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Cheap flights from Washington, D.C. Dulles Intl Airport to Buenos Aires from $247

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 5/4. 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
3:35 pm - 3:40 pm
IAD
-
EZE
23h 05m
1 stop
Avianca Logo
4:50 pm - 5:20 am
EZE
-
IAD
13h 30m
1 stop
$605Avianca
Sat, May 2 - Mon, May 11
Avianca Logo
3:35 pm - 5:40 am
IAD
-
EZE
13h 05m
1 stop
Avianca Logo
4:50 pm - 2:15 pm
EZE
-
IAD
22h 25m
1 stop
$606Avianca
Tue, Apr 14 - Tue, Apr 21
Copa Airlines Logo
2:21 am - 10:25 pm
IAD
-
EZE
19h 04m
1 stop
Copa Airlines Logo
2:57 pm - 4:22 am
EZE
-
IAD
14h 25m
1 stop
$608Copa Airlines
Wed, Apr 8 - Mon, Apr 27
Copa Airlines Logo
9:32 am - 2:30 am
IAD
-
EZE
15h 58m
1 stop
Copa Airlines Logo
2:57 pm - 4:22 am
EZE
-
IAD
14h 25m
1 stop
$609Copa Airlines
Mon, Apr 6 - Sat, Apr 18
Avianca Logo
6:50 am - 5:40 am
IAD
-
EZE
21h 50m
1 stop
Avianca Logo
4:50 pm - 5:20 am
EZE
-
IAD
13h 30m
1 stop
$611Avianca
Tue, Apr 7 - Mon, Apr 13
Avianca Logo
3:35 pm - 5:40 am
IAD
-
EZE
13h 05m
1 stop
Avianca Logo
4:50 pm - 5:20 am
EZE
-
IAD
13h 30m
1 stop
$612Avianca
Tue, May 5 - Tue, May 26
Avianca Logo
6:50 am - 12:25 am
IAD
-
EZE
16h 35m
1 stop
Avianca Logo
7:10 am - 2:45 am
EZE
-
IAD
20h 35m
2 stops
$613Avianca
Wed, May 27 - Wed, Jun 3
Avianca Logo
6:50 am - 12:25 am
IAD
-
EZE
16h 35m
1 stop
Avianca Logo
7:10 am - 2:45 am
EZE
-
IAD
20h 35m
2 stops
$615Avianca
Tue, May 5 - Tue, May 26
Avianca Logo
3:35 pm - 3:40 pm
IAD
-
EZE
23h 05m
1 stop
Avianca Logo
4:50 pm - 2:15 pm
EZE
-
IAD
22h 25m
1 stop
$616Avianca
Sat, May 9 - Sun, May 17
LATAM Airlines Logo
7:19 pm - 4:00 pm
IAD
-
AEP
19h 41m
2 stops
LATAM Airlines Logo
8:05 pm - 11:42 am
AEP
-
IAD
16h 37m
2 stops
$637LATAM Airlines
Tue, Apr 14 - Tue, Apr 21

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

Our best Avianca deals on Washington, D.C. Dulles Intl Airport to Buenos Aires flight tickets
Avianca
May 2
IAD3:35 pmWashington, D.C. Dulles Intl
23h 05m
1 stop
EZE3:40 pmBuenos Aires Ministro Pistarini
May 11
EZE4:50 pmBuenos Aires Ministro Pistarini
13h 30m
1 stop
IAD5:20 amWashington, D.C. Dulles Intl
$605
Avianca
Apr 14
IAD3:35 pmWashington, D.C. Dulles Intl
13h 05m
1 stop
EZE5:40 amBuenos Aires Ministro Pistarini
Apr 21
EZE4:50 pmBuenos Aires Ministro Pistarini
22h 25m
1 stop
IAD2:15 pmWashington, D.C. Dulles Intl
$606
Avianca
Apr 7
IAD6:50 amWashington, D.C. Dulles Intl
21h 50m
1 stop
EZE5:40 amBuenos Aires Ministro Pistarini
Apr 13
EZE4:50 pmBuenos Aires Ministro Pistarini
13h 30m
1 stop
IAD5:20 amWashington, D.C. Dulles Intl
$611

