Which layover airport has the shortest travel time from Seattle to Buenos Aires?

Flights connecting via Dallas (DFW) have the shortest average one-way travel time: 16h 00m.

What is the most punctual flight time for Seattle to Buenos Aires flights?

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

Which layover airport offers the lowest fares from Seattle to Buenos Aires?

Flights via Houston (IAH) offer the lowest average round-trip price of $1,295.

Which airport is the most popular layover for flights between Seattle and Buenos Aires?

Atlanta (ATL) was the most common stop: 58% of momondo users choosing 1-stop flights on this route connected there.

What is the cheapest airline that flies from Seattle/Tacoma Intl to Buenos Aires?

Air Canada is the most popular carrier operating from Seattle/Tacoma Intl to Buenos Aires

What day of the week experiences the fewest flight delays on this route?

Thursday is statistically the day of the week which experiences the fewest number of delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

How often are flights from Seattle to Buenos Aires delayed?

Historically, on average around 100% of flights between Seattle and Buenos Aires have experienced a delay on any given week. The average delay length over the past 12 months has been 99 minutes.

What airlines fly to Buenos Aires?

Delta, United Airlines and American Airlines are the top three most popular airlines that fly to Buenos Aires from Seattle according to our data. Delta is the first choice among our users, with 34% of people opting to fly with this airline when traveling to Buenos Aires. Keep in mind that there are 4 different airlines that fly to Buenos Aires on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest connection time from Seattle to Buenos Aires?

Dallas (DFW) has the shortest average layover time for this route: 1h 35m.

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?

As of March 2026, there are 4 operators available to choose from 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.

$407 Cheap Flights from Seattle to Buenos Aires in 2026

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Find the cheapest flights from Seattle to Buenos Aires

