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Cheap flights from Washington, D.C. Dulles Intl 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. Dulles Intl Airport to Buenos Aires departing on 8/26. 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. Dulles Intl Airport to Buenos Aires (IAD-AEP)

Cheap round-trip flights

Avianca Logo
3:20 pm - 5:40 amIAD-AEP
13h 20m1 stop
Avianca Logo
7:00 am - 2:45 amAEP-IAD
20h 45m2 stops
$638Avianca
Find Deal
Thu, Aug 28 - Thu, Sep 4
LATAM Airlines Logo
10:07 am - 4:05 pmIAD-AEP
28h 58m2 stops
LATAM Airlines Logo
5:05 pm - 6:39 pmAEP-IAD
26h 34m2 stops
$639LATAM Airlines
Find Deal
Thu, Sep 11 - Fri, Sep 19
Avianca Logo
5:45 am - 5:40 amIAD-AEP
22h 55m2 stops
Avianca Logo
7:00 am - 4:20 amAEP-IAD
22h 20m2 stops
$640Avianca
Find Deal
Thu, Aug 28 - Thu, Sep 4
Avianca Logo
7:00 am - 5:40 amIAD-AEP
21h 40m1 stop
Avianca Logo
7:00 am - 5:35 amAEP-IAD
23h 35m1 stop
$649Avianca
Find Deal
Sun, Oct 12 - Thu, Oct 16
Avianca Logo
7:00 am - 5:40 amIAD-AEP
21h 40m1 stop
Avianca Logo
7:00 am - 4:20 amAEP-IAD
22h 20m2 stops
$651Avianca
Find Deal
Sun, Oct 12 - Thu, Oct 16
Avianca Logo
4:30 am - 5:40 amIAD-AEP
23h 10m2 stops
Avianca Logo
7:00 am - 3:10 amAEP-IAD
22h 10m2 stops
$652Avianca
Find Deal
Mon, Nov 3 - Sat, Nov 8
Avianca Logo
3:20 pm - 5:40 amIAD-AEP
13h 20m1 stop
Avianca Logo
7:00 am - 5:35 amAEP-IAD
23h 35m1 stop
$654Avianca
Find Deal
Thu, Aug 28 - Thu, Sep 4
Avianca Logo
7:00 am - 5:40 amIAD-AEP
21h 40m1 stop
Avianca Logo
7:00 am - 2:45 amAEP-IAD
20h 45m2 stops
$655Avianca
Find Deal
Fri, Oct 3 - Fri, Oct 10
LATAM Airlines Logo
12:27 pm - 6:35 pmIAD-AEP
29h 08m2 stops
LATAM Airlines Logo
8:10 pm - 12:12 amAEP-IAD
29h 02m2 stops
$685LATAM Airlines
Find Deal
Sun, Oct 12 - Thu, Oct 16
Logo
7:59 pm - 6:40 pmIAD-AEP
20h 41m2 stops
Logo
7:00 am - 1:15 pmAEP-IAD
32h 15m1 stop
$741
Find Deal
Sat, Nov 15 - Wed, Nov 26

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
Aug 28
IAD3:20 pmWashington, D.C. Dulles Intl
13h 20m
1 stop
AEP5:40 amBuenos Aires Jorge Newbery
Sep 4
AEP7:00 amBuenos Aires Jorge Newbery
20h 45m
2 stops
IAD2:45 amWashington, D.C. Dulles Intl
$638
Find similar
Avianca
Aug 28
IAD5:45 amWashington, D.C. Dulles Intl
22h 55m
2 stops
AEP5:40 amBuenos Aires Jorge Newbery
Sep 4
AEP7:00 amBuenos Aires Jorge Newbery
22h 20m
2 stops
IAD4:20 amWashington, D.C. Dulles Intl
$640
Find similar
Avianca
Aug 22
IAD3:20 pmWashington, D.C. Dulles Intl
13h 20m
1 stop
AEP5:40 amBuenos Aires Jorge Newbery
Sep 4
AEP7:00 amBuenos Aires Jorge Newbery
20h 45m
2 stops
IAD2:45 amWashington, D.C. Dulles Intl
$641
Find similar

