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

Avianca, LATAM Airlines, and Delta 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 33m.

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 48m 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 04m.

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

Panama City (PTY) was the most common stop: 41% of momondo users choosing 1-stop flights on this route connected there.

What airlines fly to Buenos Aires?

Copa Airlines, Delta and American 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 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 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 April 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.

$250 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 $1,026 to $637. The lowest price recently found on this route was $580.

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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 - 12:25 am

IAD

EZE

16h 35m

1 stop

4:50 pm - 5:20 am

EZE

IAD

13h 30m

1 stop

$580Avianca

mån, apr 27 - mån, maj 11

6:50 am - 12:25 am

IAD

EZE

16h 35m

1 stop

4:50 pm - 5:20 am

EZE

IAD

13h 30m

1 stop

$582Avianca

tors, apr 30 - tors, maj 21

4:40 pm - 10:25 pm

BWI

EZE

28h 45m

1 stop

2:17 am - 3:20 pm

EZE

BWI

14h 03m

1 stop

$623Copa Airlines

mån, maj 25 - sön, maj 31

2:45 pm - 9:20 am

DCA

EZE

17h 35m

1 stop

10:40 pm - 2:05 pm

EZE

DCA

16h 25m

1 stop

$653LATAM Airlines

fre, jun 19 - mån, jul 6

4:00 pm - 9:20 am

DCA

EZE

16h 20m

2 stops

10:40 pm - 2:05 pm

EZE

DCA

16h 25m

1 stop

$658LATAM Airlines

fre, jun 19 - mån, jul 6

4:00 pm - 9:45 am

DCA

EZE

16h 45m

1 stop

8:10 pm - 9:09 am

EZE

DCA

13h 59m

1 stop

$679Multiple Airlines

mån, apr 27 - fre, maj 1

4:40 pm - 7:55 am

BWI

EZE

14h 15m

1 stop

12:10 am - 3:20 pm

EZE

BWI

16h 10m

1 stop

$709Copa Airlines

ons, maj 27 - tis, jun 2

7:41 pm - 9:45 am

BWI

EZE

13h 04m

1 stop

8:10 pm - 10:44 am

EZE

BWI

15h 34m

1 stop

$721Delta

sön, maj 17 - lör, maj 23

8:50 am - 2:50 pm

DCA

AEP

29h 00m

3 stops

3:45 pm - 5:56 pm

AEP

DCA

27h 11m

3 stops

$782Multiple Airlines

sön, jul 5 - sön, jul 12

7:29 pm - 4:00 pm

BWI

AEP

19h 31m

2 stops

8:05 pm - 1:06 pm

AEP

BWI

18h 01m

2 stops

$909Delta

tors, aug 6 - tis, aug 18

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

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

Avianca

Apr 27

IAD6:50 amWashington, D.C. Dulles Intl

16h 35m

1 stop

EZE12:25 amBuenos Aires Ministro Pistarini

May 11

EZE4:50 pmBuenos Aires Ministro Pistarini

13h 30m

1 stop

IAD5:20 amWashington, D.C. Dulles Intl

$580

Avianca

Apr 30

IAD6:50 amWashington, D.C. Dulles Intl

16h 35m

1 stop

EZE12:25 amBuenos Aires Ministro Pistarini

May 21

EZE4:50 pmBuenos Aires Ministro Pistarini

13h 30m

1 stop

IAD5:20 amWashington, D.C. Dulles Intl

$582

Avianca

Apr 30

IAD6:50 amWashington, D.C. Dulles Intl

21h 50m

1 stop

EZE5:40 amBuenos Aires Ministro Pistarini

May 21

EZE4:50 pmBuenos Aires Ministro Pistarini

13h 30m

1 stop

IAD5:20 amWashington, D.C. Dulles Intl

$583

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

Jun 19

DCA2:45 pmWashington, D.C. Reagan-National

17h 35m

1 stop

EZE9:20 amBuenos Aires Ministro Pistarini

Jul 6

EZE10:40 pmBuenos Aires Ministro Pistarini

16h 25m

1 stop

DCA2:05 pmWashington, D.C. Reagan-National

$653

LATAM Airlines

Jun 19

DCA4:00 pmWashington, D.C. Reagan-National

16h 20m

2 stops

EZE9:20 amBuenos Aires Ministro Pistarini

Jul 6

EZE10:40 pmBuenos Aires Ministro Pistarini

16h 25m

1 stop

DCA2:05 pmWashington, D.C. Reagan-National

$658

LATAM Airlines

Jun 11

DCA2:45 pmWashington, D.C. Reagan-National

17h 35m

1 stop

EZE9:20 amBuenos Aires Ministro Pistarini

Jun 15

