HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Buenos Aires

$399+ Cheap flights from Washington to Buenos Aires (BUE)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BUE
feb. 28 — mar. 71
sáb. 2/28
sáb. 3/7
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington to Buenos Aires with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Washington to Buenos Aires

Cheapest flights from Washington to Buenos Aires
Explore the most affordable flight options available from Washington to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 29, 2026.

This Delta deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/910:58 pm
SEA
-
EZE
1 stop31h 17m
Delta
lun. 3/2310:25 pm
EZE
-
SEA
1 stop27h 57m
Delta
Deal found 1/27$962
This Delta deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/161:45 pm
SEA
-
EZE
2 stops31h 35m
Delta
mar. 3/317:45 am
EZE
-
SEA
2 stops30h 16m
Delta
Deal found 1/26$967
This KAYAK deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/1511:20 pm
SEA
-
AEP
2 stops28h 35m
LATAM Airlines
mar. 3/313:45 pm
AEP
-
SEA
2 stops34h 03m
LATAM Airlines
Deal found 1/26$967
This KAYAK deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/197:20 am
SEA
-
EZE
2 stops21h 55m
LATAM Airlines
mar. 3/311:20 pm
EZE
-
SEA
2 stops27h 13m
LATAM Airlines
Deal found 1/26$971
This Delta deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/159:45 pm
SEA
-
EZE
1 stop31h 15m
Delta
mar. 3/317:45 am
EZE
-
SEA
2 stops30h 16m
Delta
Deal found 1/26$981
This Expedia deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/178:08 am
SEA
-
EZE
1 stop21h 27m
Multiple Airlines
lun. 3/303:55 am
EZE
-
SEA
2 stops34h 06m
Multiple Airlines
Deal found 1/26$987
This Kiwi.com deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/249:46 am
SEA
-
EZE
2 stops40h 34m
Multiple Airlines
mié. 3/411:00 am
EZE
-
SEA
1 stop40h 04m
Multiple Airlines
Deal found 1/28$992
This KAYAK deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/511:40 am
PDX
-
EZE
2 stops20h 42m
LATAM Airlines
lun. 8/311:20 pm
EZE
-
PDX
2 stops27h 46m
LATAM Airlines
Deal found 1/27$993
This Kiwi.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/178:08 am
SEA
-
EZE
1 stop31h 07m
Multiple Airlines
jue. 4/24:45 pm
EZE
-
SEA
2 stops33h 15m
Multiple Airlines
Deal found 1/26$995
This SmartFares deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/168:08 am
SEA
-
EZE
1 stop21h 27m
Multiple Airlines
dom. 3/297:35 am
EZE
-
SEA
2 stops42h 13m
Multiple Airlines
Deal found 1/27$996
This Orbitz deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/166:15 am
SEA
-
AEP
2 stops21h 40m
LATAM Airlines
mar. 3/313:45 pm
AEP
-
SEA
2 stops34h 03m
LATAM Airlines
Deal found 1/28$997
This Cheapflightsfares deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/1710:58 pm
SEA
-
EZE
2 stops30h 17m
LATAM Airlines
lun. 3/303:55 am
EZE
-
SEA
2 stops21h 53m
LATAM Airlines
Deal found 1/26$1,000

Find flight deals from Washington to Buenos Aires

Keep the following information in mind while searching for Washington to Buenos Aires flight deals. Data was last updated enero 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$962
(Delta)

One-way from

$399
(eDestinos)

Popular in

April

Cheapest in

June

Average price

$1,387
Provider with most accurate pricing for Seattle/Tacoma Intl-Buenos Aires (BUE) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Buenos Aires (BUE) flights.
Search Deals
From Washington to Buenos Aires (BUE)
Search Deals
One-way flight from Washington to Buenos Aires (BUE)
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($39 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington 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, Cheapflights users made 2,558,603 searches. Data last updated enero 29, 2026.
Use the filters below to find and compare flights from Washington to Buenos Aires that are best for you.

