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Cheap flights from Washington, D.C. Dulles Intl Airport to Buenos Aires from $268

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 11/2. 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

Avianca Logo
6:45 am - 5:50 amIAD-EZE
22h 05m1 stop
Avianca Logo
1:40 am - 1:15 pmEZE-IAD
13h 35m1 stop
$618Avianca
Find Deal
Wed, Oct 29 - Tue, Nov 4
United Airlines Logo
10:10 pm - 6:20 amIAD-EZE
31h 10m1 stop
United Airlines Logo
10:05 pm - 11:28 amEZE-IAD
15h 23m1 stop
$619United Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
Avianca Logo
6:45 am - 5:50 amIAD-EZE
22h 05m1 stop
Avianca Logo
7:35 am - 1:40 amEZE-IAD
20h 05m2 stops
$620Avianca
Find Deal
Wed, Oct 29 - Wed, Nov 12
Avianca Logo
5:30 am - 5:50 amIAD-EZE
23h 20m2 stops
Avianca Logo
1:40 am - 3:10 amEZE-IAD
27h 30m2 stops
$621Avianca
Find Deal
Wed, Oct 29 - Tue, Nov 11
Copa Airlines Logo
2:25 am - 12:34 amIAD-EZE
21h 09m1 stop
Copa Airlines Logo
3:47 am - 12:30 amEZE-IAD
21h 43m1 stop
$627Copa Airlines
Find Deal
Sun, Oct 5 - Mon, Oct 20
Delta Logo
5:52 pm - 2:00 pmIAD-EZE
19h 08m2 stops
Delta Logo
8:55 pm - 2:36 pmEZE-IAD
18h 41m1 stop
$639Delta
Find Deal
Sat, Oct 25 - Wed, Oct 29
LATAM Airlines Logo
5:52 pm - 6:35 pmIAD-AEP
23h 43m2 stops
LATAM Airlines Logo
10:35 am - 11:57 amAEP-IAD
26h 22m2 stops
$639LATAM Airlines
Find Deal
Tue, Oct 7 - Sat, Oct 18
LATAM Airlines Logo
7:35 pm - 2:00 pmIAD-EZE
17h 25m2 stops
LATAM Airlines Logo
7:50 am - 11:19 pmEZE-IAD
17h 29m2 stops
$640LATAM Airlines
Find Deal
Mon, Oct 27 - Tue, Nov 11
American Airlines Logo
6:11 am - 7:50 amIAD-EZE
24h 39m2 stops
American Airlines Logo
9:40 pm - 7:21 pmEZE-IAD
23h 41m2 stops
$644American Airlines
Find Deal
Sat, Nov 1 - Sat, Nov 15
Copa Airlines Logo
9:35 am - 3:58 amIAD-EZE
17h 23m1 stop
Copa Airlines Logo
3:47 am - 12:30 amEZE-IAD
21h 43m1 stop
$647Copa Airlines
Find Deal
Sun, Sep 28 - Sat, Oct 11

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

Our best Avianca deals on Washington, D.C. Dulles Intl Airport to Buenos Aires flight tickets
Avianca
Oct 29
IAD6:45 amWashington, D.C. Dulles Intl
22h 05m
1 stop
EZE5:50 amBuenos Aires Ministro Pistarini
Nov 4
EZE1:40 amBuenos Aires Ministro Pistarini
13h 35m
1 stop
IAD1:15 pmWashington, D.C. Dulles Intl
$618
Find similar
Avianca
Oct 29
IAD6:45 amWashington, D.C. Dulles Intl
22h 05m
1 stop
EZE5:50 amBuenos Aires Ministro Pistarini
Nov 12
EZE7:35 amBuenos Aires Ministro Pistarini
20h 05m
2 stops
IAD1:40 amWashington, D.C. Dulles Intl
$620
Find similar
Avianca
Oct 29
IAD5:30 amWashington, D.C. Dulles Intl
23h 20m
2 stops
EZE5:50 amBuenos Aires Ministro Pistarini
Nov 11
EZE1:40 amBuenos Aires Ministro Pistarini
27h 30m
2 stops
IAD3:10 amWashington, D.C. Dulles Intl
$621
Find similar

American Airlines flights from Washington, D.C. Dulles Intl Airport to Buenos Aires

Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to Buenos Aires flight tickets
American Airlines
Nov 1
IAD6:11 amWashington, D.C. Dulles Intl
24h 39m
2 stops
EZE7:50 amBuenos Aires Ministro Pistarini
Nov 15
EZE9:40 pmBuenos Aires Ministro Pistarini
23h 41m
2 stops
IAD7:21 pmWashington, D.C. Dulles Intl
$644
Find similar
American Airlines
Sep 22
IAD11:18 amWashington, D.C. Dulles Intl
21h 57m
2 stops
EZE10:15 amBuenos Aires Ministro Pistarini
Oct 5
EZE10:30 pmBuenos Aires Ministro Pistarini
26h 23m
2 stops
IAD11:53 pmWashington, D.C. Dulles Intl
$646
Find similar
American Airlines
Sep 30
IAD2:21 pmWashington, D.C. Dulles Intl
18h 54m
2 stops
EZE10:15 amBuenos Aires Ministro Pistarini
Nov 7
EZE10:25 pmBuenos Aires Ministro Pistarini
19h 46m
1 stop
IAD4:11 pmWashington, D.C. Dulles Intl
$694
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to Buenos Aires 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 September 17, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Buenos Aires that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Wed 10/29

