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Cheap flights from Seattle to Buenos Aires from $426

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 2/22. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
LATAM Airlines Logo
7:15 am - 10:30 amSEA-AEP
22h 15m2 stops
LATAM Airlines Logo
6:20 pm - 2:39 pmAEP-SEA
24h 19m2 stops
$1,030LATAM Airlines
Find Deal
Mon, Jan 26 - Tue, Mar 10
LATAM Airlines Logo
7:15 am - 7:40 pmSEA-AEP
31h 25m2 stops
LATAM Airlines Logo
5:15 pm - 12:20 pmAEP-SEA
24h 05m2 stops
$1,038LATAM Airlines
Find Deal
Thu, Feb 5 - Thu, Feb 19
LATAM Airlines Logo
7:35 am - 10:30 amSEA-AEP
21h 55m2 stops
LATAM Airlines Logo
2:55 pm - 2:54 pmAEP-SEA
28h 59m2 stops
$1,053LATAM Airlines
Find Deal
Wed, Jan 14 - Thu, Jan 22
LATAM Airlines Logo
7:15 am - 7:40 pmSEA-AEP
31h 25m2 stops
LATAM Airlines Logo
8:25 pm - 10:25 pmAEP-SEA
31h 00m2 stops
$1,055LATAM Airlines
Find Deal
Thu, Feb 5 - Sun, Feb 22
LATAM Airlines Logo
7:20 am - 7:40 amSEA-AEP
20h 20m2 stops
LATAM Airlines Logo
8:05 pm - 2:19 pmAEP-SEA
22h 14m2 stops
$1,058LATAM Airlines
Find Deal
Mon, Apr 13 - Mon, Apr 20
LATAM Airlines Logo
7:10 am - 10:30 amSEA-AEP
22h 20m2 stops
LATAM Airlines Logo
5:15 pm - 2:54 pmAEP-SEA
26h 39m2 stops
$1,083LATAM Airlines
Find Deal
Sun, Jan 18 - Sun, Jan 25
LATAM Airlines Logo
8:40 am - 10:30 amSEA-AEP
20h 50m2 stops
LATAM Airlines Logo
3:40 pm - 12:49 pmAEP-SEA
25h 09m2 stops
$1,093LATAM Airlines
Find Deal
Thu, Mar 5 - Sat, Mar 14
LATAM Airlines Logo
7:15 am - 10:30 amSEA-AEP
22h 15m2 stops
LATAM Airlines Logo
3:40 pm - 7:00 pmAEP-SEA
32h 20m2 stops
$1,108LATAM Airlines
Find Deal
Mon, Feb 2 - Thu, Feb 5
LATAM Airlines Logo
9:50 am - 10:30 amSEA-AEP
19h 40m2 stops
LATAM Airlines Logo
2:55 pm - 7:48 pmAEP-SEA
32h 53m2 stops
$1,111LATAM Airlines
Find Deal
Fri, Mar 6 - Fri, Mar 20
Multiple Airlines Logo
3:57 pm - 4:00 pmSEA-AEP
19h 03m2 stops
Multiple Airlines Logo
8:25 pm - 11:23 pmAEP-SEA
31h 58m2 stops
$1,116Multiple Airlines
Find Deal
Sun, Feb 8 - Sun, Feb 22

LATAM Airlines flights from Seattle to Buenos Aires Jorge Newbery Airport

Our best LATAM Airlines deals on Seattle to Buenos Aires Jorge Newbery Airport flight tickets
LATAM Airlines
Jan 26
SEA7:10 amSeattle/Tacoma Intl
22h 20m
2 stops
AEP10:30 amBuenos Aires Jorge Newbery
Mar 10
AEP5:15 pmBuenos Aires Jorge Newbery
23h 32m
2 stops
SEA12:47 pmSeattle/Tacoma Intl
$1,030
Find similar
LATAM Airlines
Feb 5
SEA7:15 amSeattle/Tacoma Intl
31h 25m
2 stops
AEP7:40 pmBuenos Aires Jorge Newbery
Feb 25
AEP5:15 pmBuenos Aires Jorge Newbery
26h 29m
2 stops
SEA2:44 pmSeattle/Tacoma Intl
$1,038
Find similar
LATAM Airlines
Mar 1
SEA9:50 amSeattle/Tacoma Intl
19h 40m
2 stops
AEP10:30 amBuenos Aires Jorge Newbery
Mar 8
AEP8:25 pmBuenos Aires Jorge Newbery
20h 22m
2 stops
SEA12:47 pmSeattle/Tacoma Intl
$1,044
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Buenos Aires Jorge Newbery Airport 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 November 26, 2025.
Use the filters below to find and compare flights from Seattle to Buenos Aires Jorge Newbery Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 1/26

