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Cheap flights from Washington, D.C. Dulles Intl Airport to Buenos Aires from $261

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. Dulles Intl Airport to Buenos Aires departing on 4/15. 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. Dulles Intl Airport to Buenos Aires

Cheap round-trip flights

Enter your travel dates to find the best prices.
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
$608Avianca
Mon, Apr 20 - Fri, May 22
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
Mon, Apr 20 - Fri, May 22
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
$646Avianca
Mon, Apr 20 - Wed, May 13
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
Tue, Apr 21 - Fri, May 22
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
$665Avianca
Wed, May 6 - Mon, May 11
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
$667Avianca
Mon, May 4 - Mon, May 11
Avianca Logo
5:35 pm - 5:40 am
IAD
-
AEP
35h 05m
2 stops
Avianca Logo
7:00 am - 5:20 am
AEP
-
IAD
23h 20m
1 stop
$668Avianca
Sun, Apr 19 - Fri, May 22
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
$671Avianca
Tue, May 5 - Tue, May 26
Avianca Logo
5:45 am - 5:40 am
IAD
-
AEP
22h 55m
2 stops
Avianca Logo
7:00 am - 5:20 am
AEP
-
IAD
23h 20m
1 stop
$672Avianca
Wed, May 6 - Mon, May 11
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
$673Avianca
Mon, May 4 - Mon, Jun 8

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

Our best Avianca deals on Washington, D.C. Dulles Intl Airport to Buenos Aires Jorge Newbery Airport flight tickets
Avianca
Apr 20
IAD3:35 pmWashington, D.C. Dulles Intl
13h 05m
1 stop
AEP5:40 amBuenos Aires Jorge Newbery
May 22
AEP7:00 amBuenos Aires Jorge Newbery
20h 45m
2 stops
IAD2:45 amWashington, D.C. Dulles Intl
$608
Avianca
Apr 20
IAD6:50 amWashington, D.C. Dulles Intl
21h 50m
1 stop
AEP5:40 amBuenos Aires Jorge Newbery
May 22
AEP7:00 amBuenos Aires Jorge Newbery
23h 20m
1 stop
IAD5:20 amWashington, D.C. Dulles Intl
$641
Avianca
Apr 20
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
$646

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

Our best LATAM Airlines deals on Washington, D.C. Dulles Intl Airport to Buenos Aires Jorge Newbery Airport flight tickets
LATAM Airlines
May 6
IAD12:45 pmWashington, D.C. Dulles Intl
25h 05m
2 stops
AEP2:50 pmBuenos Aires Jorge Newbery
May 11
AEP8:40 amBuenos Aires Jorge Newbery
37h 44m
2 stops
IAD9:24 pmWashington, D.C. Dulles Intl
$686
LATAM Airlines
Apr 12
IAD7:29 pmWashington, D.C. Dulles Intl
19h 31m
2 stops
AEP4:00 pmBuenos Aires Jorge Newbery
May 5
AEP3:45 pmBuenos Aires Jorge Newbery
20h 57m
2 stops
IAD11:42 amWashington, D.C. Dulles Intl
$721
LATAM Airlines
Apr 30
IAD12:45 pmWashington, D.C. Dulles Intl
29h 55m
2 stops
AEP7:40 pmBuenos Aires Jorge Newbery
May 7
AEP9:25 amBuenos Aires Jorge Newbery
34h 28m
2 stops
IAD6:53 pmWashington, D.C. Dulles Intl
$750

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport 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 April 3, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Buenos Aires Jorge Newbery Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Mon 4/20

3:35 pm-5:40 am

1 stop13h 05m

Buenos Aires Jorge Newbery

Fri 5/22

7:00 am-2:45 am

2 stops20h 45m

$608

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Mon 4/20

6:50 am-5:40 am

1 stop21h 50m

Buenos Aires Jorge Newbery

Fri 5/22

7:00 am-5:20 am

1 stop23h 20m

$641

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Mon 4/20

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

$646

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Tue 4/21

6:50 am-5:40 am

1 stop21h 50m

Buenos Aires Jorge Newbery

Fri 5/22

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

6:50 am-5:40 am

1 stop21h 50m

Buenos Aires Jorge Newbery

Mon 5/11

7:00 am-5:20 am

1 stop23h 20m

$665

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

Mon 5/11

7:00 am-5:20 am

1 stop23h 20m

$667

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Sun 4/19

5:35 pm-5:40 am

2 stops35h 05m

Buenos Aires Jorge Newbery

Fri 5/22

7:00 am-5:20 am

1 stop23h 20m

$668

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

$671

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Wed 5/6

5:45 am-5:40 am

2 stops22h 55m

Buenos Aires Jorge Newbery

Mon 5/11

7:00 am-5:20 am

1 stop23h 20m

$672

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Mon 5/4

3:35 pm-5:40 am

1 stop13h 05m

Buenos Aires Jorge Newbery

Mon 6/8

7:00 am-2:45 am

2 stops20h 45m

$673

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 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. Dulles Intl Airport to Buenos Aires Jorge Newbery Airport flights?

You could potentially save up to 16% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Buenos Aires Jorge Newbery Airport flight.

When to book flights from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport 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. Dulles Intl Airport to Buenos Aires Jorge Newbery Airport (IAD to AEP) 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 Jorge Newbery Airport

Fastest flight time

13h 05m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Buenos Aires Jorge Newbery Airport takes 13h 05m
There are no direct flights from Washington, D.C. Dulles Intl Airport to Buenos Aires Jorge Newbery Airport. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Buenos Aires Jorge Newbery Airport.
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Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Buenos Aires Jorge Newbery Airport

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

    The distance between Washington, D.C. Dulles Intl and Buenos Aires Jorge Newbery is about 5219.1 mi. 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. Dulles Intl Airport to Buenos Aires Jorge Newbery Airport?

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

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

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

    The travel and health documents required for your trip to Buenos Aires Jorge Newbery Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Buenos Aires Jorge Newbery Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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?

All flight searches from Washington, D.C. to Buenos Aires on momondo can be filtered to show those which offer flexible booking policies.

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?

Of course. momondo tracks the price of Washington, D.C. to Buenos Aires flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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