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Cheap flights from Seattle to South Korea from $370

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 South Korea departing on 10/30. 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.
Air Canada Logo
10:05 am - 5:10 pmSEA-ICN
14h 05m1 stop
Air Canada Logo
6:55 pm - 2:31 pmICN-SEA
12h 36m1 stop
$768Air Canada
Find Deal
jue., nov. 6 - mié., nov. 19
Hainan Airlines Logo
10:05 am - 9:00 pmSEA-ICN
41h 55m2 stops
Hainan Airlines Logo
10:10 pm - 8:05 amICN-SEA
26h 55m2 stops
$769Hainan Airlines
Find Deal
jue., nov. 13 - mié., nov. 26
Air Canada Logo
10:05 am - 5:10 pmSEA-ICN
14h 05m1 stop
Air Canada Logo
5:55 pm - 2:31 pmICN-SEA
13h 36m1 stop
$773Air Canada
Find Deal
mié., ene. 28 - mié., feb. 18
Asiana Airlines Logo
12:10 am - 5:20 amSEA-ICN
12h 10mnonstop
Asiana Airlines Logo
9:00 pm - 1:55 pmICN-SEA
9h 55mnonstop
$801Asiana Airlines
Find Deal
mar., nov. 4 - dom., nov. 16
Asiana Airlines Logo
12:10 am - 5:20 amSEA-ICN
12h 10mnonstop
Asiana Airlines Logo
9:00 pm - 1:55 pmICN-SEA
9h 55mnonstop
$802Asiana Airlines
Find Deal
lun., nov. 17 - mar., nov. 25
Korean Air Logo
9:32 pm - 5:40 pmSEA-ICN
27h 08m1 stop
Korean Air Logo
4:10 pm - 9:00 amICN-SEA
9h 50mnonstop
$812Korean Air
Find Deal
lun., nov. 3 - jue., nov. 6
Korean Air Logo
11:00 am - 3:55 pmSEA-ICN
11h 55mnonstop
Korean Air Logo
4:10 pm - 9:00 amICN-SEA
9h 50mnonstop
$815Korean Air
Find Deal
vie., dic. 5 - vie., dic. 12
Delta Logo
12:35 pm - 7:45 pmSEA-TAE
15h 10m1 stop
Delta Logo
7:40 am - 2:20 pmTAE-SEA
22h 40m1 stop
$979Delta
Find Deal
dom., mar. 8 - jue., mar. 12
Delta Logo
12:45 pm - 8:45 pmSEA-PUS
16h 00m1 stop
Delta Logo
7:00 am - 2:00 pmPUS-SEA
23h 00m1 stop
$982Delta
Find Deal
dom., abr. 19 - mié., abr. 22
China Airlines Logo
12:10 am - 10:50 amSEA-PUS
17h 40m1 stop
China Airlines Logo
11:50 am - 6:10 pmPUS-SEA
23h 20m1 stop
$1,209China Airlines
Find Deal
dom., dic. 7 - sáb., dic. 13

Air Canada flights from Seattle to South Korea

Our best Air Canada deals on Seattle to South Korea flight tickets
Air Canada
Nov 6
SEA10:05 amSeattle/Tacoma Intl
14h 05m
1 stop
ICN5:10 pmIncheon Intl
Nov 19
ICN6:55 pmIncheon Intl
12h 36m
1 stop
SEA2:31 pmSeattle/Tacoma Intl
$768
Find similar
Air Canada
Jan 28
SEA10:05 amSeattle/Tacoma Intl
14h 05m
1 stop
ICN5:10 pmIncheon Intl
Feb 18
ICN5:55 pmIncheon Intl
13h 36m
1 stop
SEA2:31 pmSeattle/Tacoma Intl
$773
Find similar
Air Canada
Jan 19
SEA10:05 amSeattle/Tacoma Intl
14h 05m
1 stop
ICN5:10 pmIncheon Intl
Feb 2
ICN6:55 pmIncheon Intl
20h 11m
1 stop
SEA10:06 pmSeattle/Tacoma Intl
$774
Find similar

Korean Air flights from Seattle to South Korea

Our best Korean Air deals on Seattle to South Korea flight tickets
Korean Air
Nov 3
SEA9:32 pmSeattle/Tacoma Intl
27h 08m
1 stop
ICN5:40 pmIncheon Intl
Nov 6
ICN4:10 pmIncheon Intl
9h 50m
SEA9:00 amSeattle/Tacoma Intl
$812
Find similar
Korean Air
Dec 5
SEA11:00 amSeattle/Tacoma Intl
11h 55m
ICN3:55 pmIncheon Intl
Dec 12
ICN4:10 pmIncheon Intl
9h 50m
SEA9:00 amSeattle/Tacoma Intl
$815
Find similar
Korean Air
Nov 4
SEA11:00 amSeattle/Tacoma Intl
11h 55m
ICN3:55 pmIncheon Intl
Nov 7
ICN4:10 pmIncheon Intl
9h 50m
SEA9:00 amSeattle/Tacoma Intl
$821
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to South Korea 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 octubre 22, 2025.
Use the filters below to find and compare flights from Seattle to South Korea that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

