 03m 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 05m.

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: 46% of momondo users choosing 1-stop flights on this route connected there.

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 38m.

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

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

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.

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 December 2025.

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.

$255 Cheap Flights from Washington, D.C. to Buenos Aires in 2025/26

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 $816 to $1,662. The lowest price recently found on this route was $628.

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Cheap round-trip flights

Enter your travel dates to find the best prices.

4:45 pm - 7:55 amBWI-EZE

14h 10m1 stop

12:14 am - 3:17 pmEZE-BWI

16h 03m1 stop

$628Copa Airlines

Find Deal

Wed, Mar 11 - Tue, Mar 31

6:59 pm - 9:45 amBWI-EZE

13h 46m1 stop

8:10 pm - 11:09 amEZE-BWI

15h 59m1 stop

$638Delta

Find Deal

Tue, Apr 7 - Wed, Apr 22

5:25 pm - 9:45 amIAD-EZE

15h 20m1 stop

8:10 pm - 9:10 amEZE-IAD

14h 00m1 stop

$639LATAM Airlines

Find Deal

Mon, May 11 - Tue, May 19

8:15 am - 9:20 amIAD-EZE

23h 05m1 stop

10:05 pm - 11:21 amEZE-IAD

15h 16m1 stop

$640United Airlines

Find Deal

Sun, Feb 15 - Thu, Feb 26

12:37 pm - 7:20 amBWI-EZE

16h 43m1 stop

11:55 pm - 4:10 pmEZE-BWI

18h 15m1 stop

$640United Airlines

Find Deal

Mon, Feb 16 - Sun, Feb 22

7:00 am - 5:40 amIAD-AEP

21h 40m1 stop

7:00 am - 4:20 amAEP-IAD

22h 20m2 stops

$642Avianca

Find Deal

Fri, Apr 10 - Sun, Apr 26

5:45 am - 5:40 amIAD-AEP

22h 55m2 stops

7:00 am - 4:20 amAEP-IAD

22h 20m2 stops

$643Avianca

Find Deal

Thu, Apr 16 - Wed, Apr 22

2:18 am - 1:57 amIAD-EZE

22h 39m1 stop

2:57 pm - 4:22 amEZE-IAD

14h 25m1 stop

$643Copa Airlines

Find Deal

Wed, Mar 25 - Wed, Apr 15

12:50 pm - 8:25 amBWI-EZE

17h 35m2 stops

10:25 pm - 2:49 pmEZE-BWI

18h 24m1 stop

$644American Airlines

Find Deal

Sat, Jan 24 - Wed, Feb 4

7:15 am - 9:00 amBWI-EZE

23h 45m1 stop

8:55 pm - 9:23 amEZE-BWI

14h 28m1 stop

$646Delta

Find Deal

Tue, Feb 17 - Mon, Mar 2

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

Dec 11

BWI5:26 pmBaltimore/Washington

13h 44m

1 stop

EZE9:10 amBuenos Aires Ministro Pistarini

Dec 16

EZE11:59 pmBuenos Aires Ministro Pistarini

15h 49m

2 stops

BWI1:48 pmBaltimore/Washington

$604

Find similar

American Airlines

Jan 24

BWI12:50 pmBaltimore/Washington

17h 35m

2 stops

EZE8:25 amBuenos Aires Ministro Pistarini

Feb 4

EZE10:25 pmBuenos Aires Ministro Pistarini

18h 24m

1 stop

BWI2:49 pmBaltimore/Washington

$644

Find similar

American Airlines

Dec 4

BWI1:53 pmBaltimore/Washington

18h 47m

2 stops

EZE10:40 amBuenos Aires Ministro Pistarini

Dec 6

EZE11:59 pmBuenos Aires Ministro Pistarini

26h 30m

1 stop

BWI12:29 amBaltimore/Washington

$652

Find similar

Avianca flights from Washington, D.C. to Buenos Aires

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

Avianca

Apr 10

IAD7:00 amWashington, D.C. Dulles Intl

21h 40m

1 stop

AEP5:40 amBuenos Aires Jorge Newbery

Apr 26

AEP7:00 amBuenos Aires Jorge Newbery

22h 20m

2 stops

IAD4:20 amWashington, D.C. Dulles Intl

$642

Find similar

Avianca

Apr 16

IAD5:45 amWashington, D.C. Dulles Intl

22h 55m

2 stops

AEP5:40 amBuenos Aires Jorge Newbery

Apr 22

AEP7:00 amBuenos Aires Jorge Newbery

22h 20m

2 stops

IAD4:20 amWashington, D.C. Dulles Intl

$643

Find similar

Avianca

Feb 8

IAD5:45 amWashington, D.C. Dulles Intl

16h 50m

1 stop

EZE12:35 amBuenos Aires Ministro Pistarini

Feb 23

EZE4:55 pmBuenos Aires Ministro Pistarini

24h 00m

2 stops

IAD2:55 pmWashington, D.C. Dulles Intl

$646

Find similar

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

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Wed 3/11

4:45 pm-7:55 am

1 stop14h 10m

Buenos Aires Ministro Pistarini

Tue 3/31

12:14 am-3:17 pm

1 stop16h 03m

$628

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Tue 4/7

6:59 pm-9:45 am

1 stop13h 46m

Buenos Aires Ministro Pistarini

Wed 4/22

8:10 pm-11:09 am

1 stop15h 59m

$638

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Mon 5/11

5:25 pm-9:45 am

1 stop15h 20m

Buenos Aires Ministro Pistarini

Tue 5/19

8:10 pm-9:10 am

1 stop14h 00m

$639

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Sun 2/15

8:15 am-9:20 am

1 stop23h 05m

Buenos Aires Ministro Pistarini

Thu 2/26

10:05 pm-11:21 am

1 stop15h 16m

$640

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Mon 2/16

12:37 pm-7:20 am

1 stop16h 43m

Buenos Aires Ministro Pistarini

Sun 2/22

11:55 pm-4:10 pm

1 stop18h 15m

$640

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Fri 4/10

7:00 am-5:40 am

1 stop21h 40m

Buenos Aires Jorge Newbery

Sun 4/26

7:00 am-4:20 am

2 stops22h 20m

$642

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Thu 4/16

5:45 am-5:40 am

2 stops22h 55m

Buenos Aires Jorge Newbery

Wed 4/22

7:00 am-4:20 am

2 stops22h 20m

$643

