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Cheap flights from Washington, D.C. Reagan-National Airport to Buenos Aires from $274

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. Reagan-National Airport to Buenos Aires departing on 1/12. 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. Reagan-National Airport to Buenos Aires

Cheap round-trip flights

Enter your travel dates to find the best prices.
LATAM Airlines Logo
11:06 am - 9:00 am
DCA
-
EZE
19h 54m2 stops
LATAM Airlines Logo
8:55 pm - 5:00 pm
EZE
-
DCA
21h 05m2 stops
$640LATAM Airlines
Tue, Mar 3 - Tue, Mar 24
Delta Logo
6:15 pm - 7:20 am
DCA
-
EZE
35h 05m1 stop
Delta Logo
8:55 pm - 9:10 am
EZE
-
DCA
14h 15m1 stop
$642Delta
Sat, Jan 31 - Tue, Feb 10
LATAM Airlines Logo
3:40 pm - 7:20 am
DCA
-
EZE
13h 40m1 stop
LATAM Airlines Logo
8:55 pm - 4:29 pm
EZE
-
DCA
21h 34m2 stops
$643LATAM Airlines
Sun, Jan 11 - Wed, Jan 28
United Airlines Logo
2:45 pm - 7:20 am
DCA
-
EZE
14h 35m1 stop
United Airlines Logo
11:55 pm - 10:06 pm
EZE
-
DCA
24h 11m1 stop
$655United Airlines
Sun, Feb 8 - Sun, Feb 15
LATAM Airlines Logo
6:00 pm - 9:00 am
DCA
-
EZE
13h 00m1 stop
LATAM Airlines Logo
8:55 pm - 9:10 am
EZE
-
DCA
14h 15m1 stop
$656LATAM Airlines
Mon, Feb 9 - Mon, Feb 23
LATAM Airlines Logo
2:35 pm - 9:15 am
DCA
-
EZE
16h 40m2 stops
LATAM Airlines Logo
10:25 pm - 4:29 pm
EZE
-
DCA
20h 04m1 stop
$661LATAM Airlines
Sun, Jan 11 - Tue, Jan 27
LATAM Airlines Logo
6:15 pm - 7:20 am
DCA
-
EZE
35h 05m1 stop
LATAM Airlines Logo
8:55 pm - 11:20 am
EZE
-
DCA
16h 25m1 stop
$662LATAM Airlines
Sat, Jan 31 - Sat, Feb 7
LATAM Airlines Logo
1:40 pm - 7:20 am
DCA
-
EZE
15h 40m1 stop
LATAM Airlines Logo
7:45 am - 11:32 pm
EZE
-
DCA
17h 47m2 stops
$663LATAM Airlines
Sun, Jan 11 - Wed, Jan 28
United Airlines Logo
3:59 pm - 7:20 am
DCA
-
EZE
37h 21m1 stop
United Airlines Logo
11:55 pm - 1:49 pm
EZE
-
DCA
15h 54m1 stop
$664United Airlines
Sat, Jan 31 - Mon, Feb 9
Multiple Airlines Logo
10:05 am - 11:45 am
DCA
-
AEP
24h 40m3 stops
Multiple Airlines Logo
5:05 pm - 10:36 pm
AEP
-
DCA
30h 31m2 stops
$914Multiple Airlines
Wed, Mar 18 - Sat, Apr 4

LATAM Airlines flights from Washington, D.C. Reagan-National Airport to Buenos Aires

Our best LATAM Airlines deals on Washington, D.C. Reagan-National Airport to Buenos Aires flight tickets
LATAM Airlines
Dec 30
DCA12:37 pmWashington, D.C. Reagan-National
18h 58m
2 stops
EZE9:35 amBuenos Aires Ministro Pistarini
Jan 23
EZE9:55 pmBuenos Aires Ministro Pistarini
26h 14m
2 stops
DCA10:09 pmWashington, D.C. Reagan-National
$640
Find similar
LATAM Airlines
Jan 11
DCA3:40 pmWashington, D.C. Reagan-National
13h 40m
1 stop
EZE7:20 amBuenos Aires Ministro Pistarini
Jan 28
EZE8:55 pmBuenos Aires Ministro Pistarini
21h 34m
2 stops
DCA4:29 pmWashington, D.C. Reagan-National
$643
Find similar
LATAM Airlines
Feb 9
DCA5:00 pmWashington, D.C. Reagan-National
15h 15m
1 stop
EZE10:15 amBuenos Aires Ministro Pistarini
Feb 16
EZE8:55 pmBuenos Aires Ministro Pistarini
16h 19m
1 stop
DCA11:14 amWashington, D.C. Reagan-National
$656
Find similar

American Airlines flights from Washington, D.C. Reagan-National Airport to Buenos Aires

Our best American Airlines deals on Washington, D.C. Reagan-National Airport to Buenos Aires flight tickets
American Airlines
Jan 15
DCA12:10 pmWashington, D.C. Reagan-National
20h 30m
1 stop
EZE10:40 amBuenos Aires Ministro Pistarini
Jan 26
EZE11:20 pmBuenos Aires Ministro Pistarini
19h 39m
1 stop
DCA4:59 pmWashington, D.C. Reagan-National
$671
Find similar
American Airlines
Jan 11
DCA5:58 pmWashington, D.C. Reagan-National
13h 12m
1 stop
EZE9:10 amBuenos Aires Ministro Pistarini
Jan 27
EZE10:10 amBuenos Aires Ministro Pistarini
15h 24m
2 stops
DCA11:34 pmWashington, D.C. Reagan-National
$780
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Reagan-National 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 18, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Buenos Aires that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

