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Cheap flights from Washington, D.C. Dulles Intl Airport to Buenos Aires from $272

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. Dulles Intl Airport to Buenos Aires departing on 4/10. 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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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Buenos Aires

Cheap round-trip flights

Enter your travel dates to find the best prices.
Avianca Logo
7:00 am - 5:40 am
IAD
-
AEP
21h 40m1 stop
Avianca Logo
7:00 am - 4:20 am
AEP
-
IAD
22h 20m2 stops
$607Avianca
Sun, May 10 - Fri, May 15
United Airlines Logo
5:45 pm - 7:20 am
IAD
-
EZE
35h 35m1 stop
United Airlines Logo
10:05 pm - 11:23 am
EZE
-
IAD
15h 18m1 stop
$608United Airlines
Mon, Feb 2 - Tue, Feb 10
Avianca Logo
5:45 am - 12:35 am
IAD
-
EZE
16h 50m1 stop
Avianca Logo
4:55 pm - 4:25 am
EZE
-
IAD
13h 30m1 stop
$610Avianca
Sun, Feb 1 - Sun, Mar 1
Avianca Logo
5:45 am - 12:10 am
IAD
-
EZE
17h 25m2 stops
Avianca Logo
1:40 am - 2:00 pm
EZE
-
IAD
13h 20m1 stop
$612Avianca
Sun, May 10 - Thu, May 14
Avianca Logo
4:15 pm - 3:50 pm
IAD
-
EZE
21h 35m2 stops
Avianca Logo
7:30 am - 2:40 am
EZE
-
IAD
20h 10m2 stops
$613Avianca
Wed, Mar 4 - Wed, Mar 11
Avianca Logo
5:45 am - 12:35 am
IAD
-
EZE
16h 50m1 stop
Avianca Logo
4:55 pm - 4:25 am
EZE
-
IAD
13h 30m1 stop
$614Avianca
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
8:15 am - 7:20 am
IAD
-
EZE
21h 05m1 stop
United Airlines Logo
11:55 pm - 10:16 pm
EZE
-
IAD
24h 21m1 stop
$618United Airlines
Thu, Feb 19 - Sun, Feb 22
Copa Airlines Logo
3:25 pm - 7:57 am
IAD
-
EZE
14h 32m1 stop
Copa Airlines Logo
2:48 pm - 3:13 am
EZE
-
IAD
14h 25m1 stop
$628Copa Airlines
Sun, Jan 11 - Tue, Jan 27
LATAM Airlines Logo
12:47 pm - 10:30 am
IAD
-
AEP
20h 43m2 stops
LATAM Airlines Logo
8:05 pm - 8:46 pm
AEP
-
IAD
25h 41m2 stops
$636LATAM Airlines
Fri, Apr 10 - Thu, Apr 23
LATAM Airlines Logo
12:23 pm - 10:30 am
IAD
-
AEP
20h 07m2 stops
LATAM Airlines Logo
8:25 pm - 11:43 am
AEP
-
IAD
17h 18m2 stops
$689LATAM Airlines
Sat, Jan 24 - Sun, Feb 8

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
IAD6:00 amWashington, D.C. Dulles Intl
24h 25m
1 stop
EZE8:25 amBuenos Aires Ministro Pistarini
Jan 26
EZE10:25 pmBuenos Aires Ministro Pistarini
24h 52m
1 stop
IAD9:17 pmWashington, D.C. Dulles Intl
$671
Find similar
American Airlines
Jan 12
IAD11:34 amWashington, D.C. Dulles Intl
20h 36m
2 stops
EZE10:10 amBuenos Aires Ministro Pistarini
Jan 26
EZE10:25 pmBuenos Aires Ministro Pistarini
20h 06m
1 stop
IAD4:31 pmWashington, D.C. Dulles Intl
$675
Find similar
American Airlines
Jan 8
IAD6:00 amWashington, D.C. Dulles Intl
24h 25m
1 stop
EZE8:25 amBuenos Aires Ministro Pistarini
Jan 16
EZE11:20 pmBuenos Aires Ministro Pistarini
26h 22m
2 stops
IAD11:42 pmWashington, D.C. Dulles Intl
$935
Find similar

