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Cheap flights from Seattle to Buenos Aires from C$ 1,181

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 27/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BUE
3 Jul — 10 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Buenos Aires

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Buenos Aires
Explore the most affordable flight options available from Seattle to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 June 2026.

Wed 30/98:00 a.m.
SEA
-
EZE
1 stop21h 40m
Delta
Sun 25/107:45 a.m.
EZE
-
SEA
2 stops42h 13m
Delta
Deal found 30/5C$ 1,771
Sun 4/1011:59 p.m.
SEA
-
EZE
2 stops29h 41m
Delta
Sun 25/107:45 a.m.
EZE
-
SEA
2 stops33h 15m
Delta
Deal found 30/5C$ 1,777
Sat 3/1011:59 p.m.
SEA
-
EZE
2 stops53h 41m
Delta
Wed 28/103:55 a.m.
EZE
-
SEA
2 stops22h 03m
Delta
Deal found 30/5C$ 1,814
Wed 11/117:03 a.m.
SEA
-
EZE
1 stop21h 17m
United Airlines
Wed 25/1110:05 p.m.
EZE
-
SEA
1 stop19h 40m
United Airlines
Deal found 2/6C$ 1,818
Wed 4/1111:35 p.m.
SEA
-
EZE
2 stops25h 30m
Delta
Tue 24/118:05 p.m.
EZE
-
SEA
2 stops25h 30m
Delta
Deal found 1/6C$ 1,824
Sun 15/112:00 p.m.
SEA
-
EZE
1 stop36h 20m
United Airlines
Wed 16/1211:55 p.m.
EZE
-
SEA
1 stop24h 17m
United Airlines
Deal found 31/5C$ 1,841
Wed 18/116:00 a.m.
SEA
-
EZE
2 stops19h 05m
Delta
Wed 16/127:45 a.m.
EZE
-
SEA
2 stops19h 20m
Delta
Deal found 31/5C$ 1,866
Fri 2/108:00 a.m.
SEA
-
EZE
2 stops42h 10m
Delta
Wed 28/107:45 a.m.
EZE
-
SEA
2 stops42h 13m
Delta
Deal found 30/5C$ 1,888
Wed 18/118:25 a.m.
SEA
-
EZE
1 stop20h 15m
Delta
Thu 17/121:10 p.m.
EZE
-
SEA
1 stop37h 48m
Delta
Deal found 31/5C$ 1,896
Mon 27/75:00 a.m.
SEA
-
EZE
1 stop23h 00m
United Airlines
Sun 2/89:00 p.m.
EZE
-
SEA
2 stops21h 30m
United Airlines
Deal found 1/6C$ 1,908
Sun 15/1111:59 p.m.
SEA
-
EZE
1 stop26h 21m
United Airlines
Sat 12/1210:05 p.m.
EZE
-
SEA
2 stops21h 13m
United Airlines
Deal found 31/5C$ 1,910
Sun 6/911:00 p.m.
SEA
-
EZE
2 stops29h 00m
United Airlines
Sat 12/99:00 p.m.
EZE
-
SEA
2 stops22h 52m
United Airlines
Deal found 2/6C$ 1,914

Find flight deals from Seattle to Buenos Aires

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Buenos Aires (BUE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 3 June 2026.

Round-trip from

C$ 1,771

One-way from

C$ 1,181

Popular in

May

Cheapest in

March

Average price

C$ 1,809
United Airlines
  • United Airlines
  • 5/8-10/8
  • 3 total stops
  • 50h 43m total
  • Seattle to Buenos Aires
Search Deals
United Airlines
  • United Airlines
  • 27/7
  • 1 total stop
  • 23h 00m total
  • Seattle to Buenos Aires
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 165 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 58 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle 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 629,999 searches. Data last updated 3 June 2026.
Use the filters below to find and compare flights from Seattle to Buenos Aires that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Tue 29/9

11:59 p.m.-6:10 a.m.

2 stops26h 11m

Buenos Aires Ministro Pistarini

Thu 29/10

7:45 a.m.-2:50 p.m.

2 stops35h 05m

C$ 1,771

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Wed 5/8

5:00 a.m.-8:00 a.m.

