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Cheap flights from Seattle to Buenos Aires from C$ 1,296

SEA — BUE
11 Oct — 18 Oct1
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

Wed 11/1111:45 a.m. -
1 stop18h 10m
Tue 24/114:00 a.m. -
2 stops23h 05m
Deal found 7/9C$ 2,001
Wed 11/116:00 a.m. -
2 stops20h 40m
Wed 25/115:35 p.m. -
2 stops23h 51m
Deal found 10/9C$ 2,001
Wed 11/113:35 p.m. -
2 stops28h 17m
Tue 24/112:02 a.m. -
2 stops27h 57m
Deal found 11/9C$ 2,003
Wed 11/1110:56 p.m. -
2 stops27h 24m
Wed 25/1110:05 p.m. -
3 stops27h 51m
Deal found 10/9C$ 2,006
Sat 31/104:39 p.m. -
2 stops28h 32m
Wed 11/115:05 a.m. -
2 stops35h 11m
Deal found 9/9C$ 2,021
Thu 31/126:00 a.m. -
2 stops19h 20m
Thu 14/111:35 p.m. -
1 stop39h 51m
Deal found 10/9C$ 2,027
Tue 29/125:15 a.m. -
2 stops23h 35m
Thu 14/111:35 p.m. -
1 stop39h 51m
Deal found 10/9C$ 2,034
Wed 30/125:54 p.m. -
2 stops28h 06m
Fri 15/17:20 a.m. -
2 stops20h 05m
Deal found 10/9C$ 2,070
Tue 29/129:55 p.m. -
2 stops30h 55m
Fri 15/17:20 a.m. -
2 stops20h 05m
Deal found 10/9C$ 2,075
Mon 30/117:05 a.m. -
1 stop19h 15m
Thu 3/1211:55 p.m. -
1 stop24h 22m
Deal found 9/9C$ 2,084
Sun 8/114:39 p.m. -
2 stops26h 28m
Sat 5/122:34 p.m. -
2 stops37h 39m
Deal found 7/9C$ 2,115
Thu 8/107:22 a.m. -
2 stops20h 18m
Wed 21/106:20 p.m. -
2 stops22h 02m
Deal found 9/9C$ 2,291

Find flight deals from Seattle to Buenos Aires

Round-trip from

C$ 1,973

One-way from

C$ 1,296

Popular in

December

Cheapest in

March

Average price

C$ 1,861
United Airlines
  • United Airlines
  • 7/1-19/1
  • 2 total stops
  • 38h 57m total
  • Seattle to Buenos Aires
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Delta
  • Delta
  • 11/12-31/12
  • 1 total stop
  • 20h 40m total
  • Seattle to Buenos Aires
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 188 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 69 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Seattle to Buenos Aires that are best for you.

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Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBuenos Aires

SEA Seattle/Tacoma Intl - EZE Buenos Aires Ministro Pistarini

SEAEZE

Seattle/Tacoma Intl

Fri 11/12

8:10 a.m.-9:50 a.m.

1 stop20h 40m

Buenos Aires Ministro Pistarini

Wed 31/12

12:00 a.m.-7:00 p.m.

Nonstop0h 00m

C$ 1,296

SeattleBuenos Aires

SEA Seattle/Tacoma Intl - AEP Buenos Aires Jorge Newbery

SEAAEP

Seattle/Tacoma Intl

Fri 6/11

6:00 a.m.-2:00 p.m.

2 stops27h 00m

Buenos Aires Jorge Newbery

Wed 31/12

12:00 a.m.-7:00 p.m.

Nonstop0h 00m

C$ 1,296

SeattleBuenos Aires

SEA Seattle/Tacoma Intl - EZE Buenos Aires Ministro Pistarini

SEAEZE

Seattle/Tacoma Intl

Sat 19/9

11:15 p.m.-3:45 p.m.

2 stops36h 30m

Buenos Aires Ministro Pistarini

Wed 31/12

12:00 a.m.-7:00 p.m.

Nonstop0h 00m

C$ 1,433

SeattleBuenos Aires

SEA Seattle/Tacoma Intl - EZE Buenos Aires Ministro Pistarini

SEAEZE

Seattle/Tacoma Intl

Sun 20/9

8:59 a.m.-9:45 a.m.

1 stop20h 46m

Buenos Aires Ministro Pistarini

Wed 31/12

12:00 a.m.-7:00 p.m.

Nonstop0h 00m

C$ 1,433
Quickest round-trip

SeattleBuenos Aires

SEA Seattle/Tacoma Intl - EZE Buenos Aires Ministro Pistarini

SEAEZE

Seattle/Tacoma Intl

Fri 18/9

12:10 p.m.-8:00 a.m.

1 stop15h 50m

Buenos Aires Ministro Pistarini

Wed 31/12

12:00 a.m.-7:00 p.m.

Nonstop0h 00m

C$ 1,454

SeattleBuenos Aires

SEA Seattle/Tacoma Intl - AEP Buenos Aires Jorge Newbery

SEAAEP

Seattle/Tacoma Intl

Fri 18/12

5:40 p.m.-6:30 p.m.

2 stops19h 50m

Buenos Aires Jorge Newbery

Wed 31/12

12:00 a.m.-7:00 p.m.

Nonstop0h 00m

C$ 1,862

SeattleBuenos Aires

SEA Seattle/Tacoma Intl - EZE Buenos Aires Ministro Pistarini

SEAEZE

Seattle/Tacoma Intl

Tue 16/2

6:00 a.m.-9:40 a.m.

1 stop22h 40m

Buenos Aires Ministro Pistarini

Wed 3/3

11:35 p.m.-2:50 p.m.

1 stop20h 15m

C$ 1,973

SeattleBuenos Aires

SEA Seattle/Tacoma Intl - AEP Buenos Aires Jorge Newbery

SEAAEP

Seattle/Tacoma Intl

Tue 16/2

12:00 p.m.-4:00 p.m.

2 stops23h 00m

Buenos Aires Jorge Newbery

Wed 3/3

5:35 p.m.-12:23 p.m.

2 stops23h 48m

C$ 1,973

SeattleBuenos Aires

SEA Seattle/Tacoma Intl - AEP Buenos Aires Jorge Newbery

SEAAEP

Seattle/Tacoma Intl

Mon 15/2

12:00 p.m.-4:00 p.m.

2 stops23h 00m

Buenos Aires Jorge Newbery

Tue 2/3

8:05 p.m.-2:47 p.m.

2 stops23h 42m

C$ 1,973

SeattleBuenos Aires

SEA Seattle/Tacoma Intl - AEP Buenos Aires Jorge Newbery

SEAAEP

Seattle/Tacoma Intl

Mon 11/1

2:30 p.m.-4:00 p.m.

2 stops20h 30m

Buenos Aires Jorge Newbery

Wed 27/1

8:05 p.m.-2:47 p.m.

2 stops23h 42m

C$ 1,973

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/9

Showing 1-10 of 27 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

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$ 1,610). Flying from Seattle to Buenos Aires in December is currently the most expensive (average of C$ 2,505). 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 typical for this route at the moment.
Seattle to Buenos Aires flights typically cost between C$ 1,710 and C$ 2,220 in January.
The cheapest round-trip price found within the last 5 days was C$ 1,973 on Delta (7 Jan-20 Jan).

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 82 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

  • 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$ 1,973, Delta can have you in Buenos Aires from Seattle in 22h 40m. 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, March is the cheapest month in which you can book a flight from Seattle to Buenos Aires (average of C$ 1,610). Flying from Seattle to Buenos Aires in December is currently the most expensive (average of C$ 2,505). 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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