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

Our best LATAM Airlines deals on Washington, D.C. Dulles Intl Airport to Buenos Aires flight tickets
LATAM Airlines
Apr 8
IAD1:19 pmWashington, D.C. Dulles Intl
22h 03m
2 stops
EZE12:22 pmBuenos Aires Ministro Pistarini
Apr 20
EZE7:35 amBuenos Aires Ministro Pistarini
17h 53m
2 stops
IAD12:28 amWashington, D.C. Dulles Intl
$636
Find similar
LATAM Airlines
Jan 31
IAD7:49 pmWashington, D.C. Dulles Intl
33h 31m
2 stops
EZE7:20 amBuenos Aires Ministro Pistarini
Mar 1
EZE8:55 pmBuenos Aires Ministro Pistarini
19h 50m
1 stop
IAD2:45 pmWashington, D.C. Dulles Intl
$640
Find similar
LATAM Airlines
Feb 18
IAD12:24 pmWashington, D.C. Dulles Intl
19h 51m
1 stop
EZE10:15 amBuenos Aires Ministro Pistarini
Feb 22
EZE8:55 pmBuenos Aires Ministro Pistarini
19h 50m
1 stop
IAD2:45 pmWashington, D.C. Dulles Intl
$641
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to Buenos Aires that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 30, 2025.
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

Sun 5/10

7:00 am-5:40 am

1 stop21h 40m

Buenos Aires Jorge Newbery

Fri 5/15

7:00 am-4:20 am

2 stops22h 20m

$607

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Mon 2/2

5:45 pm-7:20 am

1 stop35h 35m

Buenos Aires Ministro Pistarini

Tue 2/10

10:05 pm-11:23 am

1 stop15h 18m

$608

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Sun 2/1

5:45 am-12:35 am

1 stop16h 50m

Buenos Aires Ministro Pistarini

Sun 3/1

4:55 pm-4:25 am

1 stop13h 30m

$610

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Sun 5/10

5:45 am-12:10 am

2 stops17h 25m

Buenos Aires Ministro Pistarini

Thu 5/14

1:40 am-2:00 pm

1 stop13h 20m

$612

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Wed 3/4

4:15 pm-3:50 pm

2 stops21h 35m

Buenos Aires Ministro Pistarini

Wed 3/11

7:30 am-2:40 am

2 stops20h 10m

$613

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Wed 2/25

5:45 am-12:35 am

1 stop16h 50m

Buenos Aires Ministro Pistarini

Sun 3/1

4:55 pm-4:25 am

1 stop13h 30m

$614

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Thu 2/19

8:15 am-7:20 am

1 stop21h 05m

Buenos Aires Ministro Pistarini

Sun 2/22

11:55 pm-10:16 pm

1 stop24h 21m

$618

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Sun 1/11

3:25 pm-7:57 am

1 stop14h 32m

Buenos Aires Ministro Pistarini

Tue 1/27

2:48 pm-3:13 am

1 stop14h 25m

$628

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Fri 4/10

12:47 pm-10:30 am

2 stops20h 43m

Buenos Aires Jorge Newbery

Thu 4/23

8:05 pm-8:46 pm

2 stops25h 41m

$636

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Sat 1/24

12:23 pm-10:30 am

2 stops20h 07m

Buenos Aires Jorge Newbery

Sun 2/8

8:25 pm-11:43 am

2 stops17h 18m

$689

Flights are sorted by cheapest round-trip flights first.

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See travel insights to Buenos Aires from

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

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.

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 15m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Buenos Aires takes 13h 15m
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 15m 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?

  • 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?

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
DeltaPriceFrom $420Free CancellationRating
7.9
8,016 reviews
Search Delta flights
AviancaPriceFrom $600Free CancellationRating
6.6
2,491 reviews
Search Avianca flights
Copa AirlinesPriceFrom $617Free CancellationRating
7.6
1,565 reviews
Search Copa Airlines flights
United AirlinesPriceFrom $629Free CancellationRating
7.4
9,121 reviews
Search United Airlines flights
LATAM AirlinesPriceFrom $635Free CancellationRating
7.5
1,896 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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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
Buenos Aires Jorge Newbery Airport
Buenos Aires Ministro Pistarini Airport