Which layover airport offers the lowest fares from Washington, D.C. Dulles Intl Airport to Buenos Aires?

Flights via Bogotá (BOG) offer the lowest average round-trip price of $665.

What airlines fly to Buenos Aires?

Copa Airlines, Avianca and Delta are the top three most popular airlines that fly to Buenos Aires from Washington, D.C. Dulles Intl Airport according to our data. Copa Airlines is the first choice among our users, with 44% of people opting to fly with this airline when traveling to Buenos Aires. Keep in mind that there are 5 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. Dulles Intl Airport to Buenos Aires?

Flights connecting via Panama City (PTY) have the shortest average one-way travel time: 14h 17m.

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

Panama City (PTY) has the shortest average layover time for this route: 2h 15m.

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

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

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

Panama City (PTY) was the most common stop: 55% of momondo users choosing 1-stop flights on this route connected there.

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

The number of operators available for flights from Washington, D.C. Dulles Intl Airport to Buenos Aires is 5 as of July 2026.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Buenos Aires.

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

The necessary travel and health documents for your Buenos Aires trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$280 Cheap Flights from Washington, D.C. Dulles Intl Airport to Buenos Aires in 2026

Discover deals from 900+ travel sites with momondo.

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

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:26 pm - 9:45 am

IAD

EZE

13h 19m

1 stop

8:10 pm - 12:41 am

EZE

IAD

29h 31m

1 stop

$660Delta

Thu, Jul 16 - Wed, Jul 29

1:16 am - 5:53 am

IAD

EZE

26h 37m

1 stop

2:33 pm - 3:15 am

EZE

IAD

14h 42m

1 stop

$666Copa Airlines

Mon, Nov 2 - Tue, Nov 17

8:40 am - 8:00 am

IAD

EZE

22h 20m

1 stop

9:00 pm - 11:28 am

EZE

IAD

15h 28m

1 stop

$667United Airlines

Sun, Jul 12 - Thu, Jul 30

7:26 pm - 6:50 pm

IAD

EZE

22h 24m

2 stops

1:10 pm - 2:01 pm

EZE

IAD

25h 51m

2 stops

$671Delta

Mon, Jul 13 - Mon, Jul 27

8:40 am - 8:00 am

IAD

EZE

22h 20m

1 stop

9:00 pm - 10:43 pm

EZE

IAD

26h 43m

1 stop

$676United Airlines

Sun, Jul 12 - Mon, Jul 27

4:34 pm - 7:57 am

IAD

EZE

14h 23m

1 stop

7:30 am - 2:40 am

EZE

IAD

20h 10m

2 stops

$684Multiple Airlines

Wed, Oct 14 - Wed, Oct 28

4:34 pm - 7:57 am

IAD

EZE

14h 23m

1 stop

4:50 pm - 5:20 am

EZE

IAD

13h 30m

1 stop

$687Multiple Airlines

Mon, Sep 28 - Thu, Oct 15

2:25 am - 3:15 am

IAD

EZE

23h 50m

1 stop

8:59 am - 12:32 am

EZE

IAD

16h 33m

1 stop

$694Copa Airlines

Wed, Oct 7 - Wed, Oct 14

5:45 am - 5:40 am

IAD

AEP

21h 55m

1 stop

7:00 am - 1:40 am

AEP

IAD

20h 40m

2 stops

$733Avianca

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

$734Avianca

Wed, Dec 2 - Sun, Dec 20

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United Airlines flights from Washington, D.C. Dulles Intl Airport to Buenos Aires

Our best United Airlines deals on Washington, D.C. Dulles Intl Airport to Buenos Aires flight tickets

