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

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 11/18. 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
5:45 am - 5:50 amIAD-EZE
22h 05m1 stop
Avianca Logo
4:55 pm - 2:55 pmEZE-IAD
24h 00m2 stops
$637Avianca
Find Deal
Sun, Nov 16 - Wed, Nov 26
Avianca Logo
4:15 pm - 3:50 pmIAD-EZE
21h 35m2 stops
Avianca Logo
7:30 am - 1:40 amEZE-IAD
20h 10m2 stops
$638Avianca
Find Deal
Tue, Dec 2 - Tue, Dec 9
United Airlines Logo
8:15 am - 9:20 amIAD-EZE
23h 05m1 stop
United Airlines Logo
10:05 pm - 8:41 pmEZE-IAD
24h 36m1 stop
$640United Airlines
Find Deal
Sun, Feb 8 - Sun, Feb 22
LATAM Airlines Logo
12:11 pm - 10:30 amIAD-AEP
20h 19m2 stops
LATAM Airlines Logo
3:40 pm - 11:31 amAEP-IAD
21h 51m2 stops
$640LATAM Airlines
Find Deal
Tue, Nov 18 - Sat, Nov 22
Delta Logo
7:21 pm - 7:20 amIAD-EZE
33h 59m1 stop
Delta Logo
10:25 pm - 7:19 pmEZE-IAD
22h 54m1 stop
$647Delta
Find Deal
Thu, Nov 20 - Tue, Dec 2
United Airlines Logo
5:45 pm - 9:20 amIAD-EZE
37h 35m1 stop
United Airlines Logo
10:05 pm - 11:21 amEZE-IAD
15h 16m1 stop
$648United Airlines
Find Deal
Sat, Feb 7 - Tue, Feb 24
Copa Airlines Logo
1:13 am - 1:00 amIAD-EZE
21h 47m1 stop
Copa Airlines Logo
2:34 pm - 3:22 amEZE-IAD
14h 48m1 stop
$663Copa Airlines
Find Deal
Sat, Nov 15 - Sun, Nov 23
Copa Airlines Logo
8:22 am - 7:59 amIAD-EZE
21h 37m1 stop
Copa Airlines Logo
12:07 am - 2:02 pmEZE-IAD
15h 55m1 stop
$668Copa Airlines
Find Deal
Sun, Dec 7 - Sun, Dec 14
LATAM Airlines Logo
12:11 pm - 8:55 pmIAD-EZE
30h 44m2 stops
LATAM Airlines Logo
7:43 pm - 11:31 amEZE-IAD
17h 48m2 stops
$670LATAM Airlines
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Thu, Nov 13 - Mon, Nov 24
Delta Logo
5:59 pm - 7:20 amIAD-EZE
35h 21m1 stop
Delta Logo
4:05 am - 12:24 amEZE-IAD
22h 19m2 stops
$704Delta
Find Deal
Sat, Feb 7 - Tue, Feb 24

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
Feb 8
IAD8:15 amWashington, D.C. Dulles Intl
23h 05m
1 stop
EZE9:20 amBuenos Aires Ministro Pistarini
Feb 22
EZE10:05 pmBuenos Aires Ministro Pistarini
24h 36m
1 stop
IAD8:41 pmWashington, D.C. Dulles Intl
$640
Find similar
United Airlines
Feb 7
IAD5:45 pmWashington, D.C. Dulles Intl
37h 35m
1 stop
EZE9:20 amBuenos Aires Ministro Pistarini
Feb 24
EZE10:05 pmBuenos Aires Ministro Pistarini
15h 16m
1 stop
IAD11:21 amWashington, D.C. Dulles Intl
$648
Find similar
United Airlines
Nov 20
IAD10:10 pmWashington, D.C. Dulles Intl
31h 10m
1 stop
EZE7:20 amBuenos Aires Ministro Pistarini
Dec 8
EZE10:05 pmBuenos Aires Ministro Pistarini
15h 18m
1 stop
IAD11:23 amWashington, D.C. Dulles Intl
$684
Find similar

