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

Avianca, Delta, and American 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: 41% of momondo users choosing 1-stop flights on this route connected there.

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 42% 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 Atlanta (ATL) have the shortest average one-way travel time: 12h 57m.

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

Flights via Houston (IAH) offer the lowest average round-trip price of $629.

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

Houston (IAH) has the shortest average layover time for this route: 1h 56m.

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.

$275 Cheap Flights from Washington, D.C. Dulles Intl Airport to Buenos Aires in 2025/26

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. 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.

5:59 pm - 2:00 pm

IAD

AEP

18h 01m2 stops

2:55 pm - 9:13 am

AEP

IAD

20h 18m2 stops

$640LATAM Airlines

dom., ene. 18 - dom., ene. 25

7:50 pm - 9:45 am

IAD

EZE

12h 55m1 stop

8:10 pm - 12:01 pm

EZE

IAD

16h 51m1 stop

$640Delta

mié., may. 20 - mar., may. 26

12:35 pm - 9:40 am

IAD

AEP

19h 05m2 stops

3:40 pm - 12:39 pm

AEP

IAD

21h 59m2 stops

$641LATAM Airlines

jue., mar. 5 - mié., mar. 11

12:40 pm - 7:20 am

IAD

EZE

16h 40m1 stop

8:00 am - 12:24 am

EZE

IAD

18h 24m2 stops

$641LATAM Airlines

dom., feb. 1 - vie., feb. 6

6:00 am - 9:45 am

IAD

EZE

26h 45m1 stop

8:10 pm - 1:59 pm

EZE

IAD

18h 49m1 stop

$642Delta

dom., may. 17 - mié., may. 20

11:34 am - 9:10 am

IAD

EZE

19h 36m2 stops

11:20 pm - 4:31 pm

EZE

IAD

19h 11m2 stops

$644American Airlines

lun., ene. 12 - lun., ene. 26

4:15 pm - 12:35 am

IAD

EZE

30h 20m2 stops

4:55 pm - 3:55 pm

EZE

IAD

24h 00m2 stops

$645Avianca

sáb., mar. 7 - sáb., mar. 14

7:51 pm - 10:15 am

IAD

EZE

36h 24m1 stop

8:55 pm - 11:51 am

EZE

IAD

15h 56m1 stop

$646Delta

sáb., feb. 28 - lun., mar. 9

6:00 am - 9:45 am

IAD

EZE

26h 45m1 stop

7:45 am - 12:09 am

EZE

IAD

17h 24m2 stops

$647Delta

dom., may. 17 - mié., may. 27

2:35 pm - 5:50 am

IAD

EZE

13h 15m1 stop

4:55 pm - 4:25 am

EZE

IAD

13h 30m1 stop

$648Avianca

lun., ene. 5 - sáb., ene. 24

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

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

Copa Airlines

Mar 21

IAD2:18 amWashington, D.C. Dulles Intl

22h 39m

1 stop

EZE1:57 amBuenos Aires Ministro Pistarini

Mar 31

EZE2:52 pmBuenos Aires Ministro Pistarini

14h 21m

1 stop

IAD4:13 amWashington, D.C. Dulles Intl

$663

Find similar

Copa Airlines

Mar 24

IAD2:18 amWashington, D.C. Dulles Intl

19h 40m

1 stop

EZE10:58 pmBuenos Aires Ministro Pistarini

Apr 1

EZE2:57 pmBuenos Aires Ministro Pistarini

14h 25m

1 stop

IAD4:22 amWashington, D.C. Dulles Intl

$698

Find similar

Copa Airlines

Dec 15

IAD1:13 amWashington, D.C. Dulles Intl

22h 45m

1 stop

EZE1:58 amBuenos Aires Ministro Pistarini

Jan 21

EZE5:16 amBuenos Aires Ministro Pistarini

23h 57m

1 stop

IAD3:13 amWashington, D.C. Dulles Intl

$914

Find similar

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

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

American Airlines

Jan 12

IAD11:34 amWashington, D.C. Dulles Intl

19h 36m

2 stops

EZE9:10 amBuenos Aires Ministro Pistarini

Jan 26

EZE11:20 pmBuenos Aires Ministro Pistarini

19h 11m

2 stops

IAD4:31 pmWashington, D.C. Dulles Intl

$644

Find similar

American Airlines

Jan 12

IAD7:01 amWashington, D.C. Dulles Intl

22h 09m

2 stops

EZE7:10 amBuenos Aires Ministro Pistarini

Jan 26

EZE11:59 pmBuenos Aires Ministro Pistarini

25h 13m

2 stops

IAD11:12 pmWashington, D.C. Dulles Intl

$675

Find similar

American Airlines

Feb 5

IAD7:01 amWashington, D.C. Dulles Intl

24h 09m

2 stops

EZE9:10 amBuenos Aires Ministro Pistarini

Feb 21

EZE10:10 amBuenos Aires Ministro Pistarini

24h 33m

2 stops

IAD8:43 amWashington, D.C. Dulles Intl

$699

Find similar

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

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

dom. 1/18

5:59 pm-2:00 pm

2 stops18h 01m

Buenos Aires Jorge Newbery

dom. 1/25

2:55 pm-9:13 am

2 stops20h 18m

$640

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

mié. 5/20

7:50 pm-9:45 am

1 stop12h 55m

Buenos Aires Ministro Pistarini

mar. 5/26

8:10 pm-12:01 pm

1 stop16h 51m

$640

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

jue. 3/5

12:35 pm-9:40 am

2 stops19h 05m

Buenos Aires Jorge Newbery

mié. 3/11

3:40 pm-12:39 pm

2 stops21h 59m

$641

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

dom. 2/1

12:40 pm-7:20 am

1 stop16h 40m

Buenos Aires Ministro Pistarini

vie. 2/6

8:00 am-12:24 am

2 stops18h 24m

$641

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

