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Cheap flights from Seattle to Buenos Aires from C$ 1,202

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 23/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BUE
26 Aug — 2 Sep1
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 27 July 2026.

Mon 17/810:34 a.m.
SEA
-
EZE
2 stops43h 06m
Multiple Airlines
Thu 27/88:00 a.m.
EZE
-
SEA
1 stop18h 00m
Multiple Airlines
Deal found 25/7C$ 1,650
Mon 17/89:30 a.m.
SEA
-
EZE
1 stop31h 55m
Aeromexico
Thu 27/811:25 p.m.
EZE
-
SEA
1 stop24h 30m
Aeromexico
Deal found 25/7C$ 1,689
Wed 4/113:27 p.m.
SEA
-
EZE
2 stops25h 06m
Copa Airlines
Wed 18/115:16 a.m.
EZE
-
SEA
2 stops35h 00m
Copa Airlines
Deal found 27/7C$ 1,781
Sat 31/104:39 p.m.
SEA
-
EZE
2 stops28h 32m
Copa Airlines
Wed 11/115:16 a.m.
EZE
-
SEA
2 stops35h 00m
Copa Airlines
Deal found 27/7C$ 1,788
Thu 8/106:43 p.m.
SEA
-
EZE
2 stops27h 47m
Copa Airlines
Sat 31/1010:43 p.m.
EZE
-
SEA
2 stops31h 16m
Copa Airlines
Deal found 27/7C$ 1,802
Sat 14/114:39 p.m.
SEA
-
EZE
2 stops28h 14m
Copa Airlines
Sat 5/124:18 a.m.
EZE
-
SEA
2 stops25h 15m
Copa Airlines
Deal found 24/7C$ 1,823
Tue 1/94:45 p.m.
SEA
-
EZE
2 stops31h 51m
Copa Airlines
Sun 13/94:15 a.m.
EZE
-
SEA
2 stops21h 42m
Copa Airlines
Deal found 22/7C$ 1,847
Thu 20/812:10 p.m.
SEA
-
EZE
1 stop15h 50m
United Airlines
Mon 24/89:00 p.m.
EZE
-
SEA
1 stop21h 52m
United Airlines
Deal found 22/7C$ 1,874
Sat 22/84:35 p.m.
SEA
-
EZE
2 stops28h 16m
Copa Airlines
Sun 30/83:48 a.m.
EZE
-
SEA
2 stops39h 51m
Copa Airlines
Deal found 25/7C$ 1,890
Wed 19/83:30 p.m.
SEA
-
EZE
2 stops29h 21m
Copa Airlines
Sun 23/812:10 a.m.
EZE
-
SEA
2 stops25h 41m
Copa Airlines
Deal found 27/7C$ 1,916
Mon 23/1112:30 p.m.
SEA
-
AEP
2 stops22h 30m
Delta
Thu 14/13:50 p.m.
AEP
-
SEA
2 stops26h 10m
Delta
Deal found 26/7C$ 1,942
Mon 12/102:30 p.m.
SEA
-
AEP
2 stops21h 30m
Delta
Wed 21/106:20 p.m.
AEP
-
SEA
2 stops25h 01m
Delta
Deal found 23/7C$ 1,970

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 27 July 2026.

Round-trip from

C$ 1,650

One-way from

C$ 1,202

Popular in

May

Cheapest in

November

Average price

C$ 1,871
17/8-27/8
  • 17/8-27/8
  • 3 total stops
  • 61h 06m total
  • Seattle to Buenos Aires
Search Deals
Delta
  • Delta
  • 23/9
  • 2 total stops
  • 41h 41m total
  • Seattle to Buenos Aires
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 174 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 65 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 27 July 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

Wed 4/11

3:27 p.m.-9:33 p.m.

2 stops25h 06m

Buenos Aires Ministro Pistarini

Tue 17/11

3:40 a.m.-1:01 a.m.

2 stops26h 21m

C$ 1,781

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Tue 22/9

12:05 p.m.-10:26 p.m.

2 stops30h 21m

Buenos Aires Ministro Pistarini

Tue 6/10

2:49 p.m.-11:26 p.m.

2 stops36h 37m

C$ 1,781

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Thu 8/10

6:43 p.m.-2:30 a.m.

2 stops27h 47m

Buenos Aires Ministro Pistarini

Wed 21/10

5:25 a.m.-1:15 a.m.

2 stops23h 50m

C$ 1,781

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Sat 31/10

4:39 p.m.-1:11 a.m.

2 stops28h 32m

Buenos Aires Ministro Pistarini

Wed 11/11

5:16 a.m.-11:16 a.m.

2 stops35h 00m

C$ 1,788

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Tue 1/9

4:45 p.m.-4:36 a.m.

2 stops31h 51m

Buenos Aires Ministro Pistarini

Sun 13/9

4:15 a.m.-9:57 p.m.

2 stops21h 42m

C$ 1,847

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Thu 20/8

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

1 stop21h 00m

Buenos Aires Ministro Pistarini

Mon 24/8

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

2 stops21h 24m

C$ 1,874

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Fri 28/8

5:20 p.m.-2:30 a.m.

2 stops29h 10m

Buenos Aires Ministro Pistarini

Thu 10/9

8:59 a.m.-7:32 p.m.

2 stops38h 33m

C$ 1,890

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 21/9

11:35 a.m.-4:00 p.m.

2 stops24h 25m

Buenos Aires Jorge Newbery

Wed 7/10

8:05 p.m.-1:43 p.m.

2 stops21h 38m

C$ 1,970

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Sun 20/9

10:59 p.m.-7:40 a.m.

2 stops28h 41m

Buenos Aires Jorge Newbery

Wed 7/10

8:05 p.m.-2:50 p.m.

2 stops22h 45m

C$ 1,970

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Sun 18/10

10:35 p.m.-7:40 a.m.

2 stops29h 05m

Buenos Aires Jorge Newbery

Wed 28/10

5:35 p.m.-12:17 p.m.

2 stops22h 42m

C$ 1,970

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/7

Showing 1-10 of 26 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, March is the cheapest month in which you can book a flight from Seattle to Buenos Aires (average of C$ 1,642). Flying from Seattle to Buenos Aires in May is currently the most expensive (average of C$ 2,467). 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?

Airfare is below average for this route at the moment.
Seattle to Buenos Aires flights typically cost between C$ 1,942 and C$ 2,156 in August.
The cheapest round-trip price found within the last 5 days was C$ 1,650 on Multiple Airlines (17 Aug-27 Aug).

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 81 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$ 1,970, Copa Airlines can have you in Buenos Aires from Seattle in 24h 25m. Seattle and Buenos Aires are separated by a distance of 11106 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, March is the cheapest month in which you can book a flight from Seattle to Buenos Aires (average of C$ 1,642). Flying from Seattle to Buenos Aires in May is currently the most expensive (average of C$ 2,467). 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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