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Cheap flights from Washington, D.C. 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. 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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LATAM Airlines Logo
12:11 pm - 10:30 amIAD-AEP
20h 19m2 stops
LATAM Airlines Logo
5:15 pm - 10:13 amAEP-IAD
18h 58m2 stops
$638LATAM Airlines
Find Deal
vie., nov. 28 - vie., dic. 5
LATAM Airlines Logo
1:00 pm - 2:00 pmIAD-AEP
23h 00m2 stops
LATAM Airlines Logo
5:15 pm - 12:00 pmAEP-IAD
20h 45m2 stops
$640LATAM Airlines
Find Deal
jue., feb. 19 - vie., feb. 27
LATAM Airlines Logo
2:55 pm - 4:05 pmDCA-AEP
24h 10m2 stops
LATAM Airlines Logo
8:10 pm - 10:04 pmAEP-DCA
26h 54m2 stops
$640LATAM Airlines
Find Deal
dom., mar. 29 - dom., abr. 5
LATAM Airlines Logo
10:18 am - 4:00 pmBWI-AEP
27h 42m2 stops
LATAM Airlines Logo
12:40 pm - 5:16 pmAEP-BWI
30h 36m2 stops
$646LATAM Airlines
Find Deal
vie., nov. 7 - lun., nov. 10
Avianca Logo
5:45 am - 5:40 amIAD-AEP
21h 55m1 stop
Avianca Logo
7:00 am - 3:10 amAEP-IAD
22h 10m2 stops
$647Avianca
Find Deal
dom., nov. 16 - dom., nov. 23
Avianca Logo
5:45 am - 5:40 amIAD-AEP
21h 55m1 stop
Avianca Logo
7:00 am - 4:25 amAEP-IAD
23h 25m1 stop
$655Avianca
Find Deal
mié., nov. 5 - jue., nov. 13
Avianca Logo
5:45 am - 5:40 amIAD-AEP
21h 55m1 stop
Avianca Logo
7:00 am - 1:40 amAEP-IAD
20h 40m2 stops
$657Avianca
Find Deal
mié., nov. 5 - jue., nov. 13
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
Multiple Airlines Logo
5:45 am - 5:40 amIAD-AEP
21h 55m1 stop
Multiple Airlines Logo
3:40 am - 11:33 pmAEP-IAD
21h 53m2 stops
$761Multiple Airlines
Find Deal
vie., nov. 28 - jue., dic. 4

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
Nov 28
IAD12:11 pmWashington, D.C. Dulles Intl
20h 19m
2 stops
AEP10:30 amBuenos Aires Jorge Newbery
Dec 5
AEP5:15 pmBuenos Aires Jorge Newbery
18h 58m
2 stops
IAD10:13 amWashington, D.C. Dulles Intl
$638
Find similar
LATAM Airlines
Feb 19
IAD1:00 pmWashington, D.C. Dulles Intl
23h 00m
2 stops
AEP2:00 pmBuenos Aires Jorge Newbery
Feb 27
AEP5:15 pmBuenos Aires Jorge Newbery
20h 45m
2 stops
IAD12:00 pmWashington, D.C. Dulles Intl
$640
Find similar
LATAM Airlines
Nov 7
BWI10:18 amBaltimore/Washington
27h 42m
2 stops
AEP4:00 pmBuenos Aires Jorge Newbery
Nov 10
AEP12:40 pmBuenos Aires Jorge Newbery
30h 36m
2 stops
BWI5:16 pmBaltimore/Washington
$646
Find similar

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
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
22h 10m
2 stops
IAD3:10 amWashington, D.C. Dulles Intl
$647
Find similar
Avianca
Nov 5
IAD5:45 amWashington, D.C. Dulles Intl
21h 55m
1 stop
AEP5:40 amBuenos Aires Jorge Newbery
Nov 13
AEP7:00 amBuenos Aires Jorge Newbery
23h 25m
1 stop
IAD4:25 amWashington, D.C. Dulles Intl
$655
Find similar
Avianca
Nov 5
IAD5:45 amWashington, D.C. Dulles Intl
21h 55m
1 stop
AEP5:40 amBuenos Aires Jorge Newbery
Nov 13
AEP7:00 amBuenos Aires Jorge Newbery
20h 40m
2 stops
IAD1:40 amWashington, D.C. Dulles Intl
$657
Find similar

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 octubre 16, 2025.
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

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

vie. 11/28

12:11 pm-10:30 am

2 stops20h 19m

Buenos Aires Jorge Newbery

vie. 12/5

5:15 pm-10:13 am

2 stops18h 58m

$638

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

jue. 2/19

1:00 pm-2:00 pm

2 stops23h 00m

Buenos Aires Jorge Newbery

vie. 2/27

5:15 pm-12:00 pm

2 stops20h 45m

$640

Washington, D.C.Buenos Aires

DCA - AEP

DCAAEP

Washington, D.C. Reagan-National

dom. 3/29

2:55 pm-4:05 pm

2 stops24h 10m

Buenos Aires Jorge Newbery

dom. 4/5

8:10 pm-10:04 pm

2 stops26h 54m

$640

BaltimoreBuenos Aires

BWI - AEP

BWIAEP

Baltimore/Washington

vie. 11/7

10:18 am-4:00 pm

2 stops27h 42m

Buenos Aires Jorge Newbery

lun. 11/10

12:40 pm-5:16 pm

2 stops30h 36m

$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-3:10 am

2 stops22h 10m

$647

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

mié. 11/5

5:45 am-5:40 am

1 stop21h 55m

Buenos Aires Jorge Newbery

jue. 11/13

7:00 am-4:25 am

1 stop23h 25m

$655

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

mié. 11/5

5:45 am-5:40 am

1 stop21h 55m

Buenos Aires Jorge Newbery

jue. 11/13

7:00 am-1:40 am

2 stops20h 40m

$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

vie. 11/28

5:45 am-5:40 am

1 stop21h 55m

Buenos Aires Jorge Newbery

jue. 12/4

3:40 am-11:33 pm

2 stops21h 53m

$761

Flights are sorted by cheapest round-trip flights 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

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. 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. to Buenos Aires Jorge Newbery Airport flights?

You could potentially save up to 30% 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

Direct flights

None
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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  • 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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