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 has the shortest connection time from Seattle to Buenos Aires?

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

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

Flights via Houston (IAH) offer the lowest average round-trip price of $1,095.

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

Atlanta (ATL) was the most common stop: 64% of momondo users choosing 1-stop flights on this route connected there.

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 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.

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 airlines fly to Buenos Aires?

Delta, American Airlines and LATAM 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 43% 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.

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 May 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.

$416 Cheap Flights from Seattle to Buenos Aires in 2026

Q: What is the typical price of a round-trip flight between Seattle and Buenos Aires?

Prices are currently low for flights on this route. Typical prices usually range from $2,298 to $1,312. The lowest price recently found on this route was $947.

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Seattle to Buenos Aires

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:25 am - 9:40 am

SEA

EZE

21h 15m

1 stop

1:10 pm - 10:00 am

EZE

SEA

24h 50m

1 stop

$947LATAM Airlines

Mon, Jun 15 - Mon, Jun 22

8:00 am - 9:40 am

SEA

EZE

21h 40m

1 stop

3:55 am - 9:59 pm

EZE

SEA

22h 04m

2 stops

$948LATAM Airlines

Mon, Aug 17 - Wed, Sep 2

8:25 am - 9:40 am

SEA

EZE

21h 15m

1 stop

10:40 pm - 7:04 pm

EZE

SEA

24h 24m

2 stops

$951LATAM Airlines

Mon, Jun 15 - Mon, Jun 22

8:00 am - 9:40 am

SEA

EZE

21h 40m

1 stop

7:21 pm - 2:43 pm

EZE

SEA

23h 22m

2 stops

$961LATAM Airlines

Sat, Aug 22 - Mon, Aug 31

8:25 am - 9:40 am

SEA

EZE

21h 15m

1 stop

7:21 pm - 1:00 pm

EZE

SEA

21h 39m

2 stops

$965LATAM Airlines

Fri, Oct 9 - Thu, Oct 29

8:25 am - 9:40 am

SEA

EZE

21h 15m

1 stop

7:35 am - 2:50 pm

EZE

SEA

35h 15m

2 stops

$967Delta

Tue, Jun 23 - Sun, Jul 5

7:05 am - 8:00 am

SEA

EZE

20h 55m

1 stop

9:00 pm - 11:10 pm

EZE

SEA

30h 10m

2 stops

$971United Airlines

Mon, Jun 22 - Mon, Jun 29

11:56 pm - 8:00 am

SEA

EZE

28h 04m

1 stop

9:00 pm - 2:42 pm

EZE

SEA

21h 42m

1 stop

$980United Airlines

Sun, Aug 23 - Mon, Aug 31

4:02 pm - 4:00 pm

SEA

AEP

43h 58m

2 stops

5:05 pm - 9:33 am

AEP

SEA

44h 28m

2 stops

$997Multiple Airlines

Sun, Oct 11 - Sun, Oct 25

8:12 am - 4:00 pm

SEA

AEP

27h 48m

2 stops

8:40 am - 3:33 pm

AEP

SEA

34h 53m

2 stops

$1,015Multiple Airlines

Tue, Jun 16 - Tue, Jun 23

Delta flights from Seattle to Buenos Aires

Our best Delta deals on Seattle to Buenos Aires flight tickets

Delta

Jun 23

SEA8:25 amSeattle/Tacoma Intl

21h 15m

1 stop

EZE9:40 amBuenos Aires Ministro Pistarini

Jul 5

EZE7:35 amBuenos Aires Ministro Pistarini

35h 15m

2 stops

SEA2:50 pmSeattle/Tacoma Intl

$967

Delta

Jun 8

SEA8:40 amSeattle/Tacoma Intl

21h 00m

2 stops

EZE9:40 amBuenos Aires Ministro Pistarini

Jun 22

EZE10:40 pmBuenos Aires Ministro Pistarini

20h 15m

2 stops

SEA2:55 pmSeattle/Tacoma Intl

$1,021

Delta

Jun 23

SEA8:25 amSeattle/Tacoma Intl

21h 15m

1 stop

EZE9:40 amBuenos Aires Ministro Pistarini

Jul 5

EZE1:10 pmBuenos Aires Ministro Pistarini

24h 50m

1 stop

SEA10:00 amSeattle/Tacoma Intl

$1,027

United Airlines flights from Seattle to Buenos Aires

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

United Airlines

Jun 22

SEA7:05 amSeattle/Tacoma Intl

20h 55m

1 stop

EZE8:00 amBuenos Aires Ministro Pistarini

Jun 29

EZE9:00 pmBuenos Aires Ministro Pistarini

30h 10m

2 stops

SEA11:10 pmSeattle/Tacoma Intl

$971

United Airlines

Aug 23

SEA11:56 pmSeattle/Tacoma Intl

28h 04m

1 stop

EZE8:00 amBuenos Aires Ministro Pistarini

Aug 31

EZE9:00 pmBuenos Aires Ministro Pistarini

21h 42m

1 stop

SEA2:42 pmSeattle/Tacoma Intl

$980

United Airlines

Jun 21

SEA2:36 pmSeattle/Tacoma Intl

37h 24m

2 stops

EZE8:00 amBuenos Aires Ministro Pistarini

Jun 29

EZE9:00 pmBuenos Aires Ministro Pistarini

26h 03m

2 stops

SEA7:03 pmSeattle/Tacoma Intl

$990

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Mon 6/15

8:25 am-9:40 am

1 stop21h 15m

Buenos Aires Ministro Pistarini

Mon 6/22

1:10 pm-10:00 am

1 stop24h 50m

$947

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Mon 8/17

8:00 am-9:40 am

1 stop21h 40m

Buenos Aires Ministro Pistarini

Wed 9/2

3:55 am-9:59 pm

2 stops22h 04m

$948

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Mon 6/15

8:25 am-9:40 am

1 stop21h 15m

Buenos Aires Ministro Pistarini

Mon 6/22

10:40 pm-7:04 pm

