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

Panama City (PTY) was the most common stop: 45% of momondo users choosing 1-stop flights on this route connected there.

What airlines fly to Buenos Aires?

Copa Airlines, Delta and United 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 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 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 12h 59m 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 02m.

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.

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

United Airlines, Copa Airlines, and American 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 February 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

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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 - 5:20 am

EZE

IAD

13h 30m

1 stop

$606Avianca

Tue, Apr 21 - Tue, May 5

6:50 am - 5:40 am

IAD

EZE

21h 50m

1 stop

4:50 pm - 5:20 am

EZE

IAD

13h 30m

1 stop

$607Avianca

Thu, Apr 2 - Thu, Apr 16

4:10 am - 12:25 am

IAD

EZE

19h 15m

2 stops

4:50 pm - 5:20 am

EZE

IAD

13h 30m

1 stop

$608Avianca

Tue, Apr 28 - Tue, May 5

9:32 am - 12:50 am

IAD

EZE

14h 18m

1 stop

2:57 pm - 4:22 am

EZE

IAD

14h 25m

1 stop

$609Copa Airlines

Mon, Apr 6 - Mon, Apr 13

4:46 pm - 7:51 am

BWI

EZE

14h 05m

1 stop

2:17 am - 3:20 pm

EZE

BWI

14h 03m

1 stop

$609Copa Airlines

Mon, Jun 1 - Thu, Jun 4

2:54 pm - 7:15 am

DCA

EZE

15h 21m

1 stop

10:20 pm - 12:40 pm

EZE

DCA

15h 20m

1 stop

$613American Airlines

Tue, Apr 7 - Tue, Apr 14

8:30 am - 8:20 am

IAD

EZE

22h 50m

1 stop

9:05 pm - 11:26 am

EZE

IAD

15h 21m

1 stop

$621United Airlines

Sun, Mar 8 - Thu, Mar 12

6:05 am - 8:20 am

BWI

EZE

25h 15m

1 stop

9:05 pm - 11:30 am

EZE

BWI

15h 25m

1 stop

$621United Airlines

Sun, Mar 8 - Wed, Mar 18

6:00 am - 8:20 am

IAD

EZE

25h 20m

1 stop

11:35 pm - 11:59 pm

EZE

IAD

25h 24m

2 stops

$625American Airlines

Mon, Mar 23 - Sun, May 3

12:10 pm - 8:35 am

DCA

EZE

19h 25m

2 stops

1:20 pm - 11:10 am

EZE

DCA

22h 50m

2 stops

$641Delta

Mon, Mar 30 - Mon, Apr 6

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

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

Avianca

Apr 21

IAD3:35 pmWashington, D.C. Dulles Intl

13h 05m

1 stop

EZE5:40 amBuenos Aires Ministro Pistarini

May 5

EZE4:50 pmBuenos Aires Ministro Pistarini

13h 30m

1 stop

IAD5:20 amWashington, D.C. Dulles Intl

$606

Avianca

Apr 2

IAD6:50 amWashington, D.C. Dulles Intl

21h 50m

1 stop

EZE5:40 amBuenos Aires Ministro Pistarini

Apr 16

EZE4:50 pmBuenos Aires Ministro Pistarini

13h 30m

1 stop

IAD5:20 amWashington, D.C. Dulles Intl

$607

Avianca

Apr 28

IAD4:10 amWashington, D.C. Dulles Intl

19h 15m

2 stops

EZE12:25 amBuenos Aires Ministro Pistarini

May 5

EZE4:50 pmBuenos Aires Ministro Pistarini

13h 30m

1 stop

IAD5:20 amWashington, D.C. Dulles Intl

$608

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

Jun 1

BWI4:46 pmBaltimore/Washington

14h 05m

1 stop

EZE7:51 amBuenos Aires Ministro Pistarini

Jun 4

EZE2:17 amBuenos Aires Ministro Pistarini

14h 03m

1 stop

BWI3:20 pmBaltimore/Washington

$609

Copa Airlines

Mar 9

BWI4:45 pmBaltimore/Washington

31h 17m

1 stop

EZE1:02 amBuenos Aires Ministro Pistarini

Mar 31

EZE2:52 pmBuenos Aires Ministro Pistarini

25h 25m

1 stop

BWI3:17 pmBaltimore/Washington

$622

Copa Airlines

Mar 16

BWI4:45 pmBaltimore/Washington

14h 10m

1 stop

EZE7:55 amBuenos Aires Ministro Pistarini

Mar 20

EZE9:16 amBuenos Aires Ministro Pistarini

30h 55m

1 stop

BWI3:11 pmBaltimore/Washington

$636

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

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Tue 4/21

6:50 am-5:40 am

1 stop21h 50m

Buenos Aires Ministro Pistarini

Tue 5/5

4:50 pm-5:20 am

1 stop13h 30m

$606

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Thu 4/2

6:50 am-5:40 am

1 stop21h 50m

Buenos Aires Ministro Pistarini

Thu 4/16

4:50 pm-5:20 am

1 stop13h 30m

