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Cheap flights from Seattle to Buenos Aires from $382

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 9/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Seattle to Buenos Aires

Cheap round-trip flights

Enter your travel dates to find the best prices.
GOL Logo
8:47 pm - 1:00 pm
SEA
-
AEP
36h 13m
2 stops
GOL Logo
3:40 am - 12:20 am
AEP
-
SEA
24h 40m
2 stops
$1,178GOL
Sat, Aug 22 - Sun, Aug 30
Multiple Airlines Logo
11:00 pm - 5:40 am
SEA
-
AEP
26h 40m
3 stops
Multiple Airlines Logo
12:50 pm - 10:42 pm
AEP
-
SEA
37h 52m
3 stops
$1,210Multiple Airlines
Thu, Sep 17 - Wed, Sep 23
GOL Logo
8:21 pm - 1:00 pm
SEA
-
AEP
36h 39m
2 stops
GOL Logo
3:40 am - 12:20 am
AEP
-
SEA
24h 40m
2 stops
$1,215GOL
Wed, Aug 26 - Sun, Aug 30
Multiple Airlines Logo
6:00 am - 8:30 am
SEA
-
AEP
21h 30m
2 stops
Multiple Airlines Logo
5:35 pm - 2:47 pm
AEP
-
SEA
26h 12m
2 stops
$1,225Multiple Airlines
Wed, Nov 11 - Wed, Nov 25
LATAM Airlines Logo
2:30 pm - 4:00 pm
SEA
-
AEP
21h 30m
2 stops
LATAM Airlines Logo
3:50 pm - 12:30 pm
AEP
-
SEA
24h 40m
2 stops
$1,230LATAM Airlines
Thu, Oct 8 - Mon, Oct 26
Multiple Airlines Logo
7:45 am - 5:30 pm
SEA
-
AEP
29h 45m
2 stops
Multiple Airlines Logo
10:30 am - 8:59 pm
AEP
-
SEA
39h 29m
2 stops
$1,234Multiple Airlines
Sat, Oct 31 - Wed, Nov 11
Multiple Airlines Logo
7:45 am - 5:30 pm
SEA
-
AEP
29h 45m
2 stops
Multiple Airlines Logo
4:40 pm - 8:59 pm
AEP
-
SEA
33h 19m
2 stops
$1,240Multiple Airlines
Sat, Oct 31 - Sun, Nov 8
Multiple Airlines Logo
11:00 pm - 5:40 am
SEA
-
AEP
26h 40m
3 stops
Multiple Airlines Logo
9:35 am - 10:42 pm
AEP
-
SEA
41h 07m
3 stops
$1,243Multiple Airlines
Thu, Sep 24 - Sun, Sep 27
LATAM Airlines Logo
2:30 pm - 4:00 pm
SEA
-
AEP
21h 30m
2 stops
LATAM Airlines Logo
8:05 pm - 1:00 pm
AEP
-
SEA
21h 55m
2 stops
$1,262LATAM Airlines
Mon, Oct 5 - Wed, Dec 2
Multiple Airlines Logo
11:00 pm - 5:40 am
SEA
-
AEP
26h 40m
3 stops
Multiple Airlines Logo
3:55 pm - 2:37 pm
AEP
-
SEA
27h 42m
3 stops
$1,273Multiple Airlines
Mon, Oct 5 - Wed, Dec 2

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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
Oct 8
SEA2:30 pmSeattle/Tacoma Intl
21h 30m
2 stops
AEP4:00 pmBuenos Aires Jorge Newbery
Oct 26
AEP3:50 pmBuenos Aires Jorge Newbery
24h 40m
2 stops
SEA12:30 pmSeattle/Tacoma Intl
$1,230
LATAM Airlines
Oct 5
SEA2:30 pmSeattle/Tacoma Intl
21h 30m
2 stops
AEP4:00 pmBuenos Aires Jorge Newbery
Dec 2
AEP8:05 pmBuenos Aires Jorge Newbery
21h 55m
2 stops
SEA1:00 pmSeattle/Tacoma Intl
$1,262
LATAM Airlines
Aug 17
SEA9:59 amSeattle/Tacoma Intl
24h 51m
2 stops
AEP2:50 pmBuenos Aires Jorge Newbery
Sep 3
AEP3:45 pmBuenos Aires Jorge Newbery
34h 20m
2 stops
SEA10:05 pmSeattle/Tacoma Intl
$1,298