EZE10:40 pmBuenos Aires Ministro Pistarini

16h 25m

1 stop

DCA2:05 pmWashington, D.C. Reagan-National

$666

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

mån 4/27

6:50 am-12:25 am

1 stop16h 35m

Buenos Aires Ministro Pistarini

mån 5/11

4:50 pm-5:20 am

1 stop13h 30m

$580

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

tors 4/30

6:50 am-12:25 am

1 stop16h 35m

Buenos Aires Ministro Pistarini

tors 5/21

4:50 pm-5:20 am

1 stop13h 30m

$582

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

mån 5/25

4:40 pm-10:25 pm

1 stop28h 45m

Buenos Aires Ministro Pistarini

sön 5/31

2:17 am-3:20 pm

1 stop14h 03m

$623

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

fre 6/19

2:45 pm-9:20 am

1 stop17h 35m

Buenos Aires Ministro Pistarini

mån 7/6

10:40 pm-2:05 pm

1 stop16h 25m

$653

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

fre 6/19

4:00 pm-9:20 am

2 stops16h 20m

Buenos Aires Ministro Pistarini

mån 7/6

10:40 pm-2:05 pm

1 stop16h 25m

$658

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

mån 4/27

4:00 pm-9:45 am

1 stop16h 45m

Buenos Aires Ministro Pistarini

fre 5/1

8:10 pm-9:09 am

1 stop13h 59m

$679

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

ons 5/27

4:40 pm-7:55 am

1 stop14h 15m

Buenos Aires Ministro Pistarini

tis 6/2

12:10 am-3:20 pm

1 stop16h 10m

$709

Quickest round-trip

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

sön 5/17

7:41 pm-9:45 am

1 stop13h 04m

Buenos Aires Ministro Pistarini

lör 5/23

8:10 pm-10:44 am

1 stop15h 34m

$721

Washington, D.C.Buenos Aires

DCA - AEP

DCAAEP

Washington, D.C. Reagan-National

sön 7/5

8:50 am-2:50 pm

3 stops29h 00m

Buenos Aires Jorge Newbery

sön 7/12

3:45 pm-5:56 pm

3 stops27h 11m

$782

BaltimoreBuenos Aires

BWI - AEP

BWIAEP

Baltimore/Washington

tors 8/6

7:29 pm-4:00 pm

2 stops19h 31m

Buenos Aires Jorge Newbery

tis 8/18

8:05 pm-1:06 pm

2 stops18h 01m

$909

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 $640, 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 $772 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 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 April 2026, prices for Washington, D.C. to Buenos Aires flights are approximately 36% 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 32m
Direct flights	None

The fastest flight from Washington, D.C. to Buenos Aires takes 12h 32m

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 32m 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 April 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 18%, Copa Airlines with 18%, 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 8,406 reviews	Search Delta flights
LATAM Airlines	PriceFrom $278	Free Cancellation	Rating 7.4 1,910 reviews	Search LATAM Airlines flights
United Airlines	PriceFrom $344	Free Cancellation	Rating 7.4 9,571 reviews	Search United Airlines flights
Copa Airlines	PriceFrom $355	Free Cancellation	Rating 7.5 1,574 reviews	Search Copa Airlines flights
Avianca	PriceFrom $536	Free Cancellation	Rating 6.5 2,504 reviews	Search Avianca flights
American Airlines	PriceFrom $599	Free Cancellation	Rating 7.1 11,571 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 $250

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 9/16. 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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Avianca flights from Washington, D.C. to Buenos Aires

Our best Avianca 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

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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

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

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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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