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Cheap flights from Seattle to Buenos Aires from $376

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 5/1. 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.
Multiple Airlines Logo
6:25 am - 7:40 am
SEA
-
AEP
21h 15m
2 stops
Multiple Airlines Logo
7:20 pm - 8:50 pm
AEP
-
SEA
29h 30m
2 stops
$1,039Multiple Airlines
Thu, Apr 23 - Wed, May 6
LATAM Airlines Logo
7:25 am - 7:40 am
SEA
-
AEP
20h 15m
2 stops
LATAM Airlines Logo
8:05 pm - 2:42 pm
AEP
-
SEA
22h 37m
2 stops
$1,089LATAM Airlines
Tue, Apr 21 - Tue, May 5
LATAM Airlines Logo
7:25 am - 7:40 am
SEA
-
AEP
20h 15m
2 stops
LATAM Airlines Logo
8:05 pm - 2:19 pm
AEP
-
SEA
22h 14m
2 stops
$1,117LATAM Airlines
Mon, Jun 1 - Mon, Jun 8
Multiple Airlines Logo
5:12 pm - 4:00 pm
SEA
-
AEP
18h 48m
2 stops
Multiple Airlines Logo
3:45 pm - 2:43 pm
AEP
-
SEA
26h 58m
2 stops
$1,122Multiple Airlines
Mon, Aug 17 - Mon, Aug 24
LATAM Airlines Logo
9:40 am - 2:40 pm
SEA
-
AEP
25h 00m
2 stops
LATAM Airlines Logo
3:45 pm - 9:48 pm
AEP
-
SEA
34h 03m
2 stops
$1,125LATAM Airlines
Mon, Mar 16 - Tue, Mar 31
LATAM Airlines Logo
2:30 pm - 4:00 pm
SEA
-
AEP
21h 30m
2 stops
LATAM Airlines Logo
8:05 pm - 12:58 pm
AEP
-
SEA
20h 53m
2 stops
$1,127LATAM Airlines
Sat, Aug 22 - Mon, Aug 31
LATAM Airlines Logo
2:30 pm - 6:30 pm
SEA
-
AEP
24h 00m
2 stops
LATAM Airlines Logo
8:05 pm - 12:58 pm
AEP
-
SEA
20h 53m
2 stops
$1,129LATAM Airlines
Sat, Aug 22 - Mon, Aug 31
Multiple Airlines Logo
8:00 am - 6:40 pm
SEA
-
AEP
30h 40m
2 stops
Multiple Airlines Logo
3:40 pm - 10:16 pm
AEP
-
SEA
34h 36m
3 stops
$1,134Multiple Airlines
Wed, Mar 18 - Wed, Mar 25
Multiple Airlines Logo
8:09 am - 9:30 pm
SEA
-
AEP
33h 21m
2 stops
Multiple Airlines Logo
8:40 am - 2:42 pm
AEP
-
SEA
34h 02m
2 stops
$1,135Multiple Airlines
Mon, Aug 10 - Tue, Aug 18
LATAM Airlines Logo
8:25 am - 12:00 pm
SEA
-
AEP
23h 35m
2 stops
LATAM Airlines Logo
5:35 pm - 2:43 pm
AEP
-
SEA
25h 08m
2 stops
$1,137LATAM Airlines
Fri, Aug 28 - Sun, Sep 6

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
Apr 21
SEA7:25 amSeattle/Tacoma Intl
20h 15m
2 stops
AEP7:40 amBuenos Aires Jorge Newbery
May 5
AEP8:05 pmBuenos Aires Jorge Newbery
22h 37m
2 stops
SEA2:42 pmSeattle/Tacoma Intl
$1,089
LATAM Airlines
Mar 16
SEA9:40 amSeattle/Tacoma Intl
25h 00m
2 stops
AEP2:40 pmBuenos Aires Jorge Newbery
Mar 31
AEP3:45 pmBuenos Aires Jorge Newbery
34h 03m
2 stops
SEA9:48 pmSeattle/Tacoma Intl
$1,125
LATAM Airlines
May 6
SEA1:45 pmSeattle/Tacoma Intl
22h 15m
2 stops
AEP4:00 pmBuenos Aires Jorge Newbery
May 22
AEP7:20 pmBuenos Aires Jorge Newbery
23h 45m
2 stops
SEA3:05 pmSeattle/Tacoma Intl
$1,129

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 March 1, 2026.
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

Thu 4/23

6:25 am-7:40 am

2 stops21h 15m

Buenos Aires Jorge Newbery

Wed 5/6

7:20 pm-8:50 pm

2 stops29h 30m

$1,039

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Tue 4/21

7:25 am-7:40 am

2 stops20h 15m

Buenos Aires Jorge Newbery

Tue 5/5

8:05 pm-2:42 pm

2 stops22h 37m

$1,089

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 6/1

7:25 am-7:40 am

2 stops20h 15m

Buenos Aires Jorge Newbery

Mon 6/8

8:05 pm-2:19 pm

2 stops22h 14m

$1,117

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 8/17

5:12 pm-4:00 pm

2 stops18h 48m

Buenos Aires Jorge Newbery

Mon 8/24

3:45 pm-2:43 pm

2 stops26h 58m

$1,122

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 3/16

9:40 am-2:40 pm

2 stops25h 00m

Buenos Aires Jorge Newbery

Tue 3/31

3:45 pm-9:48 pm

2 stops34h 03m

$1,125

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Sat 8/22

2:30 pm-4:00 pm

2 stops21h 30m

Buenos Aires Jorge Newbery

Mon 8/31

8:05 pm-12:58 pm

2 stops20h 53m

$1,127

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Sat 8/22

2:30 pm-6:30 pm

2 stops24h 00m

Buenos Aires Jorge Newbery

Mon 8/31

8:05 pm-12:58 pm

2 stops20h 53m

$1,129

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Wed 3/18

8:00 am-6:40 pm

2 stops30h 40m

Buenos Aires Jorge Newbery

Wed 3/25

3:40 pm-10:16 pm

3 stops34h 36m

$1,134

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 8/10

8:09 am-9:30 pm

2 stops33h 21m

Buenos Aires Jorge Newbery

Tue 8/18

8:40 am-2:42 pm

2 stops34h 02m

$1,135

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Fri 8/28

8:25 am-12:00 pm

2 stops23h 35m

Buenos Aires Jorge Newbery

Sun 9/6

5:35 pm-2:43 pm

2 stops25h 08m

$1,137

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 43m

Direct flights

None
The fastest flight from Seattle to Buenos Aires Jorge Newbery Airport takes 19h 43m
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.
Search flight deals

  • 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 43m, 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.

  • How do I get Price Alerts for flights from Seattle to Buenos Aires Jorge Newbery Airport?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Seattle from Buenos Aires Jorge Newbery Airport. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Seattle to Buenos Aires Jorge Newbery Airport with momondo?

    Leverage our AI within our “Price Forecast” tool, which predicts if it’s better to book now or wait until prices decrease. You can strategically pick the best days to fly and save money on your trip by using our “Price Calendar” tool. “Explore” shows an overview of how much it costs to fly to anywhere from a selected city or airport. Our “Discover” content is a great option for travel inspiration and money-saving tips, while “Price Alerts” will update you when prices change, so you can book when fares are right.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

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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