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Cheap flights from Seattle to Buenos Aires from $416

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Buenos Aires departing on 11/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

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LATAM Airlines Logo
7:15 am - 9:15 amSEA-EZE
21h 00m2 stops
LATAM Airlines Logo
8:00 am - 11:23 pmEZE-SEA
20h 23m2 stops
$905LATAM Airlines
Find Deal
Mon, Jan 19 - Mon, Feb 9
LATAM Airlines Logo
7:10 am - 9:15 amSEA-EZE
21h 05m2 stops
LATAM Airlines Logo
7:45 am - 10:54 pmEZE-SEA
20h 09m2 stops
$925LATAM Airlines
Find Deal
Tue, Dec 2 - Mon, Dec 8
Delta Logo
12:00 pm - 9:00 amSEA-EZE
16h 00m1 stop
Delta Logo
8:55 pm - 12:29 pmEZE-SEA
20h 34m1 stop
$957Delta
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Mon, Feb 2 - Thu, Feb 12
Delta Logo
6:00 am - 9:00 amSEA-EZE
22h 00m1 stop
Delta Logo
4:05 am - 10:12 pmEZE-SEA
23h 07m2 stops
$965Delta
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Tue, Feb 17 - Sun, Feb 22
American Airlines Logo
12:41 am - 8:10 amSEA-EZE
26h 29m1 stop
American Airlines Logo
10:25 pm - 10:44 amEZE-SEA
17h 19m1 stop
$977American Airlines
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Tue, Nov 11 - Mon, Nov 17
United Airlines Logo
12:40 pm - 9:20 amSEA-EZE
15h 40m1 stop
United Airlines Logo
11:55 pm - 11:00 pmEZE-SEA
28h 05m1 stop
$978United Airlines
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Thu, Feb 5 - Wed, Feb 11
American Airlines Logo
12:41 am - 8:10 amSEA-EZE
26h 29m1 stop
American Airlines Logo
11:59 pm - 3:31 pmEZE-SEA
20h 32m2 stops
$981American Airlines
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Tue, Nov 11 - Tue, Nov 18
Multiple Airlines Logo
8:45 am - 9:35 amSEA-EZE
19h 50m1 stop
Multiple Airlines Logo
4:05 am - 11:41 pmEZE-SEA
24h 36m2 stops
$985Multiple Airlines
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Tue, Dec 2 - Sun, Dec 7
Multiple Airlines Logo
8:10 am - 3:50 pmSEA-EZE
26h 40m3 stops
Multiple Airlines Logo
11:20 am - 2:20 pmEZE-SEA
32h 00m3 stops
$1,011Multiple Airlines
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Tue, Dec 2 - Tue, Dec 9
United Airlines Logo
7:10 am - 9:20 amSEA-EZE
21h 10m1 stop
United Airlines Logo
11:55 pm - 12:42 pmEZE-SEA
17h 47m1 stop
$1,015United Airlines
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Tue, Dec 2 - Fri, Dec 12

American Airlines flights from Seattle to Buenos Aires

Our best American Airlines deals on Seattle to Buenos Aires flight tickets
American Airlines
Nov 11
SEA12:41 amSeattle/Tacoma Intl
26h 29m
1 stop
EZE8:10 amBuenos Aires Ministro Pistarini
Nov 17
EZE10:25 pmBuenos Aires Ministro Pistarini
17h 19m
1 stop
SEA10:44 amSeattle/Tacoma Intl
$977
Find similar
American Airlines
Nov 11
SEA12:41 amSeattle/Tacoma Intl
26h 29m
1 stop
EZE8:10 amBuenos Aires Ministro Pistarini
Nov 18
EZE11:59 pmBuenos Aires Ministro Pistarini
20h 32m
2 stops
SEA3:31 pmSeattle/Tacoma Intl
$981
Find similar
American Airlines
Nov 18
SEA12:41 amSeattle/Tacoma Intl
26h 29m
1 stop
EZE8:10 amBuenos Aires Ministro Pistarini
Nov 26
EZE11:59 pmBuenos Aires Ministro Pistarini
28h 27m
1 stop
SEA11:26 pmSeattle/Tacoma Intl
$994
Find similar

United Airlines flights from Seattle to Buenos Aires

Our best United Airlines deals on Seattle to Buenos Aires flight tickets
United Airlines
Feb 5
SEA12:40 pmSeattle/Tacoma Intl
15h 40m
1 stop
EZE9:20 amBuenos Aires Ministro Pistarini
Feb 11
EZE11:55 pmBuenos Aires Ministro Pistarini
28h 05m
1 stop
SEA11:00 pmSeattle/Tacoma Intl
$978
Find similar
United Airlines
Dec 2
SEA7:10 amSeattle/Tacoma Intl
21h 10m
1 stop
EZE9:20 amBuenos Aires Ministro Pistarini
Dec 12
EZE11:55 pmBuenos Aires Ministro Pistarini
17h 47m
1 stop
SEA12:42 pmSeattle/Tacoma Intl
$1,015
Find similar
United Airlines
Feb 21
SEA5:20 pmSeattle/Tacoma Intl
33h 00m
2 stops
EZE7:20 amBuenos Aires Ministro Pistarini
Feb 25
EZE11:55 pmBuenos Aires Ministro Pistarini
26h 06m
2 stops
SEA9:01 pmSeattle/Tacoma Intl
$1,019
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momondo 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, momondo users made 832,500 searches. Data last updated October 30, 2025.
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

