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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 11/28. 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.
LATAM Airlines Logo
7:50 pm - 4:05 pmIAD-AEP
19h 15m2 stops
LATAM Airlines Logo
5:00 pm - 12:01 pmAEP-IAD
20h 01m2 stops
$640LATAM Airlines
Find Deal
lun., abr. 6 - mié., abr. 22
Avianca Logo
5:30 am - 5:40 amIAD-AEP
23h 10m2 stops
Avianca Logo
7:00 am - 4:20 amAEP-IAD
22h 20m2 stops
$646Avianca
Find Deal
lun., mar. 23 - mar., mar. 31
Avianca Logo
5:45 am - 5:40 amIAD-AEP
21h 55m1 stop
Avianca Logo
7:00 am - 4:25 amAEP-IAD
23h 25m1 stop
$647Avianca
Find Deal
dom., nov. 16 - dom., nov. 23
Avianca Logo
3:00 am - 5:40 amIAD-AEP
24h 40m2 stops
Avianca Logo
7:00 am - 4:25 amAEP-IAD
23h 25m1 stop
$657Avianca
Find Deal
sáb., nov. 15 - dom., nov. 23
Avianca Logo
3:00 am - 5:40 amIAD-AEP
24h 40m2 stops
Avianca Logo
7:00 am - 1:40 amAEP-IAD
20h 40m2 stops
$658Avianca
Find Deal
sáb., nov. 15 - dom., nov. 23
Avianca Logo
6:45 am - 5:40 amIAD-AEP
21h 55m1 stop
Avianca Logo
7:00 am - 5:35 amAEP-IAD
23h 35m1 stop
$665Avianca
Find Deal
dom., mar. 22 - mar., mar. 31
Avianca Logo
5:45 am - 5:40 amIAD-AEP
21h 55m1 stop
Avianca Logo
7:00 am - 4:25 amAEP-IAD
23h 25m1 stop
$673Avianca
Find Deal
mié., nov. 12 - sáb., nov. 22
Avianca Logo
2:35 pm - 5:40 amIAD-AEP
13h 05m1 stop
Avianca Logo
7:00 am - 1:40 amAEP-IAD
20h 40m2 stops
$675Avianca
Find Deal
mar., nov. 11 - mar., nov. 18
LATAM Airlines Logo
5:52 pm - 6:40 pmIAD-AEP
23h 48m2 stops
LATAM Airlines Logo
3:40 pm - 11:31 amAEP-IAD
21h 51m2 stops
$689LATAM Airlines
Find Deal
jue., oct. 30 - mié., nov. 12
Multiple Airlines Logo
5:45 am - 5:40 amIAD-AEP
21h 55m1 stop
Multiple Airlines Logo
10:30 am - 6:15 pmAEP-IAD
33h 45m2 stops
$726Multiple Airlines
Find Deal
dom., nov. 30 - sáb., dic. 13

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
Mar 23
IAD5:30 amWashington, D.C. Dulles Intl
23h 10m
2 stops
AEP5:40 amBuenos Aires Jorge Newbery
Mar 31
AEP7:00 amBuenos Aires Jorge Newbery
22h 20m
2 stops
IAD4:20 amWashington, D.C. Dulles Intl
$646
Find similar
Avianca
Nov 16
IAD5:45 amWashington, D.C. Dulles Intl
21h 55m
1 stop
AEP5:40 amBuenos Aires Jorge Newbery
Nov 23
AEP7:00 amBuenos Aires Jorge Newbery
23h 25m
1 stop
IAD4:25 amWashington, D.C. Dulles Intl
$647
Find similar
Avianca
Nov 15
IAD3:00 amWashington, D.C. Dulles Intl
24h 40m
2 stops
AEP5:40 amBuenos Aires Jorge Newbery
Nov 23
AEP7:00 amBuenos Aires Jorge Newbery
23h 25m
1 stop
IAD4:25 amWashington, D.C. Dulles Intl
$657
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
Apr 6
IAD7:50 pmWashington, D.C. Dulles Intl
19h 15m
2 stops
AEP4:05 pmBuenos Aires Jorge Newbery
Apr 22
AEP5:00 pmBuenos Aires Jorge Newbery
20h 01m
2 stops
IAD12:01 pmWashington, D.C. Dulles Intl
$640
Find similar
LATAM Airlines
Oct 30
IAD5:52 pmWashington, D.C. Dulles Intl
23h 48m
2 stops
AEP6:40 pmBuenos Aires Jorge Newbery
Nov 12
AEP3:40 pmBuenos Aires Jorge Newbery
21h 51m
2 stops
IAD11:31 amWashington, D.C. Dulles Intl
$689
Find similar
LATAM Airlines
Nov 16
IAD7:49 pmWashington, D.C. Dulles Intl
20h 51m
2 stops
AEP6:40 pmBuenos Aires Jorge Newbery
Nov 23
AEP10:30 pmBuenos Aires Jorge Newbery
39h 01m
2 stops
IAD11:31 amWashington, D.C. Dulles Intl
$695
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 octubre 14, 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

lun. 4/6

7:50 pm-4:05 pm

2 stops19h 15m

Buenos Aires Jorge Newbery

mié. 4/22

5:00 pm-12:01 pm

2 stops20h 01m

$640

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

lun. 3/23

5:30 am-5:40 am

2 stops23h 10m

Buenos Aires Jorge Newbery

mar. 3/31

7:00 am-4:20 am

2 stops22h 20m

$646

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

dom. 11/16

5:45 am-5:40 am

1 stop21h 55m

Buenos Aires Jorge Newbery

dom. 11/23

7:00 am-4:25 am

1 stop23h 25m

$647

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

sáb. 11/15

3:00 am-5:40 am

2 stops24h 40m

Buenos Aires Jorge Newbery

dom. 11/23

7:00 am-4:25 am

1 stop23h 25m

$657

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

sáb. 11/15

3:00 am-5:40 am

2 stops24h 40m

Buenos Aires Jorge Newbery

dom. 11/23

7:00 am-1:40 am

2 stops20h 40m

$658

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

dom. 3/22

6:45 am-5:40 am

1 stop21h 55m

Buenos Aires Jorge Newbery

mar. 3/31

7:00 am-5:35 am

1 stop23h 35m

$665

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

mié. 11/12

5:45 am-5:40 am

1 stop21h 55m

Buenos Aires Jorge Newbery

sáb. 11/22

7:00 am-4:25 am

1 stop23h 25m

$673

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

mar. 11/11

2:35 pm-5:40 am

1 stop13h 05m

Buenos Aires Jorge Newbery

mar. 11/18

7:00 am-1:40 am

2 stops20h 40m

$675

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

jue. 10/30

5:52 pm-6:40 pm

2 stops23h 48m

Buenos Aires Jorge Newbery

mié. 11/12

3:40 pm-11:31 am

2 stops21h 51m

$689

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

dom. 11/30

5:45 am-5:40 am

1 stop21h 55m

Buenos Aires Jorge Newbery

sáb. 12/13

10:30 am-6:15 pm

2 stops33h 45m

$726

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 36% 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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