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

Bogotá (BOG) has the shortest average layover time for this route: 1h 26m.

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

Panama City (PTY) was the most common stop: 27% of momondo users choosing 1-stop flights on this route connected there.

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: 13h 10m.

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 30% 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.

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

How long does it take to fly to Buenos Aires?

On average, it takes 12h 10m 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 14m.

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 July 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.

$246 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 $692 to $869. The lowest price recently found on this route was $666.

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.

6:35 pm - 9:45 am

BWI

EZE

14h 10m

1 stop

9:15 pm - 9:28 am

EZE

BWI

37h 13m

2 stops

$666Multiple Airlines

Mon, Sep 14 - Mon, Sep 21

4:41 pm - 7:57 am

BWI

EZE

14h 16m

1 stop

2:17 am - 3:15 pm

EZE

BWI

13h 58m

1 stop

$676Copa Airlines

Fri, Sep 11 - Fri, Sep 18

6:20 pm - 9:45 am

BWI

EZE

14h 25m

1 stop

1:10 pm - 1:05 pm

EZE

BWI

24h 55m

2 stops

$678Delta

Thu, Aug 13 - Wed, Aug 26

6:00 am - 9:20 am

BWI

EZE

25h 20m

1 stop

11:55 pm - 4:25 pm

EZE

BWI

18h 30m

1 stop

$688United Airlines

Sun, Nov 15 - Wed, Dec 2

2:18 pm - 9:45 am

BWI

EZE

18h 27m

1 stop

1:10 pm - 10:57 am

EZE

BWI

22h 47m

2 stops

$692Delta

Wed, Aug 19 - Sat, Aug 22

6:52 pm - 8:45 am

BWI

EZE

12h 53m

1 stop

10:30 pm - 9:53 pm

EZE

BWI

24h 23m

1 stop

$696American Airlines

Wed, Aug 19 - Mon, Aug 31

6:00 am - 9:20 am

BWI

EZE

25h 20m

1 stop

10:05 pm - 10:34 pm

EZE

BWI

26h 29m

1 stop

$697United Airlines

Tue, Nov 24 - Tue, Dec 1

1:23 pm - 8:45 am

IAD

EZE

18h 22m

2 stops

10:30 pm - 5:48 pm

EZE

IAD

20h 18m

2 stops

$725American Airlines

Thu, Aug 13 - Wed, Aug 26

6:50 am - 5:40 am

IAD

AEP

21h 50m

1 stop

7:00 am - 2:45 am

AEP

IAD

20h 45m

2 stops

$739Avianca

Thu, Oct 8 - Tue, Oct 13

3:35 pm - 5:40 am

IAD

AEP

13h 05m

1 stop

7:00 am - 2:45 am

AEP

IAD

20h 45m

2 stops

$741Avianca

Sun, Aug 30 - Sun, Sep 6

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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

