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Cheap flights from Washington, D.C. to Buenos Aires from $298

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 6/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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

Cheap round-trip flights

Enter your travel dates to find the best prices.
LATAM Airlines Logo
11:00 am - 7:40 am
DCA
-
AEP
19h 40m
2 stops
LATAM Airlines Logo
3:45 pm - 2:05 pm
AEP
-
DCA
23h 20m
2 stops
$667LATAM Airlines
Fri, Aug 21 - Sun, Aug 30
LATAM Airlines Logo
5:42 pm - 2:50 pm
IAD
-
AEP
20h 08m
2 stops
LATAM Airlines Logo
5:35 pm - 2:44 pm
AEP
-
IAD
22h 09m
2 stops
$695LATAM Airlines
Tue, Sep 1 - Tue, Sep 8
LATAM Airlines Logo
2:00 pm - 2:50 pm
DCA
-
AEP
23h 50m
2 stops
LATAM Airlines Logo
3:45 pm - 2:05 pm
AEP
-
DCA
23h 20m
2 stops
$695LATAM Airlines
Fri, Aug 14 - Fri, Aug 21
Delta Logo
5:20 pm - 2:50 pm
BWI
-
AEP
20h 30m
2 stops
Delta Logo
3:45 pm - 10:56 am
AEP
-
BWI
20h 11m
2 stops
$722Delta
Sun, Sep 6 - Thu, Sep 24
LATAM Airlines Logo
7:15 pm - 6:30 pm
IAD
-
AEP
22h 15m
2 stops
LATAM Airlines Logo
8:05 pm - 11:36 am
AEP
-
IAD
16h 31m
2 stops
$722LATAM Airlines
Mon, Sep 7 - Mon, Sep 14
LATAM Airlines Logo
2:55 pm - 9:30 pm
DCA
-
AEP
29h 35m
2 stops
LATAM Airlines Logo
5:05 pm - 10:54 am
AEP
-
DCA
18h 49m
2 stops
$722LATAM Airlines
Wed, Oct 7 - Tue, Oct 27
Multiple Airlines Logo
5:30 pm - 6:30 pm
IAD
-
AEP
23h 00m
2 stops
Multiple Airlines Logo
7:00 am - 1:15 pm
AEP
-
IAD
32h 15m
1 stop
$724Multiple Airlines
Mon, Nov 9 - Wed, Nov 18
Avianca Logo
2:35 pm - 5:40 am
IAD
-
AEP
13h 05m
1 stop
Avianca Logo
7:00 am - 1:40 am
AEP
-
IAD
20h 40m
2 stops
$730Avianca
Wed, Dec 2 - Sun, Dec 20
Avianca Logo
5:45 am - 5:40 am
IAD
-
AEP
21h 55m
1 stop
Avianca Logo
7:00 am - 1:40 am
AEP
-
IAD
20h 40m
2 stops
$731Avianca
Wed, Dec 2 - Sun, Dec 20
Avianca Logo
5:45 am - 5:40 am
IAD
-
AEP
21h 55m
1 stop
Avianca Logo
7:00 am - 1:40 am
AEP
-
IAD
20h 40m
2 stops
$732Avianca
Wed, Dec 2 - Sun, Dec 20

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
Aug 16
IAD5:42 pmWashington, D.C. Dulles Intl
20h 08m
2 stops
AEP2:50 pmBuenos Aires Jorge Newbery
Aug 27
AEP5:35 pmBuenos Aires Jorge Newbery
25h 53m
2 stops
IAD6:28 pmWashington, D.C. Dulles Intl
$667
LATAM Airlines
Sep 1
IAD5:42 pmWashington, D.C. Dulles Intl
20h 08m
2 stops
AEP2:50 pmBuenos Aires Jorge Newbery
Sep 8
AEP5:35 pmBuenos Aires Jorge Newbery
22h 09m
2 stops
IAD2:44 pmWashington, D.C. Dulles Intl
$695
LATAM Airlines
Aug 17
DCA2:00 pmWashington, D.C. Reagan-National
25h 00m
2 stops
AEP4:00 pmBuenos Aires Jorge Newbery
Aug 29
AEP3:45 pmBuenos Aires Jorge Newbery
23h 20m
2 stops
DCA2:05 pmWashington, D.C. Reagan-National
$698

