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Buenos Aires

$378+ 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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BUE
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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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 December 18, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/14. 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.
Tue 12/239:20 pmSEA - EZE
1 stop26h 10mMultiple Airlines
Wed 2/49:16 amEZE - SEA
2 stops39h 54mMultiple Airlines
Deal found 12/14$1,189
This Kiwi.com deal was found by Cheapflights users on 12/14. 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.
Tue 12/239:20 pmSEA - EZE
1 stop26h 10mMultiple Airlines
Sat 2/79:16 amEZE - SEA
2 stops39h 54mMultiple Airlines
Deal found 12/14$1,194
This Kiwi.com deal was found by Cheapflights users on 12/14. 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.
Tue 12/239:20 pmSEA - EZE
1 stop26h 10mMultiple Airlines
Thu 2/54:55 pmEZE - SEA
2 stops34h 34mMultiple Airlines
Deal found 12/14$1,212
This Kiwi.com deal was found by Cheapflights users on 12/14. 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.
Tue 12/239:20 pmSEA - EZE
1 stop26h 10mMultiple Airlines
Sun 2/84:55 pmEZE - SEA
2 stops32h 12mMultiple Airlines
Deal found 12/14$1,219
This Kiwi.com deal was found by Cheapflights users on 12/14. 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.
Tue 12/239:20 pmSEA - EZE
1 stop26h 10mMultiple Airlines
Tue 2/39:16 amEZE - SEA
2 stops29h 45mMultiple Airlines
Deal found 12/14$1,239
This United Airlines deal was found by Cheapflights users on 12/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/225:00 amSEA - EZE
1 stop21h 20mUnited Airlines
Wed 2/410:05 pmEZE - SEA
2 stops22h 56mUnited Airlines
Deal found 12/14$1,259
This United Airlines deal was found by Cheapflights users on 12/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/226:45 amSEA - EZE
1 stop19h 35mUnited Airlines
Thu 2/511:55 pmEZE - SEA
2 stops23h 31mUnited Airlines
Deal found 12/14$1,263
This United Airlines deal was found by Cheapflights users on 12/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/226:45 amSEA - EZE
1 stop19h 35mUnited Airlines
Fri 2/610:05 pmEZE - SEA
1 stop19h 44mUnited Airlines
Deal found 12/14$1,299
This United Airlines deal was found by Cheapflights users on 12/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/211:43 pmSEA - EZE
1 stop36h 37mUnited Airlines
Thu 2/511:55 pmEZE - SEA
1 stop17h 54mUnited Airlines
Deal found 12/14$1,328
This LATAM Airlines deal was found by Cheapflights users on 12/17. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3112:35 pmPDX - EZE
1 stop15h 25mMultiple Airlines
Sat 1/178:55 pmEZE - PDX
1 stop18h 39mMultiple Airlines
Deal found 12/17$1,341
This United Airlines deal was found by Cheapflights users on 12/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/175:00 amSEA - EZE
2 stops23h 20mUnited Airlines
Mon 2/211:55 pmEZE - SEA
1 stop17h 54mUnited Airlines
Deal found 12/14$1,345
This LATAM Airlines deal was found by Cheapflights users on 12/17. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1911:54 amPDX - EZE
1 stop16h 06mMultiple Airlines
Mon 12/298:55 pmEZE - PDX
1 stop19h 30mMultiple Airlines
Deal found 12/17$1,441

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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$946
(LATAM Airlines)

One-way from

$378
(Kiwi.com)

Popular in

December

Cheapest in

June

Average price

$1,455
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. 1% potential increase in price ($19 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 18, 2025.
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

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Mon 2/9

2:57 pm-1:04 am

2 stops29h 07m

Buenos Aires Ministro Pistarini

Wed 2/25

9:16 am-1:25 pm

2 stops33h 09m

$941

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Sun 3/22

8:00 am-4:00 pm

2 stops28h 00m

Buenos Aires Jorge Newbery

Sun 3/29

5:05 pm-9:49 pm

2 stops32h 44m

$966

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 3/2

7:10 am-10:30 am

2 stops22h 20m

Buenos Aires Jorge Newbery

Tue 3/17

2:55 pm-2:41 pm

2 stops27h 46m

$966

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 4/6

6:15 am-6:30 pm

2 stops32h 15m

Buenos Aires Jorge Newbery

Mon 4/13

8:05 pm-9:59 pm

2 stops29h 54m

$1,038

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 4/6

6:15 am-6:30 pm

2 stops32h 15m

Buenos Aires Jorge Newbery

Wed 4/15

8:05 pm-9:59 pm

2 stops29h 54m

$1,038

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Thu 4/2

8:35 am-5:00 pm

2 stops28h 25m

Buenos Aires Jorge Newbery

Thu 4/16

3:40 pm-7:33 pm

2 stops31h 53m

$1,038

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Mon 2/2

11:55 am-9:00 am

1 stop16h 05m

Buenos Aires Ministro Pistarini

Sun 2/22

4:05 am-9:55 pm

2 stops22h 50m

$1,046

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Mon 2/16

11:59 pm-7:20 am

2 stops26h 21m

Buenos Aires Ministro Pistarini

Wed 3/4

11:55 pm-6:04 pm

2 stops23h 09m

$1,050

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Thu 1/29

12:57 pm-9:20 am

1 stop15h 23m

Buenos Aires Ministro Pistarini

Thu 2/5

11:55 pm-9:15 pm

2 stops26h 20m

$1,050

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Tue 2/3

6:15 am-9:00 am

1 stop21h 45m

Buenos Aires Ministro Pistarini

Tue 2/24

10:25 pm-6:49 pm

2 stops25h 24m

$1,050

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 58 results
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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, June is the cheapest month in which you can book a flight from State of Washington to Buenos Aires (average of $691). Flying from State of Washington to Buenos Aires in October is currently the most expensive (average of $1,227). 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.

What is the cheapest time of day to fly from WA to BUE?

Find hourly flight availability from Washington to Buenos Aires. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

It’s optimal to fly from State of Washington to Buenos Aires at noon. By choosing this option you can save up to 26% on the cost of your flight, compared to a flight in the evening.

How much does it cost to fly round-trip from State of Washington to Buenos Aires?

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 $1,046, LATAM Airlines can have you in Buenos Aires from State of Washington in 16h 05m. The distance between State of Washington and Buenos Aires is about 6911 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, June is the cheapest month in which you can book a flight from State of Washington to Buenos Aires (average of $691). Flying from State of Washington to Buenos Aires in October is currently the most expensive (average of $1,227). 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

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Alternative routes for Washington to Buenos Aires

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Washington to Buenos Aires

Discover the top 3 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$1,036Average$1,355FlexibilityNo cancel feeOn-time71%
DeltaCheapest$1,045Average$1,348FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$1,200Average$1,275FlexibilityNo cancel feeOn-time69%

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