Delta flights from Seattle to Buenos Aires Jorge Newbery Airport

Our best Delta deals on Seattle to Buenos Aires Jorge Newbery Airport flight tickets
Delta
Oct 8
SEA7:32 amSeattle/Tacoma Intl
28h 28m
2 stops
AEP4:00 pmBuenos Aires Jorge Newbery
Oct 29
AEP5:35 pmBuenos Aires Jorge Newbery
22h 42m
2 stops
SEA12:17 pmSeattle/Tacoma Intl
$1,280
Delta
Oct 9
SEA9:35 pmSeattle/Tacoma Intl
30h 05m
2 stops
AEP7:40 amBuenos Aires Jorge Newbery
Oct 27
AEP5:35 pmBuenos Aires Jorge Newbery
25h 15m
2 stops
SEA2:50 pmSeattle/Tacoma Intl
$1,364
Delta
Oct 9
SEA2:30 pmSeattle/Tacoma Intl
21h 30m
2 stops
AEP4:00 pmBuenos Aires Jorge Newbery
Oct 24
AEP3:45 pmBuenos Aires Jorge Newbery
24h 45m
2 stops
SEA12:30 pmSeattle/Tacoma Intl
$1,448

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 July 11, 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

Cheapest round-trip

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Sat 8/22

8:47 pm-1:00 pm

2 stops36h 13m

Buenos Aires Jorge Newbery

Sun 8/30

3:40 am-12:20 am

2 stops24h 40m

$1,178

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Thu 9/17

11:00 pm-5:40 am

3 stops26h 40m

Buenos Aires Jorge Newbery

Wed 9/23

12:50 pm-10:42 pm

3 stops37h 52m

$1,210

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Wed 8/26

8:21 pm-1:00 pm

2 stops36h 39m

Buenos Aires Jorge Newbery

Sun 8/30

3:40 am-12:20 am

2 stops24h 40m

$1,215

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Wed 11/11

6:00 am-8:30 am

2 stops21h 30m

Buenos Aires Jorge Newbery

Wed 11/25

5:35 pm-2:47 pm

2 stops26h 12m

$1,225

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Thu 10/8

2:30 pm-4:00 pm

2 stops21h 30m

Buenos Aires Jorge Newbery

Mon 10/26

3:50 pm-12:30 pm

2 stops24h 40m

$1,230

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Sat 10/31

7:45 am-5:30 pm

2 stops29h 45m

Buenos Aires Jorge Newbery

Wed 11/11

10:30 am-8:59 pm

2 stops39h 29m

$1,234

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Sat 10/31

7:45 am-5:30 pm

2 stops29h 45m

Buenos Aires Jorge Newbery

Sun 11/8

4:40 pm-8:59 pm

2 stops33h 19m

$1,240

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Thu 9/24

11:00 pm-5:40 am

3 stops26h 40m

Buenos Aires Jorge Newbery

Sun 9/27

9:35 am-10:42 pm

3 stops41h 07m

$1,243
Quickest round-trip

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 10/5

2:30 pm-4:00 pm

2 stops21h 30m

Buenos Aires Jorge Newbery

Wed 12/2

8:05 pm-1:00 pm

2 stops21h 55m

$1,262

SeattleBuenos Aires

SEA - AEP

SEAAEP

Seattle/Tacoma Intl

Mon 10/5

11:00 pm-5:40 am

3 stops26h 40m

Buenos Aires Jorge Newbery

Wed 12/2

3:55 pm-2:37 pm

3 stops27h 42m

$1,273

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 55m

Direct flights

None
The fastest flight from Seattle to Buenos Aires Jorge Newbery Airport takes 19h 55m
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

Frequently asked questions about flying from Seattle to Buenos Aires Jorge Newbery Airport

  • 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 55m, 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.

Frequently asked questions about flying from Seattle to Buenos Aires Jorge Newbery Airport

  • 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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