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Cheap flights from Washington, D.C. Dulles Intl Airport to Buenos Aires from $315

1 adult
1 adult, Economy, 0 bags

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

Cheap round-trip flights

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LATAM Airlines Logo
10:05 am - 7:35 amIAD  Washington, D.C. Dulles Intl-EZE Buenos Aires Ministro Pistarini
19h 30m1 stop Atlanta Hartsfield-Jackson
LATAM Airlines Logo
12:50 pm - 10:01 amEZE  Buenos Aires Ministro Pistarini-IAD Washington, D.C. Dulles Intl
23h 11m2 stops Santiago Arturo Merino Benitez Atlanta Hartsfield-Jackson
$721LATAM Airlines
Thu, Jan 14 - Tue, Jan 19
LATAM Airlines Logo
7:00 am - 7:35 amIAD  Washington, D.C. Dulles Intl-EZE Buenos Aires Ministro Pistarini
22h 35m1 stop Atlanta Hartsfield-Jackson
LATAM Airlines Logo
4:00 am - 9:11 amEZE  Buenos Aires Ministro Pistarini-IAD Washington, D.C. Dulles Intl
30h 11m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson
$721LATAM Airlines
Sun, Jan 24 - Thu, Mar 25
Delta Logo
3:00 pm - 9:50 amIAD  Washington, D.C. Dulles Intl-EZE Buenos Aires Ministro Pistarini
16h 50m2 stops Atlanta Hartsfield-Jackson Miami
Delta Logo
11:35 pm - 5:40 pmEZE  Buenos Aires Ministro Pistarini-IAD Washington, D.C. Dulles Intl
20h 05m1 stop Atlanta Hartsfield-Jackson
$722Delta
Fri, Nov 13 - Thu, Nov 26
Delta Logo
10:11 am - 9:50 amIAD  Washington, D.C. Dulles Intl-EZE Buenos Aires Ministro Pistarini
21h 39m2 stops Atlanta Hartsfield-Jackson Miami
Delta Logo
12:20 pm - 2:01 pmEZE  Buenos Aires Ministro Pistarini-IAD Washington, D.C. Dulles Intl
27h 41m2 stops Miami Atlanta Hartsfield-Jackson
$722Delta
Wed, Nov 18 - Wed, Dec 2
American Airlines Logo
9:33 am - 7:20 amIAD  Washington, D.C. Dulles Intl-EZE Buenos Aires Ministro Pistarini
19h 47m2 stops Charlotte Douglas Miami
American Airlines Logo
8:45 pm - 5:11 pmEZE  Buenos Aires Ministro Pistarini-IAD Washington, D.C. Dulles Intl
22h 26m2 stops New York John F Kennedy Intl Charlotte Douglas
$722American Airlines
Fri, Nov 13 - Thu, Nov 26
American Airlines Logo
9:18 am - 9:10 amIAD  Washington, D.C. Dulles Intl-EZE Buenos Aires Ministro Pistarini
21h 52m2 stops Charlotte Douglas Miami
American Airlines Logo
10:30 pm - 4:16 pmEZE  Buenos Aires Ministro Pistarini-IAD Washington, D.C. Dulles Intl
18h 46m2 stops Dallas/Fort Worth Charlotte Douglas
$722American Airlines
Wed, Mar 10 - Wed, Mar 17
United Airlines Logo
6:30 am - 7:20 amIAD  Washington, D.C. Dulles Intl-EZE Buenos Aires Ministro Pistarini
22h 50m1 stop Houston George Bush Intcntl
United Airlines Logo
9:00 pm - 11:51 pmEZE  Buenos Aires Ministro Pistarini-IAD Washington, D.C. Dulles Intl
27h 51m1 stop Houston George Bush Intcntl
$727United Airlines
Sun, Jan 24 - Wed, Mar 31
United Airlines Logo
5:54 pm - 9:20 amIAD  Washington, D.C. Dulles Intl-EZE Buenos Aires Ministro Pistarini
37h 26m1 stop Houston George Bush Intcntl
United Airlines Logo
11:55 pm - 10:44 pmEZE  Buenos Aires Ministro Pistarini-IAD Washington, D.C. Dulles Intl
24h 49m1 stop Houston George Bush Intcntl
$727United Airlines
Sat, Nov 14 - Fri, Nov 20
Copa Airlines Logo
3:37 pm - 5:20 amIAD  Washington, D.C. Dulles Intl-EZE Buenos Aires Ministro Pistarini
35h 43m1 stop Panama City Tocumen Intl
Copa Airlines Logo
4:20 am - 3:15 amEZE  Buenos Aires Ministro Pistarini-IAD Washington, D.C. Dulles Intl
24h 55m1 stop Panama City Tocumen Intl
$728Copa Airlines
Mon, Nov 9 - Wed, Nov 18
Copa Airlines Logo
3:46 pm - 3:00 pmIAD  Washington, D.C. Dulles Intl-EZE Buenos Aires Ministro Pistarini
21h 14m1 stop Panama City Tocumen Intl
Copa Airlines Logo
10:45 am - 5:12 amEZE  Buenos Aires Ministro Pistarini-IAD Washington, D.C. Dulles Intl
19h 27m1 stop Panama City Tocumen Intl
$734Copa Airlines
Thu, Mar 4 - Mon, Mar 15