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
Apr 8
IAD2:21 amWashington, D.C. Dulles Intl
19h 04m
1 stop
EZE10:25 pmBuenos Aires Ministro Pistarini
Apr 27
EZE2:57 pmBuenos Aires Ministro Pistarini
14h 25m
1 stop
IAD4:22 amWashington, D.C. Dulles Intl
$608
Copa Airlines
Apr 6
IAD9:32 amWashington, D.C. Dulles Intl
15h 58m
1 stop
EZE2:30 amBuenos Aires Ministro Pistarini
Apr 18
EZE2:57 pmBuenos Aires Ministro Pistarini
14h 25m
1 stop
IAD4:22 amWashington, D.C. Dulles Intl
$609
Copa Airlines
Mar 16
IAD9:29 amWashington, D.C. Dulles Intl
14h 33m
1 stop
EZE1:02 amBuenos Aires Ministro Pistarini
Mar 23
EZE9:16 amBuenos Aires Ministro Pistarini
30h 44m
1 stop
IAD3:00 pmWashington, D.C. Dulles Intl
$622

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 March 4, 2026.
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 - EZE

IADEZE

Washington, D.C. Dulles Intl

Sat 5/2

3:35 pm-3:40 pm

1 stop23h 05m

Buenos Aires Ministro Pistarini

Mon 5/11

4:50 pm-5:20 am

1 stop13h 30m

$605

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Tue 4/14

3:35 pm-5:40 am

1 stop13h 05m

Buenos Aires Ministro Pistarini

Tue 4/21

4:50 pm-2:15 pm

1 stop22h 25m

$606

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Wed 4/8

2:21 am-10:25 pm

1 stop19h 04m

Buenos Aires Ministro Pistarini

Mon 4/27

2:57 pm-4:22 am

1 stop14h 25m

$608

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Mon 4/6

9:32 am-2:30 am

1 stop15h 58m

Buenos Aires Ministro Pistarini

Sat 4/18

2:57 pm-4:22 am

1 stop14h 25m

$609

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Tue 4/7

6:50 am-5:40 am

1 stop21h 50m

Buenos Aires Ministro Pistarini

Mon 4/13

4:50 pm-5:20 am

1 stop13h 30m

$611

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Tue 5/5

3:35 pm-5:40 am

1 stop13h 05m

Buenos Aires Ministro Pistarini

Tue 5/26

4:50 pm-5:20 am

1 stop13h 30m

$612

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Wed 5/27

6:50 am-12:25 am

1 stop16h 35m

Buenos Aires Ministro Pistarini

Wed 6/3

7:10 am-2:45 am

2 stops20h 35m

$613

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Tue 5/5

6:50 am-12:25 am

1 stop16h 35m

Buenos Aires Ministro Pistarini

Tue 5/26

7:10 am-2:45 am

2 stops20h 35m

$615

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Sat 5/9

3:35 pm-3:40 pm

1 stop23h 05m

Buenos Aires Ministro Pistarini

Sun 5/17

4:50 pm-2:15 pm

1 stop22h 25m

$616

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Tue 4/14

7:19 pm-4:00 pm

2 stops19h 41m

Buenos Aires Jorge Newbery

Tue 4/21

8:05 pm-11:42 am

2 stops16h 37m

$637

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest 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 $643.

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 $782 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 $619 on momondo.

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

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?

  • 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 $274Free CancellationRating
7.9
8,246 reviews
Search Delta flights
Copa AirlinesPriceFrom $355Free CancellationRating
7.5
1,557 reviews
Search Copa Airlines flights
AviancaPriceFrom $586Free CancellationRating
6.5
2,494 reviews
Search Avianca flights
United AirlinesPriceFrom $629Free CancellationRating
7.4
9,382 reviews
Search United Airlines flights
LATAM AirlinesPriceFrom $637Free CancellationRating
7.4
1,916 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