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
Sep 3
IAD3:26 pmWashington, D.C. Dulles Intl
18h 04m
2 stops
AEP10:30 amBuenos Aires Jorge Newbery
Sep 24
AEP5:05 pmBuenos Aires Jorge Newbery
19h 35m
2 stops
IAD11:40 amWashington, D.C. Dulles Intl
$639
Find similar
LATAM Airlines
Oct 12
IAD12:27 pmWashington, D.C. Dulles Intl
29h 08m
2 stops
AEP6:35 pmBuenos Aires Jorge Newbery
Oct 16
AEP8:10 pmBuenos Aires Jorge Newbery
29h 02m
2 stops
IAD12:12 amWashington, D.C. Dulles Intl
$685
Find similar
LATAM Airlines
Sep 7
IAD12:13 pmWashington, D.C. Dulles Intl
25h 27m
2 stops
AEP2:40 pmBuenos Aires Jorge Newbery
Sep 21
AEP8:10 pmBuenos Aires Jorge Newbery
37h 59m
2 stops
IAD9:09 amWashington, D.C. Dulles Intl
$688
Find similar

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 August 20, 2025.
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

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Thu 8/28

3:20 pm-5:40 am

1 stop13h 20m

Buenos Aires Jorge Newbery

Thu 9/4

7:00 am-2:45 am

2 stops20h 45m

$638

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Thu 9/11

10:07 am-4:05 pm

2 stops28h 58m

Buenos Aires Jorge Newbery

Fri 9/19

5:05 pm-6:39 pm

2 stops26h 34m

$639

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Thu 8/28

5:45 am-5:40 am

2 stops22h 55m

Buenos Aires Jorge Newbery

Thu 9/4

7:00 am-4:20 am

2 stops22h 20m

$640

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Sun 10/12

7:00 am-5:40 am

1 stop21h 40m

Buenos Aires Jorge Newbery

Thu 10/16

7:00 am-5:35 am

1 stop23h 35m

$649

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Sun 10/12

7:00 am-5:40 am

1 stop21h 40m

Buenos Aires Jorge Newbery

Thu 10/16

7:00 am-4:20 am

2 stops22h 20m

$651

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Mon 11/3

4:30 am-5:40 am

2 stops23h 10m

Buenos Aires Jorge Newbery

Sat 11/8

7:00 am-3:10 am

2 stops22h 10m

$652

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Thu 8/28

3:20 pm-5:40 am

1 stop13h 20m

Buenos Aires Jorge Newbery

Thu 9/4

7:00 am-5:35 am

1 stop23h 35m

$654

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Fri 10/3

7:00 am-5:40 am

1 stop21h 40m

Buenos Aires Jorge Newbery

Fri 10/10

7:00 am-2:45 am

2 stops20h 45m

$655

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Sun 10/12

12:27 pm-6:35 pm

2 stops29h 08m

Buenos Aires Jorge Newbery

Thu 10/16

8:10 pm-12:12 am

2 stops29h 02m

$685

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Sat 11/15

7:59 pm-6:40 pm

2 stops20h 41m

Buenos Aires Jorge Newbery

Wed 11/26

7:00 am-1:15 pm

1 stop32h 15m

$741

Flights are sorted by cheapest round-trip flights 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

What is the cheapest day to depart on your flight to Buenos Aires Jorge Newbery Airport?

The cheapest day to depart from Washington, D.C. Dulles Intl Airport to Buenos Aires Jorge Newbery Airport is on a Tuesday. Travelers who choose to depart for Buenos Aires Jorge Newbery Airport on a Tuesday will often find tickets for as low as $752. The most expensive day to fly to Buenos Aires Jorge Newbery Airport is Thursday, with ticket prices averaging around $1,421.

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 3% 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

Direct flights

None
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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  • 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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