6:45 am-5:50 am

1 stop22h 05m

Buenos Aires Ministro Pistarini

Tue 11/4

1:40 am-1:15 pm

1 stop13h 35m

$618

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Thu 10/30

10:10 pm-6:20 am

1 stop31h 10m

Buenos Aires Ministro Pistarini

Thu 11/6

10:05 pm-11:28 am

1 stop15h 23m

$619

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Wed 10/29

6:45 am-5:50 am

1 stop22h 05m

Buenos Aires Ministro Pistarini

Wed 11/12

7:35 am-1:40 am

2 stops20h 05m

$620

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Wed 10/29

5:30 am-5:50 am

2 stops23h 20m

Buenos Aires Ministro Pistarini

Tue 11/11

1:40 am-3:10 am

2 stops27h 30m

$621

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Sun 10/5

2:25 am-12:34 am

1 stop21h 09m

Buenos Aires Ministro Pistarini

Mon 10/20

3:47 am-12:30 am

1 stop21h 43m

$627

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Sat 10/25

5:52 pm-2:00 pm

2 stops19h 08m

Buenos Aires Ministro Pistarini

Wed 10/29

8:55 pm-2:36 pm

1 stop18h 41m

$639

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Tue 10/7

5:52 pm-6:35 pm

2 stops23h 43m

Buenos Aires Jorge Newbery

Sat 10/18

10:35 am-11:57 am

2 stops26h 22m

$639

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Mon 10/27

7:35 pm-2:00 pm

2 stops17h 25m

Buenos Aires Ministro Pistarini

Tue 11/11

7:50 am-11:19 pm

2 stops17h 29m

$640

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Sat 11/1

6:11 am-7:50 am

2 stops24h 39m

Buenos Aires Ministro Pistarini

Sat 11/15

9:40 pm-7:21 pm

2 stops23h 41m

$644

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Sun 9/28

9:35 am-3:58 am

1 stop17h 23m

Buenos Aires Ministro Pistarini

Sat 10/11

3:47 am-12:30 am

1 stop21h 43m

$647

Flights are sorted by cheapest round-trip flights first.

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See travel insights to Buenos Aires from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to Buenos Aires

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 month to fly to Buenos Aires?

The cheapest month to fly to Buenos Aires from Washington, D.C. Dulles Intl Airport is in September. Flight prices, which tend to average around $647, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, then book flights to Buenos Aires from Washington, D.C. Dulles Intl Airport during August instead. Flights to Buenos Aires in August, while not as cheap as those in September, still average around $677.

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

On average, the least expensive day to fly to Buenos Aires from Washington, D.C. Dulles Intl Airport is on a Monday. momondo users have found tickets for Monday departures for as low as $1,031. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Buenos Aires on Saturday is $1,094.

What is the cheapest time of day to depart on your flight to Buenos Aires?

Our most recent data shows that the best time of day to fly to Buenos Aires is in the morning. Flights from Washington, D.C. Dulles Intl Airport to Buenos Aires during this time can be as low as $969. Try not to purchase tickets at noon because they tend to be around $1,107. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight to Buenos Aires?

You are more likely to see cheaper flights to Buenos Aires from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $912 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buenos Aires from Washington, D.C. Dulles Intl Airport for as low as $813 on momondo.

Can stopping save me money on Washington, D.C. Dulles Intl Airport to Buenos Aires flights?

You could potentially save up to 1% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Buenos Aires flight.

When to book flights from Washington, D.C. Dulles Intl Airport to Buenos Aires

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 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 (IAD to BUE) 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

Direct flights

None
There are no direct flights from Washington, D.C. Dulles Intl Airport to Buenos Aires. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Buenos Aires.
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  • How far is Washington, D.C. Dulles Intl to Buenos Aires by plane?

    The straight-line distance from Washington, D.C. Dulles Intl to Buenos Aires is 5223.3 mi. Typically, this will take 13h 05m by plane in normal conditions.

  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Buenos Aires?

    Prices for flights from Washington, D.C. Dulles Intl Airport to Buenos Aires are refreshed on a daily basis.

  • How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Buenos Aires?

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

    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.

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

    The necessary travel and health documents for your Buenos Aires 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.

  • What is the most popular airline from Washington, D.C. Dulles Intl Airport to Buenos Aires?

Best airlines flying from Washington, D.C. Dulles Intl Airport to Buenos Aires

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Buenos Aires with momondo
Airline
Rating
Free Cancellation
Price
AviancaPriceFrom $605Free CancellationRating
6.7
2,436 reviews
Search Avianca flights
Copa AirlinesPriceFrom $617Free CancellationRating
7.6
1,533 reviews
Search Copa Airlines flights
United AirlinesPriceFrom $629Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
DeltaPriceFrom $629Free CancellationRating
7.9
7,961 reviews
Search Delta flights

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?

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 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?

If you are not ready to book a flight from Washington, D.C. to Buenos Aires now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Buenos Aires and let you know when they change.

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Find better results for your trip to Argentina

Fly into one of these airports located in Buenos Aires

Airports listed have a maximum distance of 17.0 mi from Buenos Aires
Buenos Aires Jorge Newbery Airport
Buenos Aires Ministro Pistarini Airport