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Cheap flights from Washington, D.C. Reagan-National 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. Reagan-National Airport to Buenos Aires departing on 11/26. 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

United Airlines Logo
6:00 am - 6:20 amDCA-EZE
23h 20m1 stop
United Airlines Logo
10:05 pm - 1:49 pmEZE-DCA
17h 44m1 stop
$619United Airlines
Find Deal
jue., oct. 30 - jue., nov. 6
LATAM Airlines Logo
7:35 pm - 1:55 pmDCA-EZE
17h 20m2 stops
LATAM Airlines Logo
6:13 pm - 1:45 pmEZE-DCA
20h 32m2 stops
$627LATAM Airlines
Find Deal
lun., oct. 6 - mar., oct. 21
Delta Logo
5:00 pm - 10:15 amDCA-EZE
15h 15m1 stop
Delta Logo
10:25 pm - 6:00 pmEZE-DCA
21h 35m1 stop
$639Delta
Find Deal
lun., nov. 3 - dom., nov. 16
LATAM Airlines Logo
2:40 pm - 9:40 amDCA-AEP
18h 00m2 stops
LATAM Airlines Logo
5:15 pm - 1:45 pmAEP-DCA
21h 30m2 stops
$639LATAM Airlines
Find Deal
mar., oct. 21 - vie., oct. 31
LATAM Airlines Logo
7:35 pm - 4:00 pmDCA-AEP
19h 25m2 stops
LATAM Airlines Logo
8:25 pm - 1:45 pmAEP-DCA
19h 20m2 stops
$643LATAM Airlines
Find Deal
jue., oct. 30 - jue., nov. 6
Delta Logo
7:59 am - 9:45 amDCA-EZE
24h 46m1 stop
Delta Logo
10:25 pm - 5:59 pmEZE-DCA
21h 34m1 stop
$645Delta
Find Deal
mar., oct. 14 - mié., dic. 3
American Airlines Logo
8:11 pm - 9:39 amDCA-EZE
12h 28m1 stop
American Airlines Logo
11:20 pm - 1:29 pmEZE-DCA
16h 09m2 stops
$682American Airlines
Find Deal
jue., oct. 30 - jue., nov. 6
American Airlines Logo
3:53 pm - 7:25 amDCA-EZE
14h 32m1 stop
American Airlines Logo
8:30 pm - 2:22 pmEZE-DCA
18h 52m1 stop
$689American Airlines
Find Deal
mar., oct. 7 - vie., oct. 17
Multiple Airlines Logo
11:05 am - 5:30 pmDCA-AEP
29h 25m3 stops
Multiple Airlines Logo
1:40 pm - 10:26 amAEP-DCA
22h 46m2 stops
$959Multiple Airlines
Find Deal
mié., oct. 29 - mié., nov. 5
Multiple Airlines Logo
6:00 am - 6:40 pmDCA-AEP
34h 40m3 stops
Multiple Airlines Logo
4:50 am - 8:55 amAEP-DCA
30h 05m3 stops
$1,278Multiple Airlines
Find Deal
mar., nov. 18 - jue., nov. 20

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
Oct 6
DCA7:35 pmWashington, D.C. Reagan-National
17h 20m
2 stops
EZE1:55 pmBuenos Aires Ministro Pistarini
Oct 21
EZE6:13 pmBuenos Aires Ministro Pistarini
20h 32m
2 stops
DCA1:45 pmWashington, D.C. Reagan-National
$627
Find similar
LATAM Airlines
Oct 21
DCA2:40 pmWashington, D.C. Reagan-National
18h 00m
2 stops
AEP9:40 amBuenos Aires Jorge Newbery
Oct 31
AEP5:15 pmBuenos Aires Jorge Newbery
21h 30m
2 stops
DCA1:45 pmWashington, D.C. Reagan-National
$639
Find similar
LATAM Airlines
Oct 30
DCA7:35 pmWashington, D.C. Reagan-National
18h 15m
2 stops
EZE2:50 pmBuenos Aires Ministro Pistarini
Nov 5
EZE4:05 amBuenos Aires Ministro Pistarini
20h 00m
2 stops
DCA10:05 pmWashington, D.C. Reagan-National
$643
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
Sep 22
DCA1:39 pmWashington, D.C. Reagan-National
19h 36m
1 stop
EZE10:15 amBuenos Aires Ministro Pistarini
Sep 25
EZE8:40 pmBuenos Aires Ministro Pistarini
17h 37m
2 stops
DCA1:17 pmWashington, D.C. Reagan-National
$644
Find similar
American Airlines
Oct 30
DCA8:11 pmWashington, D.C. Reagan-National
12h 28m
1 stop
EZE9:39 amBuenos Aires Ministro Pistarini
Nov 6
EZE11:20 pmBuenos Aires Ministro Pistarini
16h 09m
2 stops
DCA1:29 pmWashington, D.C. Reagan-National
$682
Find similar
American Airlines
Oct 7
DCA3:53 pmWashington, D.C. Reagan-National
14h 32m
1 stop
EZE7:25 amBuenos Aires Ministro Pistarini
Oct 17
EZE8:30 pmBuenos Aires Ministro Pistarini
18h 52m
1 stop
DCA2:22 pmWashington, D.C. Reagan-National
$689
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 septiembre 16, 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

