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Cheap flights from Seattle to Buenos Aires from C$ 1,022

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 14/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BUE
2 Apr — 9 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 28 March 2025.

Round-trip from

C$ 1,722

One-way from

C$ 1,022

Popular in

December

Cheapest in

October

Average price

C$ 1,972
United Airlines
  • United Airlines
  • 4/9-19/9
  • 5 total stops
  • 47h 07m total
  • Seattle to Buenos Aires
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Copa Airlines
  • Copa Airlines
  • 14/5
  • 2 total stops
  • 22h 38m total
  • Seattle to Buenos Aires
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Highest demand for flights based on searches. 4% potential increase in price (C$ 127 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 63 potential savings vs. average RT price).
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Average for round-trip flights in March 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 28 March 2025.

Thu 4/99:05 a.m.SEA - EZE
2 stops18h 55mUnited Airlines
Fri 19/99:00 p.m.EZE - SEA
3 stops28h 12mUnited Airlines
Deal found 27/3C$ 1,722
Sun 25/55:16 p.m.SEA - EZE
1 stop36h 29mDelta
Sat 7/68:10 p.m.EZE - SEA
1 stop26h 39mDelta
Deal found 26/3C$ 1,739
Tue 27/59:34 a.m.SEA - EZE
1 stop31h 51mAeromexico
Thu 12/611:25 p.m.EZE - SEA
1 stop24h 26mAeromexico
Deal found 26/3C$ 1,812
Tue 29/46:15 a.m.SEA - EZE
2 stops22h 04mCopa Airlines
Fri 9/53:47 a.m.EZE - SEA
2 stops22h 10mCopa Airlines
Deal found 27/3C$ 1,970
Thu 24/412:59 a.m.SEA - EZE
2 stops27h 51mMultiple Airlines
Sat 10/510:30 p.m.EZE - SEA
2 stops22h 20mMultiple Airlines
Deal found 27/3C$ 2,594
Tue 27/511:45 a.m.SEA - AEP
2 stops28h 15mDelta
Mon 9/62:40 p.m.AEP - SEA
2 stops23h 35mDelta
Deal found 26/3C$ 2,680
Sat 24/52:15 p.m.SEA - EZE
1 stop36h 10mLufthansa
Wed 11/64:40 p.m.EZE - SEA
2 stops48h 18mLufthansa
Deal found 26/3C$ 21,262

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 28 March 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

Thu 4/9

9:05 a.m.-8:00 a.m.

2 stops18h 55m

Buenos Aires Ministro Pistarini

Fri 19/9

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

3 stops28h 12m

C$ 1,722

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Sun 25/5

5:16 p.m.-9:45 a.m.

1 stop36h 29m

Buenos Aires Ministro Pistarini

Sat 7/6

8:10 p.m.-6:49 p.m.

1 stop26h 39m

C$ 1,739

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Tue 27/5

9:34 a.m.-9:25 p.m.

1 stop31h 51m

Buenos Aires Ministro Pistarini

Thu 12/6

11:25 p.m.-7:51 p.m.

1 stop24h 26m

C$ 1,812

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Tue 29/4

6:15 a.m.-8:19 a.m.

2 stops22h 04m

Buenos Aires Ministro Pistarini

Fri 9/5

3:47 a.m.-9:57 p.m.

2 stops22h 10m

C$ 1,970

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Thu 24/4

12:59 a.m.-8:50 a.m.

2 stops27h 51m

Buenos Aires Ministro Pistarini

Sat 10/5

10:30 p.m.-4:50 p.m.

2 stops22h 20m

C$ 2,594

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Tue 27/5

11:45 a.m.-8:00 p.m.

2 stops28h 15m

Buenos Aires Jorge Newbery

Mon 9/6

2:40 p.m.-10:15 a.m.

2 stops23h 35m

C$ 2,680

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Sat 24/5

2:15 p.m.-6:25 a.m.

1 stop36h 10m

Buenos Aires Ministro Pistarini

Wed 11/6

4:40 p.m.-12:58 p.m.

2 stops48h 18m

C$ 21,262

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Wed 14/5

7:33 p.m.-10:11 p.m.

2 stops22h 38m

C$ 1,022

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Sat 28/6

11:45 p.m.-8:00 a.m.

2 stops28h 15m

C$ 1,126

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/3

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 21 March 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Buenos Aires, you should look to book at least 3 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 28 March 2025.
See what other customers who have flown with Delta, Copa Airlines and Aeromexico from Seattle to Buenos Aires have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,896 reviews
Check prices

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

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
7,896 reviews
Delta
8.0
Very good
7,896 reviews
Check prices

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

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
7.5
Good
1,395 reviews
Delta
8.0
Very good
7,896 reviews
Check prices

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

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
1,701 reviews
Delta
8.0
Very good
7,896 reviews
Check prices

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

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
8,603 reviews
Delta
8.0
Very good
7,896 reviews
Check prices

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

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.
Lufthansa
6.7
Okay
6,956 reviews
Delta
8.0
Very good
7,896 reviews
Check prices

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

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 United Airlines is currently your cheapest option to Buenos Aires, with prices starting at C$ 1,722. Additional round-trip tickets that might be worth considering are offered by Delta and Aeromexico, with the lowest prices starting at C$ 1,739 and C$ 1,812, respectively. You may be able to fly from Seattle to Buenos Aires for 13% less than the average price by searching for these airlines.

  • 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

Browse thousands of different options on Cheapflights for your next trip

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Other flights to Buenos Aires

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