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Mon 1/19

7:15 am-9:15 am

2 stops21h 00m

Buenos Aires Ministro Pistarini

Mon 2/9

8:00 am-11:23 pm

2 stops20h 23m

$905

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Tue 12/2

7:10 am-9:15 am

2 stops21h 05m

Buenos Aires Ministro Pistarini

Mon 12/8

7:45 am-10:54 pm

2 stops20h 09m

$925

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Mon 2/2

12:00 pm-9:00 am

1 stop16h 00m

Buenos Aires Ministro Pistarini

Thu 2/12

8:55 pm-12:29 pm

1 stop20h 34m

$957

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Tue 2/17

6:00 am-9:00 am

1 stop22h 00m

Buenos Aires Ministro Pistarini

Sun 2/22

4:05 am-10:12 pm

2 stops23h 07m

$965

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Tue 11/11

12:41 am-8:10 am

1 stop26h 29m

Buenos Aires Ministro Pistarini

Mon 11/17

10:25 pm-10:44 am

1 stop17h 19m

$977

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Thu 2/5

12:40 pm-9:20 am

1 stop15h 40m

Buenos Aires Ministro Pistarini

Wed 2/11

11:55 pm-11:00 pm

1 stop28h 05m

$978

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Tue 11/11

12:41 am-8:10 am

1 stop26h 29m

Buenos Aires Ministro Pistarini

Tue 11/18

11:59 pm-3:31 pm

2 stops20h 32m

$981

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Tue 12/2

8:45 am-9:35 am

1 stop19h 50m

Buenos Aires Ministro Pistarini

Sun 12/7

4:05 am-11:41 pm

2 stops24h 36m

$985

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Tue 12/2

8:10 am-3:50 pm

3 stops26h 40m

Buenos Aires Ministro Pistarini

Tue 12/9

11:20 am-2:20 pm

3 stops32h 00m

$1,011

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Tue 12/2

7:10 am-9:20 am

1 stop21h 10m

Buenos Aires Ministro Pistarini

Fri 12/12

11:55 pm-12:42 pm

1 stop17h 47m

$1,015

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Buenos Aires from

How to get the cheapest flight ticket from Seattle to Buenos Aires

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Buenos Aires?

The cheapest month to fly to Buenos Aires from Seattle is in May. Flight prices, which tend to average around $1,283, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of May, then book flights to Buenos Aires from Seattle during September instead. Flights to Buenos Aires in September, while not as cheap as those in May, still average around $1,287.

What is the cheapest day to depart on your flight to Buenos Aires?

On average, the least expensive day to fly to Buenos Aires from Seattle is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $1,328. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Buenos Aires on Saturday is $1,503.

What is the cheapest time of day to depart on your flight to Buenos Aires?

Our most recent data shows that the best time of day to fly to Buenos Aires is in the afternoon. Flights from Seattle to Buenos Aires during this time can be as low as $1,307. Try not to purchase tickets at noon because they tend to be around $1,438. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight to Buenos Aires?

You are more likely to see cheaper flights to Buenos Aires from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $1,379 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Buenos Aires from Seattle for as low as $1,197 on momondo.

Can stopping save me money on Seattle to Buenos Aires flights?

You could potentially save up to 18% on your flight if you consider stops on a Seattle to Buenos Aires flight.

How have Seattle to Buenos Aires flight prices changed over time?

As of October 2025, prices for Seattle to Buenos Aires flights are approximately 35% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Buenos Aires

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Buenos Aires according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Buenos Aires (SEA to BUE) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Buenos Aires

Direct flights

None
There are no direct flights from Seattle to Buenos Aires. There are no popular flight routes from Seattle to Buenos Aires.
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  • How far is Seattle/Tacoma Intl to Buenos Aires by plane?

    The straight-line distance from Seattle/Tacoma Intl to Buenos Aires is 6914.0 mi. Typically, this will take 15h 40m by plane in normal conditions.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Buenos Aires?

    Prices for flights from Seattle/Tacoma Intl Airport to Buenos Aires are refreshed on a daily basis.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Buenos Aires?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Buenos Aires?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Buenos Aires.

  • What documentation or ID do you need to fly to Buenos Aires?

    The necessary travel and health documents for your Buenos Aires trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Seattle to Buenos Aires?

Best airlines flying from Seattle to Buenos Aires

Compare and see reviews for airlines that fly from Seattle to Buenos Aires with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $1,036Free CancellationRating
7.2
11,035 reviews
Search American Airlines flights
DeltaPriceFrom $1,164Free CancellationRating
7.9
7,998 reviews
Search Delta flights
United AirlinesPriceFrom $1,200Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Buenos Aires?

Finding the right flight to Buenos Aires from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Buenos Aires quick and easy, saving you time and money.

Can I find flights from Seattle to Buenos Aires with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Buenos Aires from Seattle with this policy.

How can momondo help me find flights from Seattle to Buenos Aires?

momondo provides multiple filters to help you find the best flight to Buenos Aires from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Seattle to Buenos Aires right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Seattle to Buenos Aires flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Find better results for your trip to Argentina

Fly into one of these airports located in Buenos Aires

Airports listed have a maximum distance of 17.0 mi from Buenos Aires
Buenos Aires Jorge Newbery Airport
Buenos Aires Ministro Pistarini Airport