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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
Oct 19
IAD3:35 pmWashington, D.C. Dulles Intl
13h 05m
1 stop
EZE5:40 amBuenos Aires Ministro Pistarini
Oct 29
EZE7:25 amBuenos Aires Ministro Pistarini
20h 10m
2 stops
IAD2:35 amWashington, D.C. Dulles Intl
$785
Avianca
Feb 28
IAD3:00 amWashington, D.C. Dulles Intl
19h 30m
2 stops
EZE12:30 amBuenos Aires Ministro Pistarini
Mar 9
EZE7:25 amBuenos Aires Ministro Pistarini
20h 10m
2 stops
IAD1:35 amWashington, D.C. Dulles Intl
$786
Avianca
Oct 26
IAD3:30 pmWashington, D.C. Dulles Intl
13h 35m
1 stop
EZE6:05 amBuenos Aires Ministro Pistarini
Nov 11
EZE7:25 amBuenos Aires Ministro Pistarini
20h 10m
2 stops
IAD1:35 amWashington, D.C. Dulles Intl
$803

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
Jan 14
IAD10:05 amWashington, D.C. Dulles Intl
19h 30m
1 stop
EZE7:35 amBuenos Aires Ministro Pistarini
Jan 19
EZE12:50 pmBuenos Aires Ministro Pistarini
23h 11m
2 stops
IAD10:01 amWashington, D.C. Dulles Intl
$721
LATAM Airlines
Nov 28
IAD6:20 pmWashington, D.C. Dulles Intl
14h 35m
1 stop
EZE10:55 amBuenos Aires Ministro Pistarini
Dec 17
EZE11:35 pmBuenos Aires Ministro Pistarini
21h 06m
1 stop
IAD6:41 pmWashington, D.C. Dulles Intl
$737
LATAM Airlines
Nov 18
IAD6:20 pmWashington, D.C. Dulles Intl
14h 35m
1 stop
EZE10:55 amBuenos Aires Ministro Pistarini
Dec 1
EZE8:05 pmBuenos Aires Ministro Pistarini
23h 28m
1 stop
IAD5:33 pmWashington, D.C. Dulles Intl
$738

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.

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Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Buenos Aires