2 stops24h 24m

$951

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Sat 8/22

8:00 am-9:40 am

1 stop21h 40m

Buenos Aires Ministro Pistarini

Mon 8/31

7:21 pm-2:43 pm

2 stops23h 22m

$961

Quickest round-trip

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Fri 10/9

8:25 am-9:40 am

1 stop21h 15m

Buenos Aires Ministro Pistarini

Thu 10/29

7:21 pm-1:00 pm

2 stops21h 39m

$965

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Tue 6/23

8:25 am-9:40 am

1 stop21h 15m

Buenos Aires Ministro Pistarini

Sun 7/5

7:35 am-2:50 pm

2 stops35h 15m

$967

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Mon 6/22

7:05 am-8:00 am

1 stop20h 55m

Buenos Aires Ministro Pistarini

Mon 6/29

9:00 pm-11:10 pm

2 stops30h 10m

$971

SeattleBuenos Aires

SEA - EZE

SEAEZE

Seattle/Tacoma Intl

Sun 8/23

11:56 pm-8:00 am

1 stop28h 04m

Buenos Aires Ministro Pistarini

Mon 8/31

9:00 pm-2:42 pm

1 stop21h 42m

$980

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Sun 10/11

4:02 pm-4:00 pm

2 stops43h 58m

Buenos Aires Jorge Newbery

Sun 10/25

5:05 pm-9:33 am

2 stops44h 28m

$997

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Tue 6/16

8:12 am-4:00 pm

2 stops27h 48m

Buenos Aires Jorge Newbery

Tue 6/23

8:40 am-3:33 pm

2 stops34h 53m

$1,015

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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 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 August. Flight prices, which tend to average around $157, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of August, then book flights to Buenos Aires from Seattle during March instead. Flights to Buenos Aires in March, while not as cheap as those in August, still average around $159.

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

You could potentially save up to 32% 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 40m
Direct flights	None

The fastest flight from Seattle to Buenos Aires takes 18h 40m

There are no direct flights from Seattle to Buenos Aires. There are no popular flight routes from Seattle to Buenos Aires.

Search flight deals

Frequently asked questions about flying from Seattle to Buenos Aires

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 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?
As of May 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 37% of the total bookings. Other popular airlines include American Airlines with 26%, United Airlines with 22%, and LATAM Airlines with 15%.

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
United Airlines	PriceFrom $337	Free Cancellation	Rating 7.4 9,684 reviews	Search United Airlines flights
LATAM Airlines	PriceFrom $696	Free Cancellation	Rating 7.4 1,918 reviews	Search LATAM Airlines flights
Delta	PriceFrom $964	Free Cancellation	Rating 7.9 8,458 reviews	Search Delta flights
American Airlines	PriceFrom $1,075	Free Cancellation	Rating 7.1 11,667 reviews	Search American 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.

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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Fri 6/5

Fri 6/12

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Argentina

Nearby airports

Airlines

Cabin classes

Other Argentina destinations

Other flights from Seattle

Complete your trip

Feeling lucky

Fly into one of these airports located in Buenos Aires

Buenos Aires Jorge Newbery Airport

Buenos Aires Ministro Pistarini Airport

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 7/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Seattle to Buenos Aires

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Delta flights from Seattle to Buenos Aires

Our best Delta deals on Seattle to Buenos Aires flight tickets

United Airlines flights from Seattle to Buenos Aires

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

momondo Fare Finder

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

See travel insights to Buenos Aires from

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

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?

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

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

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

Frequently asked questions about flying 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

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

Cabin classes currently available on flights to Buenos Aires

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

Popular cities in Argentina

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Seattle

According to popular flight searches on momondo this year

Complete your trip to Buenos Aires

Explore popular destinations other users love

According to popular flight searches on momondo this year