jue. 10/30

6:00 am-6:20 am

1 stop23h 20m

Buenos Aires Ministro Pistarini

jue. 11/6

10:05 pm-1:49 pm

1 stop17h 44m

$619

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

lun. 10/6

7:35 pm-1:55 pm

2 stops17h 20m

Buenos Aires Ministro Pistarini

mar. 10/21

6:13 pm-1:45 pm

2 stops20h 32m

$627

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

lun. 11/3

5:00 pm-10:15 am

1 stop15h 15m

Buenos Aires Ministro Pistarini

dom. 11/16

10:25 pm-6:00 pm

1 stop21h 35m

$639

Washington, D.C.Buenos Aires

DCA - AEP

DCAAEP

Washington, D.C. Reagan-National

mar. 10/21

2:40 pm-9:40 am

2 stops18h 00m

Buenos Aires Jorge Newbery

vie. 10/31

5:15 pm-1:45 pm

2 stops21h 30m

$639

Washington, D.C.Buenos Aires

DCA - AEP

DCAAEP

Washington, D.C. Reagan-National

jue. 10/30

7:35 pm-4:00 pm

2 stops19h 25m

Buenos Aires Jorge Newbery

jue. 11/6

8:25 pm-1:45 pm

2 stops19h 20m

$643

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

mar. 10/14

7:59 am-9:45 am

1 stop24h 46m

Buenos Aires Ministro Pistarini

mié. 12/3

10:25 pm-5:59 pm

1 stop21h 34m

$645

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

jue. 10/30

8:11 pm-9:39 am

1 stop12h 28m

Buenos Aires Ministro Pistarini

jue. 11/6

11:20 pm-1:29 pm

2 stops16h 09m

$682

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

mar. 10/7

3:53 pm-7:25 am

1 stop14h 32m

Buenos Aires Ministro Pistarini

vie. 10/17

8:30 pm-2:22 pm

1 stop18h 52m

$689

Washington, D.C.Buenos Aires

DCA - AEP

DCAAEP

Washington, D.C. Reagan-National

mié. 10/29

11:05 am-5:30 pm

3 stops29h 25m

Buenos Aires Jorge Newbery

mié. 11/5

1:40 pm-10:26 am

2 stops22h 46m

$959

Washington, D.C.Buenos Aires

DCA - AEP

DCAAEP

Washington, D.C. Reagan-National

mar. 11/18

6:00 am-6:40 pm

3 stops34h 40m

Buenos Aires Jorge Newbery

jue. 11/20

4:50 am-8:55 am

3 stops30h 05m

$1,278

Flights are sorted by cheapest round-trip flights first.

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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 September. 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 September, then book flights to Buenos Aires from Washington, D.C. Reagan-National Airport during April instead. Flights to Buenos Aires in April, while not as cheap as those in September, still average around $697.

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.

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

Direct flights

None
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.
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  • 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 12h 28m.

  • 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
United AirlinesPriceFrom $629Free CancellationRating
7.4
8,924 reviews
Search United Airlines flights
American AirlinesPriceFrom $639Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $659Free CancellationRating
7.9
7,957 reviews
Search Delta flights
LATAM AirlinesPriceFrom $678Free CancellationRating
7.5
1,847 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?

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