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Cheap flights from Seattle to Buenos Aires from $435

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 5/17. 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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Find the cheapest flights from Seattle to Buenos Aires

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Seattle to Buenos Aires.
LATAM Airlines Logo
6:00 am - 5:55 amSEA-EZE
19h 55m2 stops
LATAM Airlines Logo
12:48 pm - 12:50 pmEZE-SEA
28h 02m2 stops
$1,067LATAM Airlines
Find Deal
jue., may. 1 - jue., may. 8
LATAM Airlines Logo
9:25 am - 5:00 pmSEA-AEP
27h 35m2 stops
LATAM Airlines Logo
2:55 pm - 9:56 pmAEP-SEA
35h 01m2 stops
$1,067LATAM Airlines
Find Deal
jue., may. 1 - jue., may. 8
Copa Airlines Logo
12:45 pm - 12:47 amSEA-EZE
32h 02m2 stops
Copa Airlines Logo
3:47 am - 12:59 amEZE-SEA
25h 12m2 stops
$1,099Copa Airlines
Find Deal
mar., abr. 29 - lun., may. 12
Copa Airlines Logo
7:33 pm - 4:09 amSEA-EZE
28h 36m2 stops
Copa Airlines Logo
2:20 am - 12:58 amEZE-SEA
26h 38m2 stops
$1,120Copa Airlines
Find Deal
vie., abr. 18 - mié., abr. 23
United Airlines Logo
8:52 am - 8:00 amSEA-EZE
19h 08m2 stops
United Airlines Logo
9:00 pm - 12:32 pmEZE-SEA
19h 32m1 stop
$1,175United Airlines
Find Deal
mié., sep. 10 - mar., sep. 16
Delta Logo
6:00 am - 9:45 amSEA-EZE
23h 45m1 stop
Delta Logo
8:10 pm - 2:45 pmEZE-SEA
22h 35m1 stop
$1,200Delta
Find Deal
lun., ago. 25 - vie., ago. 29
Delta Logo
6:00 am - 9:45 amSEA-EZE
23h 45m1 stop
Delta Logo
8:10 pm - 10:00 pmEZE-SEA
29h 50m1 stop
$1,206Delta
Find Deal
lun., jun. 2 - vie., jun. 6
United Airlines Logo
5:05 pm - 8:00 amSEA-EZE
34h 55m1 stop
United Airlines Logo
9:00 pm - 12:59 amEZE-SEA
31h 59m2 stops
$1,220United Airlines
Find Deal
lun., jun. 2 - vie., jun. 6
American Airlines Logo
12:24 am - 8:55 amSEA-EZE
28h 31m1 stop
American Airlines Logo
8:50 pm - 3:42 pmEZE-SEA
22h 52m2 stops
$1,352American Airlines
Find Deal
mar., may. 6 - mar., may. 13
American Airlines Logo
12:24 am - 8:55 amSEA-EZE
28h 31m1 stop
American Airlines Logo
8:50 pm - 11:07 pmEZE-SEA
30h 17m1 stop
$1,369American Airlines
Find Deal
mar., may. 6 - mar., may. 13

Copa Airlines flights from Seattle to Buenos Aires

Our best Copa Airlines deals on Seattle to Buenos Aires flight tickets
Copa Airlines
Apr 29
SEA12:45 pmSeattle/Tacoma Intl
32h 02m
2 stops
EZE12:47 amBuenos Aires Ministro Pistarini
May 12
EZE3:47 amBuenos Aires Ministro Pistarini
25h 12m
2 stops
SEA12:59 amSeattle/Tacoma Intl
Copa Airlines
Apr 18
SEA7:33 pmSeattle/Tacoma Intl
28h 36m
2 stops
EZE4:09 amBuenos Aires Ministro Pistarini
Apr 23
EZE2:20 amBuenos Aires Ministro Pistarini
26h 38m
2 stops
SEA12:58 amSeattle/Tacoma Intl
Copa Airlines
Apr 29
SEA7:33 pmSeattle/Tacoma Intl
22h 38m
2 stops
EZE10:11 pmBuenos Aires Ministro Pistarini
May 12
EZE3:47 amBuenos Aires Ministro Pistarini
25h 12m
2 stops
SEA12:59 amSeattle/Tacoma Intl

Aeromexico flights from Seattle to Buenos Aires

Our best Aeromexico deals on Seattle to Buenos Aires flight tickets
Aeromexico
Jun 30
SEA9:58 pmSeattle/Tacoma Intl
19h 27m
1 stop
EZE9:25 pmBuenos Aires Ministro Pistarini
Jul 6
EZE11:25 pmBuenos Aires Ministro Pistarini
18h 55m
1 stop
SEA2:20 pmSeattle/Tacoma Intl
Aeromexico
May 1
SEA9:31 amSeattle/Tacoma Intl
31h 54m
1 stop
EZE9:25 pmBuenos Aires Ministro Pistarini
May 8
EZE11:25 pmBuenos Aires Ministro Pistarini
24h 35m
1 stop
SEA8:00 pmSeattle/Tacoma Intl
Aeromexico
May 16
SEA9:34 amSeattle/Tacoma Intl
31h 51m
1 stop
EZE9:25 pmBuenos Aires Ministro Pistarini
May 23
EZE11:25 pmBuenos Aires Ministro Pistarini
24h 35m
1 stop
SEA8:00 pmSeattle/Tacoma Intl

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 typical price of a round-trip flight between Seattle and Buenos Aires?

What is the cheapest month to fly to Buenos Aires?

The cheapest month to fly to Buenos Aires from Seattle is in October. Flight prices, which tend to average around $1,243, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of October, then book flights to Buenos Aires from Seattle during November instead. Flights to Buenos Aires in November, while not as cheap as those in October, still average around $1,276.

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 13 weeks ahead of your departure date. In general, you can expect to find flights to Buenos Aires for around $1,404 when searching 13 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 $1,187 on momondo.

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

As of April 2025, prices for Seattle to Buenos Aires flights are approximately 21% 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

Best Price Found

$435

Fastest flight time

16h 00m

Direct flights

None

Airports in Buenos Aires

2 airports
The best one-way flight to Buenos Aires from Seattle in the past 72 hours is $435. The best round-trip flight deal from Seattle to Buenos Aires found on momondo in the last 72 hours is $1,067.
The fastest flight from Seattle to Buenos Aires takes 16h 00m
There are no direct flights from Seattle to Buenos Aires. Popular non-direct routes for this connection are Seattle/Tacoma Intl Airport - Buenos Aires Ministro Pistarini Airport and Seattle/Tacoma Intl Airport - Buenos Aires Jorge Newbery Airport.
There are 2 airports near Buenos Aires: Buenos Aires Ministro Pistarini (EZE), Buenos Aires Jorge Newbery (AEP)

  • 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 16h 00m 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 $1,100Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
LATAM AirlinesPriceFrom $1,113Free CancellationRating
7.5
1,754 reviews
Search LATAM Airlines flights
DeltaPriceFrom $1,133Free CancellationRating
8.0
7,897 reviews
Search Delta flights
United AirlinesPriceFrom $1,200Free CancellationRating
7.4
8,616 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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lun. 4/14

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