Copa Airlines

Sep 11

BWI4:41 pmBaltimore/Washington

14h 16m

1 stop

EZE7:57 amBuenos Aires Ministro Pistarini

Sep 18

EZE2:17 amBuenos Aires Ministro Pistarini

13h 58m

1 stop

BWI3:15 pmBaltimore/Washington

$676

Copa Airlines

Sep 6

BWI4:41 pmBaltimore/Washington

32h 49m

1 stop

EZE2:30 amBuenos Aires Ministro Pistarini

Sep 18

EZE2:17 amBuenos Aires Ministro Pistarini

13h 58m

1 stop

BWI3:15 pmBaltimore/Washington

$686

Copa Airlines

Oct 9

BWI4:49 pmBaltimore/Washington

31h 02m

1 stop

EZE12:51 amBuenos Aires Ministro Pistarini

Oct 16

EZE12:10 amBuenos Aires Ministro Pistarini

16h 05m

1 stop

BWI3:15 pmBaltimore/Washington

$693

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

Aug 19

BWI6:52 pmBaltimore/Washington

12h 53m

1 stop

EZE8:45 amBuenos Aires Ministro Pistarini

Aug 31

EZE10:30 pmBuenos Aires Ministro Pistarini

24h 23m

1 stop

BWI9:53 pmBaltimore/Washington

$696

American Airlines

Aug 22

BWI6:35 pmBaltimore/Washington

13h 10m

1 stop

EZE8:45 amBuenos Aires Ministro Pistarini

Sep 5

EZE11:35 pmBuenos Aires Ministro Pistarini

19h 55m

1 stop

BWI6:30 pmBaltimore/Washington

$699

American Airlines

Aug 27

BWI6:35 pmBaltimore/Washington

13h 10m

1 stop

EZE8:45 amBuenos Aires Ministro Pistarini

Sep 6

EZE8:50 pmBuenos Aires Ministro Pistarini

13h 57m

1 stop

BWI9:47 amBaltimore/Washington

$700

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

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Mon 9/14

6:35 pm-9:45 am

1 stop14h 10m

Buenos Aires Ministro Pistarini

Mon 9/21

9:15 pm-9:28 am

2 stops37h 13m

$666

Quickest round-trip

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Fri 9/11

4:41 pm-7:57 am

1 stop14h 16m

Buenos Aires Ministro Pistarini

Fri 9/18

2:17 am-3:15 pm

1 stop13h 58m

$676

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Thu 8/13

6:20 pm-9:45 am

1 stop14h 25m

Buenos Aires Ministro Pistarini

Wed 8/26

1:10 pm-1:05 pm

2 stops24h 55m

$678

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Sun 11/15

6:00 am-9:20 am

1 stop25h 20m

Buenos Aires Ministro Pistarini

Wed 12/2

11:55 pm-4:25 pm

1 stop18h 30m

$688

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Wed 8/19

2:18 pm-9:45 am

1 stop18h 27m

Buenos Aires Ministro Pistarini

Sat 8/22

1:10 pm-10:57 am

2 stops22h 47m

$692

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Wed 8/19

6:52 pm-8:45 am

1 stop12h 53m

Buenos Aires Ministro Pistarini

Mon 8/31

10:30 pm-9:53 pm

1 stop24h 23m

$696

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Tue 11/24

6:00 am-9:20 am

1 stop25h 20m

Buenos Aires Ministro Pistarini

Tue 12/1

10:05 pm-10:34 pm

1 stop26h 29m

$697

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Thu 8/13

1:23 pm-8:45 am

2 stops18h 22m

Buenos Aires Ministro Pistarini

Wed 8/26

10:30 pm-5:48 pm

2 stops20h 18m

$725

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Thu 10/8

6:50 am-5:40 am

1 stop21h 50m

Buenos Aires Jorge Newbery

Tue 10/13

7:00 am-2:45 am

2 stops20h 45m

$739

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Sun 8/30

3:35 pm-5:40 am

1 stop13h 05m

Buenos Aires Jorge Newbery

Sun 9/6

7:00 am-2:45 am

2 stops20h 45m

$741

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 $785 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 $400 on momondo.

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

You could potentially save up to 8% 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 July 2026, prices for Washington, D.C. to Buenos Aires flights are approximately 30% 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 10m
Direct flights	None

The fastest flight from Washington, D.C. to Buenos Aires takes 12h 10m

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 10m 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 July 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 Copa Airlines, making up 18% of the total bookings. Other popular airlines include Delta with 18%, United Airlines with 18%, and American 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
United Airlines	PriceFrom $265	Free Cancellation	Rating 7.4 9,993 reviews	Search United Airlines flights
Delta	PriceFrom $274	Free Cancellation	Rating 7.8 8,471 reviews	Search Delta flights
LATAM Airlines	PriceFrom $278	Free Cancellation	Rating 7.4 1,956 reviews	Search LATAM Airlines flights
Copa Airlines	PriceFrom $336	Free Cancellation	Rating 7.6 1,562 reviews	Search Copa Airlines flights
Avianca	PriceFrom $536	Free Cancellation	Rating 6.5 2,523 reviews	Search Avianca flights
American Airlines	PriceFrom $599	Free Cancellation	Rating 7.1 11,811 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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Fly into one of these airports located in Buenos Aires

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Cheap flights from Washington, D.C. to Buenos Aires from $246

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 9/7. 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

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

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

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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