dom. 5/17

6:00 am-9:45 am

1 stop26h 45m

Buenos Aires Ministro Pistarini

mié. 5/20

8:10 pm-1:59 pm

1 stop18h 49m

$642

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

lun. 1/12

11:34 am-9:10 am

2 stops19h 36m

Buenos Aires Ministro Pistarini

lun. 1/26

11:20 pm-4:31 pm

2 stops19h 11m

$644

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

sáb. 3/7

4:15 pm-12:35 am

2 stops30h 20m

Buenos Aires Ministro Pistarini

sáb. 3/14

4:55 pm-3:55 pm

2 stops24h 00m

$645

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

sáb. 2/28

7:51 pm-10:15 am

1 stop36h 24m

Buenos Aires Ministro Pistarini

lun. 3/9

8:55 pm-11:51 am

1 stop15h 56m

$646

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

dom. 5/17

6:00 am-9:45 am

1 stop26h 45m

Buenos Aires Ministro Pistarini

mié. 5/27

7:45 am-12:09 am

2 stops17h 24m

$647

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

lun. 1/5

2:35 pm-5:50 am

1 stop13h 15m

Buenos Aires Ministro Pistarini

sáb. 1/24

4:55 pm-4:25 am

1 stop13h 30m

$648

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 cheapest month to fly to Buenos Aires?

The cheapest month to fly to Buenos Aires from Washington, D.C. Dulles Intl Airport is in October. Flight prices, which tend to average around $639, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of October, then book flights to Buenos Aires from Washington, D.C. Dulles Intl Airport during September instead. Flights to Buenos Aires in September, while not as cheap as those in October, 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. Dulles Intl Airport 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. Dulles Intl Airport 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. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $832 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 $623 on momondo.

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

You could potentially save up to 6% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Buenos Aires flight.

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	13h 05m
Direct flights	None

The fastest flight from Washington, D.C. Dulles Intl Airport to Buenos Aires takes 13h 05m

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

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 13h 05m 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 December 2025.
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 (36% of total bookings). The next most popular airlines are Copa Airlines (30%), Delta (23%), and United Airlines (7%).

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
Delta	PriceFrom $514	Free Cancellation	Rating 7.9 8,005 reviews	Search Delta flights
Avianca	PriceFrom $600	Free Cancellation	Rating 6.6 2,479 reviews	Search Avianca flights
Copa Airlines	PriceFrom $617	Free Cancellation	Rating 7.6 1,558 reviews	Search Copa Airlines flights
United Airlines	PriceFrom $629	Free Cancellation	Rating 7.4 9,095 reviews	Search United Airlines flights
LATAM Airlines	PriceFrom $637	Free Cancellation	Rating 7.5 1,889 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.

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

sáb. 1/10

sáb. 1/17

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

Cheap flights from Washington, D.C. Dulles Intl Airport to Buenos Aires from $275

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. Dulles Intl Airport to Buenos Aires

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

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

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

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

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

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.

See travel insights to Buenos Aires from

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

You could potentially save up to 6% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Buenos Aires flight.

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

Avianca, Delta, and American Airlines are the most popular carriers operating 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?

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

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

Flights via Houston (IAH) offer the lowest average round-trip price of $629.

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

Houston (IAH) has the shortest average layover time for this route: 1h 56m.

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

Direct flights

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

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

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

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

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