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Cheap flights from Washington, D.C. to Buenos Aires from $269

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. to Buenos Aires departing on 6/10. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Avianca Logo
6:50 am - 5:40 am
IAD
-
AEP
21h 50m
1 stop
Avianca Logo
7:00 am - 2:15 pm
AEP
-
IAD
32h 15m
1 stop
$631Avianca
Wed, May 6 - Thu, May 28
Avianca Logo
6:50 am - 5:40 am
IAD
-
AEP
21h 50m
1 stop
Avianca Logo
7:00 am - 2:45 am
AEP
-
IAD
20h 45m
2 stops
$633Avianca
Wed, May 6 - Wed, May 13
LATAM Airlines Logo
6:00 am - 4:00 pm
IAD
-
AEP
33h 00m
2 stops
LATAM Airlines Logo
3:45 pm - 6:08 pm
AEP
-
IAD
27h 23m
2 stops
$637LATAM Airlines
Sun, Apr 19 - Thu, Apr 23
LATAM Airlines Logo
3:00 pm - 6:25 pm
DCA
-
AEP
26h 25m
2 stops
LATAM Airlines Logo
7:20 pm - 1:49 pm
AEP
-
DCA
19h 29m
2 stops
$637LATAM Airlines
Wed, May 6 - Tue, May 12
LATAM Airlines Logo
3:08 pm - 9:40 am
IAD
-
AEP
17h 32m
2 stops
LATAM Airlines Logo
3:45 pm - 6:53 pm
AEP
-
IAD
28h 08m
2 stops
$639LATAM Airlines
Wed, May 13 - Mon, May 18
Avianca Logo
3:35 pm - 5:40 am
IAD
-
AEP
13h 05m
1 stop
Avianca Logo
7:00 am - 2:45 am
AEP
-
IAD
20h 45m
2 stops
$640Avianca
Tue, May 5 - Tue, May 26
Avianca Logo
6:50 am - 5:40 am
IAD
-
AEP
21h 50m
1 stop
Avianca Logo
7:00 am - 5:20 am
AEP
-
IAD
23h 20m
1 stop
$641Avianca
Wed, May 6 - Sun, May 17
Avianca Logo
6:50 am - 5:40 am
IAD
-
AEP
21h 50m
1 stop
Avianca Logo
7:00 am - 5:20 am
AEP
-
IAD
23h 20m
1 stop
$654Avianca
Mon, May 4 - Sat, May 30
Avianca Logo
3:35 pm - 5:40 am
IAD
-
AEP
13h 05m
1 stop
Avianca Logo
7:00 am - 2:15 pm
AEP
-
IAD
32h 15m
1 stop
$656Avianca
Wed, May 6 - Wed, Jun 3
Avianca Logo
6:50 am - 5:40 am
IAD
-
AEP
21h 50m
1 stop
Avianca Logo
7:00 am - 2:45 am
AEP
-
IAD
20h 45m
2 stops
$658Avianca
Sun, May 24 - Thu, Jun 4

Avianca flights from Washington, D.C. to Buenos Aires Jorge Newbery Airport

Our best Avianca deals on Washington, D.C. to Buenos Aires Jorge Newbery Airport flight tickets
Avianca
May 6
IAD6:50 amWashington, D.C. Dulles Intl
21h 50m
1 stop
AEP5:40 amBuenos Aires Jorge Newbery
May 28
AEP7:00 amBuenos Aires Jorge Newbery
32h 15m
1 stop
IAD2:15 pmWashington, D.C. Dulles Intl
$631
Avianca
May 6
IAD6:50 amWashington, D.C. Dulles Intl
21h 50m
1 stop
AEP5:40 amBuenos Aires Jorge Newbery
May 13
AEP7:00 amBuenos Aires Jorge Newbery
20h 45m
2 stops
IAD2:45 amWashington, D.C. Dulles Intl
$633
Avianca
May 5
IAD3:35 pmWashington, D.C. Dulles Intl
13h 05m
1 stop
AEP5:40 amBuenos Aires Jorge Newbery
May 26
AEP7:00 amBuenos Aires Jorge Newbery
20h 45m
2 stops
IAD2:45 amWashington, D.C. Dulles Intl
$640

LATAM Airlines flights from Washington, D.C. to Buenos Aires Jorge Newbery Airport

