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Cheap flights from Seattle to Buenos Aires from C$ 1,052

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 28/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BUE
22 Apr — 29 Apr1
1 adult

Cheap 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 17 April 2025.

Round-trip from

C$ 1,629

One-way from

C$ 1,052

Popular in

December

Cheapest in

October

Average price

C$ 2,024
Delta
  • Delta
  • 10/9-15/9
  • 2 total stops
  • 34h 16m total
  • Seattle to Buenos Aires
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Copa Airlines
  • Copa Airlines
  • 28/6
  • 2 total stops
  • 27h 37m total
  • Seattle to Buenos Aires
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 119 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 57 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Seattle to Buenos Aires

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 17 April 2025.

Mon 3/118:00 a.m.SEA - EZE
2 stops20h 20mUnited Airlines
Tue 18/1111:55 p.m.EZE - SEA
1 stop17h 25mUnited Airlines
Deal found 17/4C$ 1,490
Wed 10/91:45 p.m.SEA - EZE
1 stop16h 00mDelta
Mon 15/98:10 p.m.EZE - SEA
1 stop18h 16mDelta
Deal found 16/4C$ 1,629
Mon 7/79:58 p.m.SEA - EZE
1 stop19h 27mAeromexico
Thu 31/711:25 p.m.EZE - SEA
1 stop18h 55mAeromexico
Deal found 17/4C$ 1,759
Sat 16/85:14 p.m.SEA - EZE
2 stops30h 44mCopa Airlines
Fri 5/92:13 a.m.EZE - SEA
2 stops24h 02mCopa Airlines
Deal found 17/4C$ 1,876
Thu 15/58:50 a.m.SEA - EZE
2 stops19h 10mMultiple Airlines
Tue 27/51:40 a.m.EZE - SEA
2 stops21h 34mMultiple Airlines
Deal found 17/4C$ 2,286
Sun 9/118:00 a.m.SEA - AEP
2 stops22h 00mDelta
Fri 28/116:20 a.m.AEP - SEA
2 stops22h 54mDelta
Deal found 17/4C$ 5,997

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 17 April 2025.
Use the filters below to find and compare flights from Seattle to Buenos Aires that are best for you.

Fly from

Seattle

Fly to

Buenos Aires

Route

Depart

Return

Price

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Wed 10/9

1:45 p.m.-9:45 a.m.

1 stop16h 00m

Buenos Aires Ministro Pistarini

Mon 15/9

8:10 p.m.-10:26 a.m.

1 stop18h 16m

C$ 1,629

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Mon 7/7

7:10 a.m.-8:00 a.m.

1 stop20h 50m

Buenos Aires Ministro Pistarini

Wed 30/7

9:00 p.m.-8:56 p.m.

2 stops27h 56m

C$ 1,636

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Mon 7/7

9:58 p.m.-9:25 p.m.

1 stop19h 27m

Buenos Aires Ministro Pistarini

Mon 28/7

11:25 p.m.-2:20 p.m.

1 stop18h 55m

C$ 1,759

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Sat 16/8

5:14 p.m.-3:58 a.m.

2 stops30h 44m

Buenos Aires Ministro Pistarini

Fri 5/9

2:13 a.m.-10:15 p.m.

2 stops24h 02m

C$ 1,876

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Thu 15/5

8:50 a.m.-8:00 a.m.

2 stops19h 10m

Buenos Aires Ministro Pistarini

Tue 27/5

1:40 a.m.-7:14 p.m.

2 stops21h 34m

C$ 2,286

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Sat 28/6

5:14 p.m.-12:51 a.m.

2 stops27h 37m

C$ 1,052

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Sun 24/8

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

1 stop28h 05m

C$ 1,065

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Sun 14/9

1:45 p.m.-9:45 a.m.

1 stop16h 00m

C$ 1,420

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/4

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

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

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Buenos Aires. Price data was last updated on 11 April 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Buenos Aires, you should look to book at least 11 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.

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

Currently, November is the cheapest month in which you can book a flight from Seattle to Buenos Aires (average of C$ 816). Flying from Seattle to Buenos Aires in December is currently the most expensive (average of C$ 1,063). 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.

Rainfall in Buenos Aires by month

Plan your trip to Buenos Aires by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Buenos Aires ranges from 50.0 - 100.0 mm per month. January is typically the wettest month, when rainfall can reach 100.0 mm. June is typically the driest time to visit Buenos Aires when rainfall is around 50.0 mm.

Temperature in Buenos Aires by month

Plan your trip to Buenos Aires by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Buenos Aires, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 25.0 C. Travellers hoping to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 11.0 C).

Reviews of airlines servicing Buenos Aires

Get insights into the airlines that provide service to Buenos Aires. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Buenos Aires. Reviews last updated 17 April 2025.
Delta
8.0
Very good
7,917 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,917 reviews
Delta
8.0
Very good
7,917 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Copa Airlines
7.6
Good
1,409 reviews
Delta
8.0
Very good
7,917 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Aeromexico
7.5
Good
1,699 reviews
Delta
8.0
Very good
7,917 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,667 reviews
Delta
8.0
Very good
7,917 reviews
Check prices

Entertainment

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • What are the cheapest airlines flying from Seattle to Buenos Aires round-trip?

    Flying on Delta is currently your cheapest option to Buenos Aires, with prices starting at C$ 1,629. Additional round-trip tickets that might be worth considering are offered by United Airlines and Aeromexico, with the lowest prices starting at C$ 1,636 and C$ 1,759, respectively. You may be able to fly from Seattle to Buenos Aires for 15% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Seattle to Buenos Aires one-way?

    C$ 1,052 is the cheapest one-way deal found within the past few days, from Copa Airlines. You may also be able to find cheap deals on United Airlines and Delta, with prices starting from C$ 1,065 and C$ 1,420, respectively.

  • 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, November is the cheapest month in which you can book a flight from Seattle to Buenos Aires (average of C$ 816). Flying from Seattle to Buenos Aires in December is currently the most expensive (average of C$ 1,063). 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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