1 stop23h 00m

Buenos Aires Ministro Pistarini

Mon 10/8

9:00 p.m.-2:24 p.m.

2 stops21h 24m

C$ 1,771

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Wed 22/7

7:05 a.m.-8:00 a.m.

1 stop20h 55m

Buenos Aires Ministro Pistarini

Thu 30/7

9:00 p.m.-12:47 p.m.

1 stop19h 47m

C$ 1,771
Quickest round-trip

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Wed 15/7

8:09 a.m.-9:40 a.m.

1 stop21h 31m

Buenos Aires Ministro Pistarini

Tue 4/8

8:10 p.m.-9:49 a.m.

1 stop17h 39m

C$ 1,771

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Tue 4/8

11:11 p.m.-8:00 a.m.

2 stops28h 49m

Buenos Aires Ministro Pistarini

Thu 13/8

9:00 p.m.-11:44 a.m.

2 stops18h 44m

C$ 1,777

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Wed 11/11

7:03 a.m.-9:20 a.m.

1 stop21h 17m

Buenos Aires Ministro Pistarini

Wed 25/11

10:05 p.m.-2:18 p.m.

2 stops21h 13m

C$ 1,818

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Sun 15/11

2:00 p.m.-7:20 a.m.

1 stop36h 20m

Buenos Aires Ministro Pistarini

Wed 16/12

11:55 p.m.-7:12 p.m.

1 stop24h 17m

C$ 1,841

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Wed 15/7

11:55 a.m.-8:00 a.m.

1 stop16h 05m

Buenos Aires Ministro Pistarini

Wed 22/7

9:00 p.m.-9:10 p.m.

2 stops28h 10m

C$ 1,866

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Wed 15/7

7:20 a.m.-7:40 a.m.

2 stops20h 20m

Buenos Aires Jorge Newbery

Mon 3/8

3:45 p.m.-12:03 p.m.

2 stops24h 18m

C$ 2,447

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 13/7

7:20 a.m.-7:40 a.m.

2 stops20h 20m

Buenos Aires Jorge Newbery

Mon 27/7

8:05 p.m.-1:35 p.m.

2 stops21h 30m

C$ 2,447

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

Showing 1-10 of 18 resultsSorted by cheapest first
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Best time to book a flight from Seattle to Buenos Aires

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Seattle 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 Seattle to Buenos Aires

What is the cheapest month to book a flight from Seattle to Buenos Aires?

Currently, August is the cheapest month in which you can book a flight from Seattle to Buenos Aires (average of C$ 217). Flying from Seattle to Buenos Aires in May is currently the most expensive (average of C$ 2,084). 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.

How much does it cost to fly round-trip from Seattle to Buenos Aires?

How often are flights from Seattle to Buenos Aires delayed?

About 100% of weekly flights between Seattle and Buenos Aires have experienced delays in the past year, with the average delay time being 99 minutes.

What is the most punctual flight time for Seattle to Buenos Aires flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Thursday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

How far ahead should I book a flight from Seattle to Buenos Aires?

To ensure you get the cheapest price possible for a flight from Seattle to Buenos Aires, you should look to book at least 1 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Related info for your journey

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

  • What airport do you fly from for flights from Seattle to Buenos Aires?

    Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Buenos Aires. On average, Seattle/Tacoma Intl has 0 outbound flights to Buenos Aires per day from 0 airlines. Seattle/Tacoma Intl is conveniently located just 18.4 km from Seattle’s city centre.

  • How long is the flight from Seattle to Buenos Aires?

    For as low as C$ 1,771, Delta can have you in Buenos Aires from Seattle in 23h. Seattle and Buenos Aires are separated by a distance of 11122 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle 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 Seattle to Buenos Aires?

    Currently, August is the cheapest month in which you can book a flight from Seattle to Buenos Aires (average of C$ 217). Flying from Seattle to Buenos Aires in May is currently the most expensive (average of C$ 2,084). 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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Why should you use Cheapflights to find cheap flight tickets from Seattle to Buenos Aires?

Millions of users choose and trust Cheapflights to book the best flight deals from Seattle to Buenos Aires for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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Users can book flights with no change fees policies with our dedicated filters. Book flights from Seattle to Buenos Aires flexibly with Cheapflights today.

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