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
Dec 2
IAD2:35 pmWashington, D.C. Dulles Intl
13h 05m
1 stop
AEP5:40 amBuenos Aires Jorge Newbery
Dec 20
AEP7:00 amBuenos Aires Jorge Newbery
20h 40m
2 stops
IAD1:40 amWashington, D.C. Dulles Intl
$730
Avianca
Dec 2
IAD5:45 amWashington, D.C. Dulles Intl
21h 55m
1 stop
AEP5:40 amBuenos Aires Jorge Newbery
Dec 20
AEP7:00 amBuenos Aires Jorge Newbery
20h 40m
2 stops
IAD1:40 amWashington, D.C. Dulles Intl
$731
Avianca
Dec 2
IAD5:45 amWashington, D.C. Dulles Intl
21h 55m
1 stop
AEP5:40 amBuenos Aires Jorge Newbery
Dec 20
AEP7:00 amBuenos Aires Jorge Newbery
20h 40m
2 stops
IAD1:40 amWashington, D.C. Dulles Intl
$732

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 June 6, 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

DCA - AEP

DCAAEP

Washington, D.C. Reagan-National

Fri 8/21

11:00 am-7:40 am

2 stops19h 40m

Buenos Aires Jorge Newbery

Sun 8/30

3:45 pm-2:05 pm

2 stops23h 20m

$667

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Tue 9/1

5:42 pm-2:50 pm

2 stops20h 08m

Buenos Aires Jorge Newbery

Tue 9/8

5:35 pm-2:44 pm

2 stops22h 09m

$695

Washington, D.C.Buenos Aires

DCA - AEP

DCAAEP

Washington, D.C. Reagan-National

Fri 8/14

2:00 pm-2:50 pm

2 stops23h 50m

Buenos Aires Jorge Newbery

Fri 8/21

3:45 pm-2:05 pm

2 stops23h 20m

$695

BaltimoreBuenos Aires

BWI - AEP

BWIAEP

Baltimore/Washington

Sun 9/6

5:20 pm-2:50 pm

2 stops20h 30m

Buenos Aires Jorge Newbery

Thu 9/24

3:45 pm-10:56 am

2 stops20h 11m

$722

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Mon 9/7

7:15 pm-6:30 pm

2 stops22h 15m

Buenos Aires Jorge Newbery

Mon 9/14

8:05 pm-11:36 am

2 stops16h 31m

$722

Washington, D.C.Buenos Aires

DCA - AEP

DCAAEP

Washington, D.C. Reagan-National

Wed 10/7

2:55 pm-9:30 pm

2 stops29h 35m

Buenos Aires Jorge Newbery

Tue 10/27

5:05 pm-10:54 am

2 stops18h 49m

$722

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Mon 11/9

5:30 pm-6:30 pm

2 stops23h 00m

Buenos Aires Jorge Newbery

Wed 11/18

7:00 am-1:15 pm

1 stop32h 15m

$724
Quickest round-trip

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Wed 12/2

2:35 pm-5:40 am

1 stop13h 05m

Buenos Aires Jorge Newbery

Sun 12/20

7:00 am-1:40 am

2 stops20h 40m

$730

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Wed 12/2

5:45 am-5:40 am

1 stop21h 55m

Buenos Aires Jorge Newbery

Sun 12/20

7:00 am-1:40 am

2 stops20h 40m

$731

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Wed 12/2

5:45 am-5:40 am

1 stop21h 55m

Buenos Aires Jorge Newbery

Sun 12/20

7:00 am-1:40 am

2 stops20h 40m

$732

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 43% 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.
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Frequently asked questions about flying from Washington, D.C. to Buenos Aires Jorge Newbery Airport

  • 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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