United Airlines

Jul 12

IAD8:40 amWashington, D.C. Dulles Intl

22h 20m

1 stop

EZE8:00 amBuenos Aires Ministro Pistarini

Jul 30

EZE9:00 pmBuenos Aires Ministro Pistarini

15h 28m

1 stop

IAD11:28 amWashington, D.C. Dulles Intl

$667

United Airlines

Jul 12

IAD8:40 amWashington, D.C. Dulles Intl

22h 20m

1 stop

EZE8:00 amBuenos Aires Ministro Pistarini

Jul 27

EZE9:00 pmBuenos Aires Ministro Pistarini

26h 43m

1 stop

IAD10:43 pmWashington, D.C. Dulles Intl

$676

United Airlines

Jul 11

IAD10:20 pmWashington, D.C. Dulles Intl

32h 40m

1 stop

EZE8:00 amBuenos Aires Ministro Pistarini

Jul 27

EZE9:00 pmBuenos Aires Ministro Pistarini

26h 43m

1 stop

IAD10:43 pmWashington, D.C. Dulles Intl

$685

Delta flights from Washington, D.C. Dulles Intl Airport to Buenos Aires

Our best Delta deals on Washington, D.C. Dulles Intl Airport to Buenos Aires flight tickets

Delta

Jul 16

IAD7:26 pmWashington, D.C. Dulles Intl

13h 19m

1 stop

EZE9:45 amBuenos Aires Ministro Pistarini

Jul 29

EZE8:10 pmBuenos Aires Ministro Pistarini

29h 31m

1 stop

IAD12:41 amWashington, D.C. Dulles Intl

$660

Delta

Jul 13

IAD7:26 pmWashington, D.C. Dulles Intl

22h 24m

2 stops

EZE6:50 pmBuenos Aires Ministro Pistarini

Jul 29

EZE1:10 pmBuenos Aires Ministro Pistarini

25h 51m

2 stops

IAD2:01 pmWashington, D.C. Dulles Intl

$671

Delta

Sep 10

IAD3:15 pmWashington, D.C. Dulles Intl

17h 30m

1 stop

EZE9:45 amBuenos Aires Ministro Pistarini

Sep 22

EZE7:35 amBuenos Aires Ministro Pistarini

35h 11m

2 stops

IAD5:46 pmWashington, D.C. Dulles Intl

$722

momondo Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport 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

Thu 7/16

7:26 pm-9:45 am

1 stop13h 19m

Buenos Aires Ministro Pistarini

Wed 7/29

8:10 pm-12:41 am

1 stop29h 31m

$660

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Mon 11/2

1:16 am-5:53 am

1 stop26h 37m

Buenos Aires Ministro Pistarini

Tue 11/17

2:33 pm-3:15 am

1 stop14h 42m

$666

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Sun 7/12

8:40 am-8:00 am

1 stop22h 20m

Buenos Aires Ministro Pistarini

Thu 7/30

9:00 pm-11:28 am

1 stop15h 28m

$667

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Mon 7/13

7:26 pm-6:50 pm

2 stops22h 24m

Buenos Aires Ministro Pistarini

Mon 7/27

1:10 pm-2:01 pm

2 stops25h 51m

$671

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Sun 7/12

8:40 am-8:00 am

1 stop22h 20m

Buenos Aires Ministro Pistarini

Mon 7/27

9:00 pm-10:43 pm

1 stop26h 43m

$676

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Wed 10/14

4:34 pm-7:57 am

1 stop14h 23m

Buenos Aires Ministro Pistarini

Wed 10/28

7:30 am-2:40 am

2 stops20h 10m

$684

Quickest round-trip

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Mon 9/28

4:34 pm-7:57 am

1 stop14h 23m

Buenos Aires Ministro Pistarini

Thu 10/15

4:50 pm-5:20 am

1 stop13h 30m

$687

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Wed 10/7

2:25 am-3:15 am

1 stop23h 50m

Buenos Aires Ministro Pistarini

Wed 10/14

8:59 am-12:32 am

1 stop16h 33m

$694

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

$733

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

$734

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. Dulles Intl Airport 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

What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport 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. Dulles Intl Airport 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. Dulles Intl Airport to Buenos Aires?

You are more likely to see cheaper flights to Buenos Aires from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $780 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. Dulles Intl Airport for as low as $396 on momondo.