Fly from

Washington

Fly to

Buenos Aires

Route

Depart

Return

Price

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

lun. 3/9

8:00 am-6:05 am

2 stops42h 05m

Buenos Aires Ministro Pistarini

lun. 3/23

10:25 pm-10:45 am

1 stop40h 20m

$962

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

mar. 3/17

8:00 am-10:30 am

2 stops22h 30m

Buenos Aires Jorge Newbery

mar. 3/31

2:55 pm-9:48 pm

2 stops34h 53m

$967

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

mar. 3/17

10:25 pm-3:05 am

2 stops24h 40m

Buenos Aires Ministro Pistarini

mar. 3/31

7:45 am-10:01 am

2 stops30h 16m

$967

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

mié. 3/18

7:20 am-2:40 pm

2 stops27h 20m

Buenos Aires Jorge Newbery

mar. 3/31

11:45 am-9:48 pm

2 stops38h 03m

$967

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

dom. 3/15

9:45 pm-10:15 am

2 stops32h 30m

Buenos Aires Ministro Pistarini

mar. 3/31

7:45 am-10:01 am

2 stops30h 16m

$971

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

lun. 3/16

6:15 am-7:55 am

2 stops21h 40m

Buenos Aires Jorge Newbery

mar. 3/31

3:45 pm-9:48 pm

2 stops34h 03m

$997

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

lun. 3/16

7:20 am-2:40 pm

2 stops27h 20m

Buenos Aires Jorge Newbery

dom. 3/29

5:05 pm-9:48 pm

2 stops32h 43m

$1,000

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

mar. 3/17

8:00 am-10:30 am

2 stops22h 30m

Buenos Aires Jorge Newbery

mié. 4/1

5:05 pm-6:58 pm

2 stops29h 53m

$1,014

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

mar. 4/14

11:51 am-9:45 am

1 stop17h 54m

Buenos Aires Ministro Pistarini

mié. 4/29

7:21 pm-12:06 pm

2 stops20h 45m

$1,025

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

mar. 4/14

6:30 am-7:40 am

2 stops21h 10m

Buenos Aires Jorge Newbery

mié. 4/29

3:45 pm-12:06 pm

2 stops24h 21m

$1,031

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 54 results
1
2
3
...
6

Best time to book a flight from Washington to Buenos Aires

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Washington with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington to Buenos Aires

What is the cheapest month to book a flight from State of Washington to Buenos Aires?

Currently, March is the cheapest month in which you can book a flight from State of Washington to Buenos Aires (average of $159). Flying from State of Washington to Buenos Aires in February is currently the most expensive (average of $1,214). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Washington to Buenos Aires. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from State of Washington to Buenos Aires?

    For as low as $1,047, Delta can have you in Buenos Aires from State of Washington in 21h. The distance between State of Washington and Buenos Aires is about 6836 mi. This flight may include one or multiple stops.

  • What are the most popular routes from State of Washington to Buenos Aires?

    Most travelers choose Seattle/Tacoma Intl - Buenos Aires Ministro Pistarini, Seattle/Tacoma Intl - Buenos Aires Jorge Newbery or Portland - Buenos Aires Ministro Pistarini when deciding on the best route from State of Washington to Buenos Aires.

  • Can I find deals for flights from Washington to Buenos Aires that include hotel bookings?

    Yes. In addition to deals on Washington to Buenos Aires flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to Buenos Aires?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Buenos Aires.

  • Can I find deals for business class flights from Washington to Buenos Aires?

    Yes. Cheapflights offers flight deals from Washington to Buenos Aires by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from State of Washington to Buenos Aires?

    Currently, March is the cheapest month in which you can book a flight from State of Washington to Buenos Aires (average of $159). Flying from State of Washington to Buenos Aires in February is currently the most expensive (average of $1,214). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington to Buenos Aires

See prices for flight routes from nearby airports that may be better suited for you.
Miami to Ministro Pistarini flights
John F Kennedy Intl to Ministro Pistarini flights
John F Kennedy Intl to Jorge Newbery flights
LaGuardia to Ministro Pistarini flights
Miami to Jorge Newbery flights
Newark to Ministro Pistarini flights
Dallas/Fort Worth to Ministro Pistarini flights
Los Angeles to Ministro Pistarini flights
Dulles Intl to Ministro Pistarini flights
Dallas/Fort Worth to Jorge Newbery flights
San Francisco to Ministro Pistarini flights
Hobby to Ministro Pistarini flights
Reagan-National to Ministro Pistarini flights
Atlanta to Ministro Pistarini flights
Dulles Intl to Jorge Newbery flights
Los Angeles to Jorge Newbery flights
Baltimore to Ministro Pistarini flights
Fort Lauderdale to Ministro Pistarini flights
Seattle to Ministro Pistarini flights
Newark to Jorge Newbery flights
San Francisco to Jorge Newbery flights
Boston to Ministro Pistarini flights
O'Hare Intl to Ministro Pistarini flights
George Bush Intcntl to Ministro Pistarini flights
Boston to Jorge Newbery flights
Orlando to Ministro Pistarini flights
Seattle to Jorge Newbery flights
Austin to Ministro Pistarini flights
Orlando to Jorge Newbery flights
Denver to Ministro Pistarini flights
Hobby to Jorge Newbery flights
Midway to Ministro Pistarini flights
Austin to Jorge Newbery flights
Atlanta to Jorge Newbery flights
Ontario to Ministro Pistarini flights
Love Field to Ministro Pistarini flights
Sky Harbor Intl to Ministro Pistarini flights
George Bush Intcntl to Jorge Newbery flights
Raleigh to Ministro Pistarini flights
Tampa to Ministro Pistarini flights
Fort Lauderdale to Jorge Newbery flights
Salt Lake City to Ministro Pistarini flights
Miami to Cordoba flights
Tampa to Jorge Newbery flights
Denver to Jorge Newbery flights
Philadelphia to Ministro Pistarini flights

Top 4 airlines flying from Washington to Buenos Aires

Discover the top 4 airlines that operate flights from Washington to Buenos Aires. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated enero 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$297Average$1,295FlexibilityNo cancel feeOn-timeN/A
LATAM AirlinesCheapest$696Average$1,225FlexibilityNo cancel feeOn-time81%
American AirlinesCheapest$1,036Average$1,200FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$1,179Average$1,275FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.