Tue 3/3

11:06 am-9:00 am

2 stops19h 54m

Buenos Aires Ministro Pistarini

Tue 3/24

8:55 pm-5:00 pm

2 stops21h 05m

$640

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

Sat 1/31

6:15 pm-7:20 am

1 stop35h 05m

Buenos Aires Ministro Pistarini

Tue 2/10

8:55 pm-9:10 am

1 stop14h 15m

$642

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

Sun 1/11

3:40 pm-7:20 am

1 stop13h 40m

Buenos Aires Ministro Pistarini

Wed 1/28

8:55 pm-4:29 pm

2 stops21h 34m

$643

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

Sun 2/8

2:45 pm-7:20 am

1 stop14h 35m

Buenos Aires Ministro Pistarini

Sun 2/15

11:55 pm-10:06 pm

1 stop24h 11m

$655

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

Mon 2/9

6:00 pm-9:00 am

1 stop13h 00m

Buenos Aires Ministro Pistarini

Mon 2/23

8:55 pm-9:10 am

1 stop14h 15m

$656

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

Sun 1/11

2:35 pm-9:15 am

2 stops16h 40m

Buenos Aires Ministro Pistarini

Tue 1/27

10:25 pm-4:29 pm

1 stop20h 04m

$661

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

Sat 1/31

6:15 pm-7:20 am

1 stop35h 05m

Buenos Aires Ministro Pistarini

Sat 2/7

8:55 pm-11:20 am

1 stop16h 25m

$662

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

Sun 1/11

1:40 pm-7:20 am

1 stop15h 40m

Buenos Aires Ministro Pistarini

Wed 1/28

7:45 am-11:32 pm

2 stops17h 47m

$663

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

Sat 1/31

3:59 pm-7:20 am

1 stop37h 21m

Buenos Aires Ministro Pistarini

Mon 2/9

11:55 pm-1:49 pm

1 stop15h 54m

$664

Washington, D.C.Buenos Aires

DCA - AEP

DCAAEP

Washington, D.C. Reagan-National

Wed 3/18

10:05 am-11:45 am

3 stops24h 40m

Buenos Aires Jorge Newbery

Sat 4/4

5:05 pm-10:36 pm

2 stops30h 31m

$914

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. Reagan-National 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. Reagan-National Airport and Buenos Aires?

What is the cheapest month to fly to Buenos Aires?

The cheapest month to fly to Buenos Aires from Washington, D.C. Reagan-National Airport is in April. Flight prices, which tend to average around $629, 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. Reagan-National Airport during September instead. Flights to Buenos Aires in September, while not as cheap as those in April, still average around $639.

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. Reagan-National 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. Reagan-National 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.

Can stopping save me money on Washington, D.C. Reagan-National Airport to Buenos Aires flights?

You could potentially save up to 7% on your flight if you consider stops on a Washington, D.C. Reagan-National Airport to Buenos Aires flight.

When to book flights from Washington, D.C. Reagan-National Airport to Buenos Aires

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Reagan-National 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. Reagan-National Airport to Buenos Aires (DCA to BUE) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Reagan-National Airport to Buenos Aires

Fastest flight time

13h 15m

Direct flights

None
The fastest flight from Washington, D.C. Reagan-National Airport to Buenos Aires takes 13h 15m
There are no direct flights from Washington, D.C. Reagan-National Airport to Buenos Aires. There are no popular flight routes from Washington, D.C. Reagan-National Airport to Buenos Aires.
Search flight deals

  • How far is Washington, D.C. Reagan-National to Buenos Aires by plane?

    The straight-line distance from Washington, D.C. Reagan-National to Buenos Aires is 5210.8 mi. A reasonable flight in good conditions will take 13h 15m.

  • When did momondo last update prices for flights from Washington, D.C. Reagan-National Airport to Buenos Aires?

    Prices for flights from Washington, D.C. Reagan-National Airport to Buenos Aires are refreshed on a daily basis.

  • How many operators does momondo search for flights from Washington, D.C. Reagan-National Airport to Buenos Aires?

  • How old do you have to be to fly from Washington, D.C. Reagan-National 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. Reagan-National 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. Reagan-National Airport to Buenos Aires?

Best airlines flying from Washington, D.C. Reagan-National Airport to Buenos Aires

Compare and see reviews for airlines that fly from Washington, D.C. Reagan-National Airport to Buenos Aires with momondo
Airline
Rating
Free Cancellation
Price
LATAM AirlinesPriceFrom $506Free CancellationRating
7.5
1,893 reviews
Search LATAM Airlines flights
United AirlinesPriceFrom $629Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
American AirlinesPriceFrom $629Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights
DeltaPriceFrom $639Free CancellationRating
7.9
8,009 reviews
Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Buenos Aires?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington, D.C. to Buenos Aires. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Washington, D.C. to Buenos Aires with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Buenos Aires from Washington, D.C. with this policy.

How can momondo help me find flights from Washington, D.C. to Buenos Aires?

Once all potential Washington, D.C. to Buenos Aires flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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