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

You could potentially save up to 10% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Buenos Aires flight.

How have Washington, D.C. Dulles Intl Airport to Buenos Aires flight prices changed over time?

As of July 2026, prices for Washington, D.C. Dulles Intl Airport to Buenos Aires flights are approximately 23% cheaper when compared to flights at the same time last year.

When to book flights from Washington, D.C. Dulles Intl Airport to Buenos Aires

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport to Buenos Aires (IAD to BUE) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Buenos Aires

Fastest flight time	12h 16m
Direct flights	None

The fastest flight from Washington, D.C. Dulles Intl Airport to Buenos Aires takes 12h 16m

There are no direct flights from Washington, D.C. Dulles Intl Airport to Buenos Aires. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Buenos Aires.

Search flight deals

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

How far is Washington, D.C. Dulles Intl to Buenos Aires by plane?
The straight-line distance from Washington, D.C. Dulles Intl to Buenos Aires is 5223.3 mi. Typically, this will take 12h 16m by plane in normal conditions.
When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Buenos Aires?
Prices for flights from Washington, D.C. Dulles Intl Airport to Buenos Aires are refreshed on a daily basis.
How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Buenos Aires?
The number of operators available for flights from Washington, D.C. Dulles Intl Airport to Buenos Aires is 5 as of July 2026.
How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Buenos Aires?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Buenos Aires.
What documentation or ID do you need to fly to Buenos Aires?
The necessary travel and health documents for your Buenos Aires trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Washington, D.C. Dulles Intl Airport to Buenos Aires?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Washington, D.C. Dulles Intl Airport to Buenos Aires is Avianca (38% of total bookings). The next most popular airlines are Copa Airlines (25%), Delta (21%), and United Airlines (10%).

Best airlines flying from Washington, D.C. Dulles Intl Airport to Buenos Aires

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Buenos Aires with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $265	Free Cancellation	Rating 7.4 9,920 reviews	Search United Airlines flights
Delta	PriceFrom $274	Free Cancellation	Rating 7.8 8,452 reviews	Search Delta flights
Copa Airlines	PriceFrom $346	Free Cancellation	Rating 7.6 1,565 reviews	Search Copa Airlines flights
Avianca	PriceFrom $536	Free Cancellation	Rating 6.5 2,515 reviews	Search Avianca flights
LATAM Airlines	PriceFrom $635	Free Cancellation	Rating 7.4 1,946 reviews	Search LATAM Airlines flights

Why use momondo?

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

It is quick and easy to find Washington, D.C. to Buenos Aires flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Buenos Aires that suits you.

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

Flights from Washington, D.C. to Buenos Aires with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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 not ready to book a flight from Washington, D.C. to Buenos Aires now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Buenos Aires and let you know when they change.

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Cheap flights from Washington, D.C. Dulles Intl Airport to Buenos Aires from $280

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United Airlines flights from Washington, D.C. Dulles Intl Airport to Buenos Aires

Our best United Airlines deals on Washington, D.C. Dulles Intl Airport to Buenos Aires flight tickets

Delta flights from Washington, D.C. Dulles Intl Airport to Buenos Aires

Our best Delta deals on Washington, D.C. Dulles Intl Airport to Buenos Aires flight tickets

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How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Buenos Aires

What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport to Buenos Aires?

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

How have Washington, D.C. Dulles Intl Airport to Buenos Aires flight prices changed over time?

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

What airlines fly to Buenos Aires?

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

Which layover airport offers the lowest fares from Washington, D.C. Dulles Intl Airport to Buenos Aires?

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

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

When to book flights from Washington, D.C. Dulles Intl Airport to Buenos Aires

Cheap Washington, D.C. Dulles Intl Airport to Buenos Aires (IAD to BUE) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Buenos Aires

Fastest flight time

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

Best airlines flying from Washington, D.C. Dulles Intl Airport to Buenos Aires

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport 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.

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Airports listed have a maximum distance of 17.0 mi from Buenos Aires

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