Round-trip

One-way

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Cheap round-trip flights

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7:55 am - 3:23 am

SEA

EZE

39h 28m

2 stops

1:10 pm - 9:49 pm

EZE

SEA

36h 39m

1 stop

$1,041Multiple Airlines

Sun, May 10 - Mon, May 18

7:55 am - 3:23 am

SEA

EZE

39h 28m

2 stops

1:10 pm - 9:49 pm

EZE

SEA

36h 39m

1 stop

$1,054Multiple Airlines

Sun, May 3 - Mon, May 18

7:55 am - 3:23 am

SEA

EZE

39h 28m

2 stops

1:10 pm - 9:49 pm

EZE

SEA

36h 39m

1 stop

$1,059Multiple Airlines

Sun, May 10 - Mon, May 18

11:06 am - 10:25 pm

SEA

EZE

31h 19m

2 stops

1:10 pm - 9:49 pm

EZE

SEA

36h 39m

1 stop

$1,077Multiple Airlines

Tue, May 5 - Mon, May 18

7:15 am - 8:15 am

SEA

EZE

21h 00m

2 stops

1:10 pm - 9:49 pm

EZE

SEA

36h 39m

1 stop

$1,081Multiple Airlines

Mon, May 4 - Mon, May 18

7:20 am - 2:50 pm

SEA

AEP

27h 30m

2 stops

3:45 pm - 7:33 pm

AEP

SEA

31h 48m

2 stops

$1,171LATAM Airlines

Wed, Jun 24 - Wed, Jul 1

8:25 am - 10:30 am

SEA

AEP

22h 05m

2 stops

8:05 pm - 12:58 pm

AEP

SEA

20h 53m

2 stops

$1,176LATAM Airlines

Wed, Aug 12 - Sun, Aug 23

10:15 am - 6:25 pm

SEA

AEP

28h 10m

2 stops

7:20 pm - 12:35 pm

AEP

SEA

21h 15m

2 stops

$1,189LATAM Airlines

Mon, May 11 - Wed, May 20

6:00 am - 7:40 am

SEA

AEP

21h 40m

2 stops

7:20 pm - 3:05 pm

AEP

SEA

23h 45m

2 stops

$1,194LATAM Airlines

Mon, May 4 - Tue, May 19

7:25 am - 7:40 am

SEA

AEP

20h 15m

2 stops

8:05 pm - 12:35 pm

AEP

SEA

20h 30m

2 stops

$1,232Delta

Thu, May 7 - Wed, May 20

LATAM Airlines flights from Seattle to Buenos Aires

Our best LATAM Airlines deals on Seattle to Buenos Aires flight tickets

LATAM Airlines

Jun 24

SEA8:25 amSeattle/Tacoma Intl

20h 55m

1 stop

EZE9:20 amBuenos Aires Ministro Pistarini

Jun 30

EZE3:55 amBuenos Aires Ministro Pistarini

24h 27m

2 stops

SEA12:22 amSeattle/Tacoma Intl

$1,157

LATAM Airlines

Jun 24

SEA7:20 amSeattle/Tacoma Intl

24h 10m

2 stops

EZE11:30 amBuenos Aires Ministro Pistarini

Jun 30

EZE3:55 amBuenos Aires Ministro Pistarini

24h 27m

2 stops

SEA12:22 amSeattle/Tacoma Intl

$1,171

LATAM Airlines

May 11

SEA10:15 amSeattle/Tacoma Intl

28h 10m

2 stops

AEP6:25 pmBuenos Aires Jorge Newbery

May 20

AEP7:20 pmBuenos Aires Jorge Newbery

21h 15m

2 stops

SEA12:35 pmSeattle/Tacoma Intl

$1,189

Copa Airlines flights from Seattle to Buenos Aires

Our best Copa Airlines deals on Seattle to Buenos Aires flight tickets

Copa Airlines

Aug 22

SEA6:51 pmSeattle/Tacoma Intl

27h 39m

2 stops

EZE2:30 amBuenos Aires Ministro Pistarini

Aug 31

EZE2:49 pmBuenos Aires Ministro Pistarini

35h 07m

2 stops

SEA9:56 pmSeattle/Tacoma Intl

$1,149

Copa Airlines

Apr 30

SEA1:21 pmSeattle/Tacoma Intl

29h 04m

2 stops

EZE10:25 pmBuenos Aires Ministro Pistarini

May 13

EZE5:25 amBuenos Aires Ministro Pistarini

22h 04m

2 stops

SEA11:29 pmSeattle/Tacoma Intl

$1,173

Copa Airlines

May 12

SEA7:36 pmSeattle/Tacoma Intl

25h 14m

2 stops

EZE12:50 amBuenos Aires Ministro Pistarini

May 19

EZE2:49 pmBuenos Aires Ministro Pistarini

32h 59m

2 stops

SEA7:48 pmSeattle/Tacoma Intl

$1,179

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Sun 5/10

7:55 am-3:23 am

2 stops39h 28m

Buenos Aires Ministro Pistarini

Mon 5/18

1:10 pm-9:49 pm

1 stop36h 39m

$1,041

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Sun 5/3

7:55 am-3:23 am

2 stops39h 28m

Buenos Aires Ministro Pistarini

Mon 5/18

1:10 pm-9:49 pm

1 stop36h 39m

$1,054

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Sun 5/10

7:55 am-3:23 am

2 stops39h 28m

Buenos Aires Ministro Pistarini

Mon 5/18

1:10 pm-9:49 pm

1 stop36h 39m

$1,059

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Tue 5/5

11:06 am-10:25 pm

2 stops31h 19m

Buenos Aires Ministro Pistarini

Mon 5/18

1:10 pm-9:49 pm

1 stop36h 39m

$1,077

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Mon 5/4

7:15 am-8:15 am

2 stops21h 00m

Buenos Aires Ministro Pistarini

Mon 5/18

1:10 pm-9:49 pm

1 stop36h 39m

$1,081

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Wed 6/24

7:20 am-2:50 pm

2 stops27h 30m

Buenos Aires Jorge Newbery

Wed 7/1

3:45 pm-7:33 pm

2 stops31h 48m

$1,171

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Wed 8/12

8:25 am-10:30 am

2 stops22h 05m

Buenos Aires Jorge Newbery

Sun 8/23

8:05 pm-12:58 pm

2 stops20h 53m

$1,176

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 5/11

10:15 am-6:25 pm

2 stops28h 10m

Buenos Aires Jorge Newbery

Wed 5/20

7:20 pm-12:35 pm

2 stops21h 15m

$1,189

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 5/4

6:00 am-7:40 am

2 stops21h 40m

Buenos Aires Jorge Newbery

Tue 5/19

7:20 pm-3:05 pm

2 stops23h 45m

$1,194

Quickest round-trip

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Thu 5/7

7:25 am-7:40 am

2 stops20h 15m

Buenos Aires Jorge Newbery

Wed 5/20

8:05 pm-12:35 pm

2 stops20h 30m

$1,232

Flights are sorted by cheapest round-trip flights first.

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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

Prices

Airlines

Delays

Layovers

What is the cheapest month to fly to Buenos Aires?

The cheapest month to fly to Buenos Aires from Seattle is in June. Flight prices, which tend to average around $1,147, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of June, then book flights to Buenos Aires from Seattle during March instead. Flights to Buenos Aires in March, while not as cheap as those in June, still average around $1,218.

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

You could potentially save up to 15% 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?

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

Fastest flight time	18h 48m
Direct flights	None

The fastest flight from Seattle to Buenos Aires takes 18h 48m

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 18h 48m 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?
As of March 2026, there are 4 operators available to choose from 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?
Based on momondo bookings for flights between Seattle and Buenos Aires, the leading airline is Delta, making up 40% of the total bookings. Other popular airlines include American Airlines with 25%, United Airlines with 23%, and LATAM Airlines with 13%.

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
Delta	PriceFrom $297	Free Cancellation	Rating 7.9 8,292 reviews	Search Delta flights
LATAM Airlines	PriceFrom $696	Free Cancellation	Rating 7.4 1,918 reviews	Search LATAM Airlines flights
American Airlines	PriceFrom $1,036	Free Cancellation	Rating 7.1 11,465 reviews	Search American Airlines flights
United Airlines	PriceFrom $1,095	Free Cancellation	Rating 7.4 9,428 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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Cheap flights from Seattle to Buenos Aires from $407

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 4/14. 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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How to get the cheapest flight ticket from Seattle to Buenos Aires

What is the cheapest month to fly to Buenos Aires?

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

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

What is the cheapest airline that flies from Seattle/Tacoma Intl to Buenos Aires?

What airlines fly to Buenos Aires?

How often are flights from Seattle to Buenos Aires delayed?

What is the most punctual flight time for Seattle to Buenos Aires flights?

What day of the week experiences the fewest flight delays on this route?

Which airport is the most popular layover for flights between Seattle and Buenos Aires?

Which layover airport offers the lowest fares from Seattle to Buenos Aires?

Which layover airport has the shortest travel time from Seattle to Buenos Aires?

Which layover airport has the shortest connection time from Seattle to Buenos Aires?

When to book flights from Seattle to Buenos Aires

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

Fastest flight time

Direct flights

Best airlines flying from Seattle to Buenos Aires

Compare and see reviews for airlines that fly from Seattle to Buenos Aires with momondo

Why use momondo?

An easier way to manage your Buenos Aires trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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

Fly your favorite airline to Buenos Aires

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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List of cabin classes available on flights landing in Buenos Aires. Availability may vary depending on flight origin and airline.

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