IAD Washington, D.C. Dulles Intl - EZE Buenos Aires Ministro Pistarini

IADEZE

Washington, D.C. Dulles Intl

Thu 1/14

10:05 am-7:35 am

1 stop19h 30m

Buenos Aires Ministro Pistarini

Tue 1/19

12:50 pm-10:01 am

2 stops23h 11m

$721

Washington, D.C.Buenos Aires

IAD Washington, D.C. Dulles Intl - EZE Buenos Aires Ministro Pistarini

IADEZE

Washington, D.C. Dulles Intl

Sun 1/24

7:00 am-7:35 am

1 stop22h 35m

Buenos Aires Ministro Pistarini

Thu 3/25

4:00 am-9:11 am

2 stops30h 11m

$721
Quickest round-trip

Washington, D.C.Buenos Aires

IAD Washington, D.C. Dulles Intl - EZE Buenos Aires Ministro Pistarini

IADEZE

Washington, D.C. Dulles Intl

Fri 11/13

3:00 pm-9:50 am

2 stops16h 50m

Buenos Aires Ministro Pistarini

Thu 11/26

11:35 pm-5:40 pm

1 stop20h 05m

$722

Washington, D.C.Buenos Aires

IAD Washington, D.C. Dulles Intl - EZE Buenos Aires Ministro Pistarini

IADEZE

Washington, D.C. Dulles Intl

Wed 11/18

10:11 am-9:50 am

2 stops21h 39m

Buenos Aires Ministro Pistarini

Wed 12/2

12:20 pm-2:01 pm

2 stops27h 41m

$722

Washington, D.C.Buenos Aires

IAD Washington, D.C. Dulles Intl - EZE Buenos Aires Ministro Pistarini

IADEZE

Washington, D.C. Dulles Intl

Fri 11/13

9:33 am-7:20 am

2 stops19h 47m

Buenos Aires Ministro Pistarini

Thu 11/26

8:45 pm-5:11 pm

2 stops22h 26m

$722

Washington, D.C.Buenos Aires

IAD Washington, D.C. Dulles Intl - EZE Buenos Aires Ministro Pistarini

IADEZE

Washington, D.C. Dulles Intl

Wed 3/10

9:18 am-9:10 am

2 stops21h 52m

Buenos Aires Ministro Pistarini

Wed 3/17

10:30 pm-4:16 pm

2 stops18h 46m

$722

Washington, D.C.Buenos Aires

IAD Washington, D.C. Dulles Intl - EZE Buenos Aires Ministro Pistarini

IADEZE

Washington, D.C. Dulles Intl

Sun 1/24

6:30 am-7:20 am

1 stop22h 50m

Buenos Aires Ministro Pistarini

Wed 3/31

9:00 pm-11:51 pm

1 stop27h 51m

$727

Washington, D.C.Buenos Aires

IAD Washington, D.C. Dulles Intl - EZE Buenos Aires Ministro Pistarini

IADEZE

Washington, D.C. Dulles Intl

Sat 11/14

5:54 pm-9:20 am

1 stop37h 26m

Buenos Aires Ministro Pistarini

Fri 11/20

11:55 pm-10:44 pm

1 stop24h 49m

$727

Washington, D.C.Buenos Aires

IAD Washington, D.C. Dulles Intl - EZE Buenos Aires Ministro Pistarini

IADEZE

Washington, D.C. Dulles Intl

Mon 11/9

3:37 pm-5:20 am

1 stop35h 43m

Buenos Aires Ministro Pistarini

Wed 11/18

4:20 am-3:15 am

1 stop24h 55m

$728

Washington, D.C.Buenos Aires

IAD Washington, D.C. Dulles Intl - EZE Buenos Aires Ministro Pistarini

IADEZE

Washington, D.C. Dulles Intl

Thu 3/4

3:46 pm-3:00 pm

1 stop21h 14m

Buenos Aires Ministro Pistarini

Mon 3/15

10:45 am-5:12 am

1 stop19h 27m

$734

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and Buenos Aires?

Prices are currently typical for flights on this route.

Typical prices usually range from $385 to $895.
The lowest price recently found on this route was $721.

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 $713, 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 November instead. Flights to Buenos Aires in November, while not as cheap as those in April, still average around $724.

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 $809 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 $398 on momondo.

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

As of September 2026, prices for Washington, D.C. Dulles Intl Airport to Buenos Aires flights are approximately 21% 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

Best Price Found

$315

Fastest flight time

13h 10m

Direct flights

None
The best one-way flight to Buenos Aires from Washington, D.C. Dulles Intl Airport in the past 72 hours is $315. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Buenos Aires found on momondo in the last 72 hours is $721.
The fastest flight from Washington, D.C. Dulles Intl Airport to Buenos Aires takes 13h 10m
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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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 13h 10m 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
LATAM AirlinesPriceFrom $317Free CancellationRating
7.4
1,977 reviews
Search LATAM Airlines flights
DeltaPriceFrom $342Free CancellationRating
7.8
8,608 reviews
Search Delta flights
Copa AirlinesPriceFrom $346Free CancellationRating
7.6
1,542 reviews
Search Copa Airlines flights
United AirlinesPriceFrom $486Free CancellationRating
7.4
10,261 reviews
Search United Airlines flights
AviancaPriceFrom $536Free CancellationRating
6.5
2,555 reviews
Search Avianca 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

Buenos Aires Jorge Newbery Airport
Buenos Aires Ministro Pistarini Airport