7:15 am-10:30 am

2 stops22h 15m

Buenos Aires Jorge Newbery

Tue 3/10

6:20 pm-2:39 pm

2 stops24h 19m

$1,030

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Thu 2/5

7:15 am-7:40 pm

2 stops31h 25m

Buenos Aires Jorge Newbery

Thu 2/19

5:15 pm-12:20 pm

2 stops24h 05m

$1,038

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Wed 1/14

7:35 am-10:30 am

2 stops21h 55m

Buenos Aires Jorge Newbery

Thu 1/22

2:55 pm-2:54 pm

2 stops28h 59m

$1,053

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Thu 2/5

7:15 am-7:40 pm

2 stops31h 25m

Buenos Aires Jorge Newbery

Sun 2/22

8:25 pm-10:25 pm

2 stops31h 00m

$1,055

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 4/13

7:20 am-7:40 am

2 stops20h 20m

Buenos Aires Jorge Newbery

Mon 4/20

8:05 pm-2:19 pm

2 stops22h 14m

$1,058

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Sun 1/18

7:10 am-10:30 am

2 stops22h 20m

Buenos Aires Jorge Newbery

Sun 1/25

5:15 pm-2:54 pm

2 stops26h 39m

$1,083

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Thu 3/5

8:40 am-10:30 am

2 stops20h 50m

Buenos Aires Jorge Newbery

Sat 3/14

3:40 pm-12:49 pm

2 stops25h 09m

$1,093

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 2/2

7:15 am-10:30 am

2 stops22h 15m

Buenos Aires Jorge Newbery

Thu 2/5

3:40 pm-7:00 pm

2 stops32h 20m

$1,108

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Fri 3/6

9:50 am-10:30 am

2 stops19h 40m

Buenos Aires Jorge Newbery

Fri 3/20

2:55 pm-7:48 pm

2 stops32h 53m

$1,111

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Sun 2/8

3:57 pm-4:00 pm

2 stops19h 03m

Buenos Aires Jorge Newbery

Sun 2/22

8:25 pm-11:23 pm

2 stops31h 58m

$1,116

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Seattle to Buenos Aires Jorge Newbery Airport

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 day to depart on your flight to Buenos Aires Jorge Newbery Airport?

The cheapest day to depart from Seattle to Buenos Aires Jorge Newbery Airport is on a Wednesday. Travelers who choose to depart for Buenos Aires Jorge Newbery Airport on a Wednesday will often find tickets for as low as $1,227. The most expensive day to fly to Buenos Aires Jorge Newbery Airport is Saturday, with ticket prices averaging around $1,963.

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

Flying to Buenos Aires Jorge Newbery Airport from Seattle in the morning is the least expensive time of day to depart. momondo users have found prices as low as $1,265 when looking at flights departing in the morning. In the afternoon is when there is more demand to fly to Buenos Aires Jorge Newbery Airport, so prices are often more expensive at around $1,338 per ticket.

When to book flights from Seattle to Buenos Aires Jorge Newbery Airport

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

Cheap Seattle to Buenos Aires Jorge Newbery Airport (SEA to AEP) flight deals and tips

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

Fastest flight time

19h 03m

Direct flights

None
The fastest flight from Seattle to Buenos Aires Jorge Newbery Airport takes 19h 03m
There are no direct flights from Seattle to Buenos Aires Jorge Newbery Airport. There are no popular flight routes from Seattle to Buenos Aires Jorge Newbery Airport.
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  • How far is Seattle/Tacoma Intl to Buenos Aires Jorge Newbery by plane?

    The straight-line distance from Seattle/Tacoma Intl to Buenos Aires Jorge Newbery is 6909.8 mi. Flights usually cover this in 19h 03m, depending on flying conditions and air traffic around both airports.

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

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Buenos Aires Jorge Newbery Airport.

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

    The travel and health documents required for your trip to Buenos Aires Jorge Newbery Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Buenos Aires Jorge Newbery Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Buenos Aires for you.

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

Flights from Seattle to Buenos Aires with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once all potential Seattle to Buenos Aires flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are not ready to book a flight from Seattle to Buenos Aires now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Buenos Aires and let you know when they change.

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