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
Nov 20
IAD7:21 pmWashington, D.C. Dulles Intl
33h 59m
1 stop
EZE7:20 amBuenos Aires Ministro Pistarini
Dec 2
EZE10:25 pmBuenos Aires Ministro Pistarini
22h 54m
1 stop
IAD7:19 pmWashington, D.C. Dulles Intl
$647
Find similar
Delta
Nov 7
IAD12:27 pmWashington, D.C. Dulles Intl
18h 33m
1 stop
EZE9:00 amBuenos Aires Ministro Pistarini
Nov 10
EZE8:55 pmBuenos Aires Ministro Pistarini
14h 15m
1 stop
IAD9:10 amWashington, D.C. Dulles Intl
$697
Find similar
Delta
Feb 7
IAD5:59 pmWashington, D.C. Dulles Intl
35h 21m
1 stop
EZE7:20 amBuenos Aires Ministro Pistarini
Feb 24
EZE4:05 amBuenos Aires Ministro Pistarini
22h 19m
2 stops
IAD12:24 amWashington, D.C. Dulles Intl
$704
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 November 3, 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 - EZE

IADEZE

Washington, D.C. Dulles Intl

Sun 11/16

5:45 am-5:50 am

1 stop22h 05m

Buenos Aires Ministro Pistarini

Wed 11/26

4:55 pm-2:55 pm

2 stops24h 00m

$637

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Tue 12/2

4:15 pm-3:50 pm

2 stops21h 35m

Buenos Aires Ministro Pistarini

Tue 12/9

7:30 am-1:40 am

2 stops20h 10m

$638

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Sun 2/8

8:15 am-9:20 am

1 stop23h 05m

Buenos Aires Ministro Pistarini

Sun 2/22

10:05 pm-8:41 pm

1 stop24h 36m

$640

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Tue 11/18

12:11 pm-10:30 am

2 stops20h 19m

Buenos Aires Jorge Newbery

Sat 11/22

3:40 pm-11:31 am

2 stops21h 51m

$640

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Thu 11/20

7:21 pm-7:20 am

1 stop33h 59m

Buenos Aires Ministro Pistarini

Tue 12/2

10:25 pm-7:19 pm

1 stop22h 54m

$647

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Sat 2/7

5:45 pm-9:20 am

1 stop37h 35m

Buenos Aires Ministro Pistarini

Tue 2/24

10:05 pm-11:21 am

1 stop15h 16m

$648

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Sat 11/15

1:13 am-1:00 am

1 stop21h 47m

Buenos Aires Ministro Pistarini

Sun 11/23

2:34 pm-3:22 am

1 stop14h 48m

$663

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Sun 12/7

8:22 am-7:59 am

1 stop21h 37m

Buenos Aires Ministro Pistarini

Sun 12/14

12:07 am-2:02 pm

1 stop15h 55m

$668

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Thu 11/13

12:11 pm-8:55 pm

2 stops30h 44m

Buenos Aires Ministro Pistarini

Mon 11/24

7:43 pm-11:31 am

2 stops17h 48m

$670

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Sat 2/7

5:59 pm-7:20 am

1 stop35h 21m

Buenos Aires Ministro Pistarini

Tue 2/24

4:05 am-12:24 am

2 stops22h 19m

$704

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 September. Flight prices, which tend to average around $647, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, then book flights to Buenos Aires from Washington, D.C. Dulles Intl Airport during October instead. Flights to Buenos Aires in October, while not as cheap as those in September, 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 $877 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 $769 on momondo.

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

You could potentially save up to 5% 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

Direct flights

None
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.
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  • 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
AviancaPriceFrom $600Free CancellationRating
6.6
2,470 reviews
Search Avianca flights
Copa AirlinesPriceFrom $617Free CancellationRating
7.6
1,561 reviews
Search Copa Airlines flights
United AirlinesPriceFrom $629Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights
DeltaPriceFrom $629Free CancellationRating
7.9
8,002 reviews
Search Delta 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