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Buenos Aires

$386+ 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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BUE
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Find 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 October 30, 2025.

This LATAM Airlines deal was found by Cheapflights users on 10/30. 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.
Thu 11/1310:35 amPDX - EZE
2 stops27h 08mLATAM Airlines
Thu 11/277:43 pmEZE - PDX
2 stops21h 03mLATAM Airlines
Deal found 10/30$884
This LATAM Airlines deal was found by Cheapflights users on 10/30. 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 12/310:10 pmPDX - EZE
2 stops30h 25mLATAM Airlines
Wed 12/107:43 pmEZE - PDX
2 stops21h 07mLATAM Airlines
Deal found 10/30$888
This United Airlines deal was found by Cheapflights users on 10/30. 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 12/1012:55 pmPDX - EZE
1 stop15h 25mUnited Airlines
Tue 12/1611:55 pmEZE - PDX
1 stop17h 17mUnited Airlines
Deal found 10/30$893
This United Airlines deal was found by Cheapflights users on 10/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:55 pmPDX - EZE
1 stop15h 25mUnited Airlines
Wed 12/1011:55 pmEZE - PDX
1 stop17h 17mUnited Airlines
Deal found 10/28$902
This KAYAK deal was found by Cheapflights users on 10/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/37:16 amPDX - AEP
2 stops22h 14mLATAM Airlines
Wed 12/103:40 pmAEP - PDX
2 stops24h 04mLATAM Airlines
Deal found 10/28$902
This United Airlines deal was found by Cheapflights users on 10/30. 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.
Thu 11/137:00 amPDX - EZE
1 stop19h 20mUnited Airlines
Wed 11/2610:05 pmEZE - PDX
2 stops20h 42mUnited Airlines
Deal found 10/30$906
This Delta deal was found by Cheapflights users on 10/29. 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.
Thu 11/2010:10 pmPDX - EZE
1 stop28h 10mDelta
Tue 11/258:55 pmEZE - PDX
1 stop27h 40mDelta
Deal found 10/29$907
This Delta deal was found by Cheapflights users on 10/30. 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.
Sun 11/301:59 pmPDX - EZE
1 stop38h 01mDelta
Tue 12/2311:55 pmEZE - PDX
1 stop23h 58mDelta
Deal found 10/30$915
This LATAM Airlines deal was found by Cheapflights users on 10/30. 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.
Tue 12/27:10 amSEA - EZE
2 stops21h 05mLATAM Airlines
Mon 12/88:00 amEZE - SEA
2 stops19h 54mLATAM Airlines
Deal found 10/30$925
This Travelocity deal was found by Cheapflights users on 10/30. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1310:30 amPDX - AEP
2 stops28h 10mLATAM Airlines
Thu 11/2711:30 amAEP - PDX
2 stops29h 16mLATAM Airlines
Deal found 10/30$932
This LATAM Airlines deal was found by Cheapflights users on 10/28. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/27:55 amSEA - EZE
1 stop20h 40mLATAM Airlines
Tue 12/97:43 pmEZE - SEA
2 stops21h 56mLATAM Airlines
Deal found 10/28$945
This United Airlines deal was found by Cheapflights users on 10/30. 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.
Sat 11/297:00 amPDX - EZE
1 stop19h 20mUnited Airlines
Tue 12/2311:55 pmEZE - PDX
1 stop24h 48mUnited Airlines
Deal found 10/30$952

Cheap 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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$865
(LATAM Airlines)

One-way from

$386
(United)

Popular in

December

Cheapest in

May

Average price

$1,325
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. 4% potential increase in price ($69 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 October 30, 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

Wed 12/10

5:00 am-7:20 am

2 stops21h 20m

Buenos Aires Ministro Pistarini

Tue 12/16

10:05 pm-1:38 pm

2 stops20h 33m

$893

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Mon 1/12

7:00 am-9:00 am

1 stop21h 00m

Buenos Aires Ministro Pistarini

Mon 1/26

8:55 pm-10:49 am

1 stop18h 54m

$902

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Wed 12/3

7:16 am-10:30 am

2 stops22h 14m

Buenos Aires Jorge Newbery

Wed 12/10

3:40 pm-10:44 am

2 stops24h 04m

$902

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Wed 12/3

12:55 pm-9:20 am

1 stop15h 25m

Buenos Aires Ministro Pistarini

Wed 12/10

11:55 pm-10:52 pm

2 stops27h 57m

$902

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Tue 3/10

10:00 am-10:30 am

2 stops20h 30m

Buenos Aires Jorge Newbery

Tue 3/17

5:15 pm-4:15 pm

2 stops27h 00m

$902

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Mon 1/12

7:00 am-9:20 am

1 stop21h 20m

Buenos Aires Ministro Pistarini

Wed 1/28

11:55 pm-6:48 pm

2 stops23h 53m

$902

PortlandBuenos Aires

PDX - AEP

PDXAEP

Portland

Thu 11/13

6:29 am-7:55 am

2 stops20h 26m

Buenos Aires Jorge Newbery

Wed 11/26

3:40 pm-11:45 am

2 stops25h 05m

$902

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Sun 11/30

12:35 am-10:15 am

2 stops28h 40m

Buenos Aires Ministro Pistarini

Tue 12/23

11:55 pm-8:34 pm

2 stops25h 39m

$906

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Mon 1/26

11:59 pm-7:20 am

2 stops26h 21m

Buenos Aires Ministro Pistarini

Mon 3/2

11:55 pm-12:22 pm

1 stop17h 27m

$906

PortlandBuenos Aires

PDX - EZE

PDXEZE

Portland

Thu 11/20

10:10 pm-7:20 am

1 stop28h 10m

Buenos Aires Ministro Pistarini

Tue 11/25

8:55 pm-7:35 pm

1 stop27h 40m

$907

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

Showing 1-10 of 55 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 $742). Flying from State of Washington to Buenos Aires in October is currently the most expensive (average of $1,232). 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 October 30, 2025.

It’s optimal to fly from State of Washington to Buenos Aires in the afternoon. By choosing this option you can save up to 23% on the cost of your flight, compared to a flight in the evening.

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 $902, United Airlines 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 cheapest airlines to fly from State of Washington to Buenos Aires one-way?

    For one-way options, check prices for Copa Airlines. According to our data, you can fly for as low as $540. Users have also found prices from $688 and $688 on American Airlines and Delta, respectively.

  • 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 $742). Flying from State of Washington to Buenos Aires in October is currently the most expensive (average of $1,232). 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

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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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$1,036Average$1,375FlexibilityNo cancel feeOn-time71%
DeltaCheapest$1,164Average$1,625FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$1,200Average$1,278FlexibilityNo cancel feeOn-time69%

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