$607

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Tue 4/28

4:10 am-12:25 am

2 stops19h 15m

Buenos Aires Ministro Pistarini

Tue 5/5

4:50 pm-5:20 am

1 stop13h 30m

$608

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Mon 4/6

9:32 am-12:50 am

1 stop14h 18m

Buenos Aires Ministro Pistarini

Mon 4/13

2:57 pm-4:22 am

1 stop14h 25m

$609

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Mon 6/1

4:46 pm-7:51 am

1 stop14h 05m

Buenos Aires Ministro Pistarini

Thu 6/4

2:17 am-3:20 pm

1 stop14h 03m

$609

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

Tue 4/7

2:54 pm-7:15 am

1 stop15h 21m

Buenos Aires Ministro Pistarini

Tue 4/14

10:20 pm-12:40 pm

1 stop15h 20m

$613

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Sun 3/8

8:30 am-8:20 am

1 stop22h 50m

Buenos Aires Ministro Pistarini

Thu 3/12

9:05 pm-11:26 am

1 stop15h 21m

$621

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Sun 3/8

6:05 am-8:20 am

1 stop25h 15m

Buenos Aires Ministro Pistarini

Wed 3/18

9:05 pm-11:30 am

1 stop15h 25m

$621

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Mon 3/23

6:00 am-8:20 am

1 stop25h 20m

Buenos Aires Ministro Pistarini

Sun 5/3

11:35 pm-11:59 pm

2 stops25h 24m

$625

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

Mon 3/30

12:10 pm-8:35 am

2 stops19h 25m

Buenos Aires Ministro Pistarini

Mon 4/6

1:20 pm-11:10 am

2 stops22h 50m

$641

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 $646, 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 $779 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 $619 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 February 2026, prices for Washington, D.C. to Buenos Aires flights are approximately 42% 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 59m
Direct flights	None

The fastest flight from Washington, D.C. to Buenos Aires takes 12h 59m

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 59m 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 February 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 19%, and American Airlines with 16%.

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 8,240 reviews	Search Delta flights
LATAM Airlines	PriceFrom $278	Free Cancellation	Rating 7.5 1,920 reviews	Search LATAM Airlines flights
Copa Airlines	PriceFrom $356	Free Cancellation	Rating 7.5 1,555 reviews	Search Copa Airlines flights
Avianca	PriceFrom $586	Free Cancellation	Rating 6.6 2,496 reviews	Search Avianca flights
American Airlines	PriceFrom $599	Free Cancellation	Rating 7.2 11,338 reviews	Search American Airlines flights
United Airlines	PriceFrom $615	Free Cancellation	Rating 7.4 9,341 reviews	Search United 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.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Tue 3/24

Tue 3/31

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Argentina

Nearby airports

Airlines

Cabin classes

Other Argentina destinations

Other flights from Washington, D.C.

Complete your trip

Feeling lucky

Fly into one of these airports located in Buenos Aires

Buenos Aires Jorge Newbery Airport

Buenos Aires Ministro Pistarini Airport

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 4/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

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

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

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

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

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

Our best Copa 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 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?

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

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.

Popular cities in Argentina

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Washington, D.C.

According to popular flight searches on momondo this year

Complete your trip to Buenos Aires

Explore popular destinations other users love

According to popular flight searches on momondo this year