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Wed 3/25

2:18 am-1:57 am

1 stop22h 39m

Buenos Aires Ministro Pistarini

Wed 4/15

2:57 pm-4:22 am

1 stop14h 25m

$643

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Sat 1/24

12:50 pm-8:25 am

2 stops17h 35m

Buenos Aires Ministro Pistarini

Wed 2/4

10:25 pm-2:49 pm

1 stop18h 24m

$644

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Tue 2/17

7:15 am-9:00 am

1 stop23h 45m

Buenos Aires Ministro Pistarini

Mon 3/2

8:55 pm-9:23 am

1 stop14h 28m

$646

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 $641, 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.

What is the cheapest day to depart on your flight to Buenos Aires?

On average, the least expensive day to fly to Buenos Aires from Washington, D.C. is on a Monday. momondo users have found tickets for Monday departures for as low as $1,031. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Buenos Aires on Saturday is $1,094.

What is the cheapest time of day to depart on your flight to Buenos Aires?

Our most recent data shows that the best time of day to fly to Buenos Aires is in the morning. Flights from Washington, D.C. to Buenos Aires during this time can be as low as $969. Try not to purchase tickets at noon because they tend to be around $1,107. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 $849 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 $722 on momondo.

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

You could potentially save up to 1% 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 December 2025, prices for Washington, D.C. to Buenos Aires flights are approximately 29% 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 01m
Direct flights	None

The fastest flight from Washington, D.C. to Buenos Aires takes 13h 01m

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 51m 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 December 2025.
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 Delta, making up 20% of the total bookings. Other popular airlines include Copa Airlines with 20%, United Airlines with 18%, and Avianca 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
LATAM Airlines	PriceFrom $506	Free Cancellation	Rating 7.5 1,889 reviews	Search LATAM Airlines flights
Avianca	PriceFrom $600	Free Cancellation	Rating 6.6 2,478 reviews	Search Avianca flights
Delta	PriceFrom $609	Free Cancellation	Rating 7.9 8,013 reviews	Search Delta flights
Copa Airlines	PriceFrom $617	Free Cancellation	Rating 7.6 1,559 reviews	Search Copa Airlines flights
United Airlines	PriceFrom $629	Free Cancellation	Rating 7.4 9,063 reviews	Search United Airlines flights
American Airlines	PriceFrom $639	Free Cancellation	Rating 7.2 11,045 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

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.

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Cheap flights from Washington, D.C. to Buenos Aires from $255

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 1/1. 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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Find the cheapest flights from Washington, D.C. to Buenos Aires

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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

Avianca flights from Washington, D.C. to Buenos Aires

Our best Avianca 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

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

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?

What is the cheapest day to depart on your flight to Buenos Aires?

What is the cheapest time of day to depart on your flight 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?

You could potentially save up to 1% 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 December 2025, prices for Washington, D.C. to Buenos Aires flights are approximately 29% cheaper when compared to flights at the same time last year.

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

American Airlines, Copa Airlines, and LATAM Airlines are the most popular carriers operating 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?

Panama City (PTY) was the most common stop: 46% of momondo users choosing 1-stop flights on this route connected there.

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

Atlanta (ATL) has the shortest average layover time for this route: 1h 38m.

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

How far is Washington, D.C. to Buenos Aires by plane?

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

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

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

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

What is the most popular airline 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?

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

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

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

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

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