Our best LATAM Airlines deals on Washington, D.C. to Buenos Aires Jorge Newbery Airport flight tickets
LATAM Airlines
Apr 19
IAD6:00 amWashington, D.C. Dulles Intl
33h 00m
2 stops
AEP4:00 pmBuenos Aires Jorge Newbery
Apr 23
AEP3:45 pmBuenos Aires Jorge Newbery
27h 23m
2 stops
IAD6:08 pmWashington, D.C. Dulles Intl
$637
LATAM Airlines
May 13
IAD3:08 pmWashington, D.C. Dulles Intl
17h 32m
2 stops
AEP9:40 amBuenos Aires Jorge Newbery
May 18
AEP3:45 pmBuenos Aires Jorge Newbery
28h 08m
2 stops
IAD6:53 pmWashington, D.C. Dulles Intl
$639
LATAM Airlines
Apr 12
IAD8:02 pmWashington, D.C. Dulles Intl
24h 28m
3 stops
AEP9:30 pmBuenos Aires Jorge Newbery
Apr 21
AEP8:05 pmBuenos Aires Jorge Newbery
29h 37m
2 stops
IAD12:42 amWashington, D.C. Dulles Intl
$667

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Buenos Aires Jorge Newbery Airport 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 9, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Buenos Aires Jorge Newbery Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Wed 5/6

6:50 am-5:40 am

1 stop21h 50m

Buenos Aires Jorge Newbery

Thu 5/28

7:00 am-2:15 pm

1 stop32h 15m

$631

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Wed 5/6

6:50 am-5:40 am

1 stop21h 50m

Buenos Aires Jorge Newbery

Wed 5/13

7:00 am-2:45 am

2 stops20h 45m

$633

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Sun 4/19

6:00 am-4:00 pm

2 stops33h 00m

Buenos Aires Jorge Newbery

Thu 4/23

3:45 pm-6:08 pm

2 stops27h 23m

$637

Washington, D.C.Buenos Aires

DCA - AEP

DCAAEP

Washington, D.C. Reagan-National

Wed 5/6

3:00 pm-6:25 pm

2 stops26h 25m

Buenos Aires Jorge Newbery

Tue 5/12

7:20 pm-1:49 pm

2 stops19h 29m

$637

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Wed 5/13

3:08 pm-9:40 am

2 stops17h 32m

Buenos Aires Jorge Newbery

Mon 5/18

3:45 pm-6:53 pm

2 stops28h 08m

$639
Quickest round-trip

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Tue 5/5

3:35 pm-5:40 am

1 stop13h 05m

Buenos Aires Jorge Newbery

Tue 5/26

7:00 am-2:45 am

2 stops20h 45m

$640

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Wed 5/6

6:50 am-5:40 am

1 stop21h 50m

Buenos Aires Jorge Newbery

Sun 5/17

7:00 am-5:20 am

1 stop23h 20m

$641

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Mon 5/4

6:50 am-5:40 am

1 stop21h 50m

Buenos Aires Jorge Newbery

Sat 5/30

7:00 am-5:20 am

1 stop23h 20m

$654

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Wed 5/6

3:35 pm-5:40 am

1 stop13h 05m

Buenos Aires Jorge Newbery

Wed 6/3

7:00 am-2:15 pm

1 stop32h 15m

$656

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Sun 5/24

6:50 am-5:40 am

1 stop21h 50m

Buenos Aires Jorge Newbery

Thu 6/4

7:00 am-2:45 am

2 stops20h 45m

$658

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. to Buenos Aires Jorge Newbery Airport

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

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

You could potentially save up to 4% on your flight if you consider stops on a Washington, D.C. to Buenos Aires Jorge Newbery Airport flight.

When to book flights from Washington, D.C. to Buenos Aires Jorge Newbery Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Buenos Aires Jorge Newbery Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to Buenos Aires Jorge Newbery Airport (WAS to AEP) flight deals and tips

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

Fastest flight time

13h 05m

Direct flights

None
The fastest flight from Washington, D.C. to Buenos Aires Jorge Newbery Airport takes 13h 05m
There are no direct flights from Washington, D.C. to Buenos Aires Jorge Newbery Airport. There are no popular flight routes from Washington, D.C. to Buenos Aires Jorge Newbery Airport.
Search flight deals

  • How far is Washington, D.C. to Buenos Aires Jorge Newbery by plane?

    Buenos Aires Jorge Newbery is 5210.2 mi away from Washington, D.C.. In terms of flight time, this usually takes a little over 13h 05m.

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

    Prices for flights from Washington, D.C. to Buenos Aires Jorge Newbery Airport refresh daily.

  • How old do you have to be to fly from Washington, D.C. to Buenos Aires Jorge Newbery Airport?

    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. to Buenos Aires Jorge Newbery Airport.

  • What documentation or ID do you need to fly to Buenos Aires Jorge Newbery Airport?

    The necessary travel and health documents for your Buenos Aires Jorge Newbery Airport 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.

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?

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 offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington, D.C. to Buenos Aires.

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 simply researching potential flights to Buenos Aires, momondo offers a useful price alert feature which will track prices for flights to Buenos Aires from Washington, D.C. and alert you when they change.

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