jue. 11/6

10:05 am-5:10 pm

1 stop14h 05m

Incheon Intl

mié. 11/19

6:55 pm-2:31 pm

1 stop12h 36m

$768

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

jue. 11/13

10:05 am-9:00 pm

2 stops41h 55m

Incheon Intl

mié. 11/26

10:10 pm-8:05 am

2 stops26h 55m

$769

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

mié. 1/28

10:05 am-5:10 pm

1 stop14h 05m

Incheon Intl

mié. 2/18

5:55 pm-2:31 pm

1 stop13h 36m

$773

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

mar. 11/4

12:10 am-5:20 am

Nonstop12h 10m

Incheon Intl

dom. 11/16

9:00 pm-1:55 pm

Nonstop9h 55m

$801

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

lun. 11/17

12:10 am-5:20 am

Nonstop12h 10m

Incheon Intl

mar. 11/25

9:00 pm-1:55 pm

Nonstop9h 55m

$802

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

lun. 11/3

9:32 pm-5:40 pm

1 stop27h 08m

Incheon Intl

jue. 11/6

4:10 pm-9:00 am

Nonstop9h 50m

$812

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

vie. 12/5

11:00 am-3:55 pm

Nonstop11h 55m

Incheon Intl

vie. 12/12

4:10 pm-9:00 am

Nonstop9h 50m

$815

SeattleDaegu

SEA - TAE

SEATAE

Seattle/Tacoma Intl

dom. 3/8

12:35 pm-7:45 pm

1 stop15h 10m

Daegu

jue. 3/12

7:40 am-2:20 pm

1 stop22h 40m

$979

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

dom. 4/19

12:45 pm-8:45 pm

1 stop16h 00m

Busan Gimhae

mié. 4/22

7:00 am-2:00 pm

1 stop23h 00m

$982

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

dom. 12/7

12:10 am-10:50 am

1 stop17h 40m

Busan Gimhae

sáb. 12/13

11:50 am-6:10 pm

1 stop23h 20m

$1,209

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to South Korea from

How to get the cheapest flight ticket from Seattle to South Korea

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 month to fly to South Korea?

If you aren’t able to travel to South Korea during the month of August, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $902.

What is the cheapest day to depart on your flight to South Korea?

On average, the least expensive day to fly to South Korea from Seattle is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $838. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to South Korea for around $1,020.

What is the cheapest time of day to depart on your flight to South Korea?

Flying to South Korea from Seattle in the evening is the least expensive time of day to depart. momondo users have found prices as low as $714 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,401 on average. Flights to South Korea from Seattle in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Seattle/Tacoma Intl to South Korea flight route?

Fly from Seattle/Tacoma Intl to Incheon Intl for the best Seattle/Tacoma Intl - South Korea flight prices

How far in advance should I book a flight to South Korea?

You are more likely to see cheaper flights to South Korea from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to South Korea for around $1,141 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to South Korea from Seattle for as low as $931 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to South Korea flights?

There are 3 cabin classes available to choose from on Seattle/Tacoma Intl to South Korea flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to South Korea flights?

No. A direct flight is the cheapest option for a flight between Seattle to South Korea.

Cheap Seattle to South Korea flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to South Korea

Best Price Found

$373

Fastest flight time

11h 45m

Direct flights

Every day

Airports in South Korea

1 airport
The best one-way flight to South Korea from Seattle in the past 72 hours is $373. The best round-trip flight deal from Seattle to South Korea found on momondo in the last 72 hours is $670.
The fastest flight from Seattle to South Korea takes 11h 45m
Direct flights go from Seattle to South Korea every day.
There is 1 airport near South Korea: Incheon Intl (ICN)
Search flight deals

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to South Korea?

    Prices for flights from Seattle/Tacoma Intl Airport to South Korea are refreshed on a daily basis.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to South Korea?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to South Korea?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to South Korea.

  • What documentation or ID do you need to fly to South Korea?

    The travel and health documents you'll need for your trip to South Korea may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at South Korea. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Seattle to South Korea?

Best airlines flying from Seattle to South Korea

Compare and see reviews for airlines that fly from Seattle to South Korea with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $167Free CancellationRating
7.9
7,979 reviews
Search Delta flights
Alaska AirlinesPriceFrom $190Free CancellationRating
8.0
11,150 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $282Free CancellationRating
7.4
8,989 reviews
Search United Airlines flights
Hawaiian AirlinesPriceFrom $282Free CancellationRating
7.8
2,788 reviews
Search Hawaiian Airlines flights
Air CanadaPriceFrom $678Free CancellationRating
7.1
10,338 reviews
Search Air Canada flights
Asiana AirlinesPriceFrom $802Free CancellationRating
8.2
485 reviews
Search Asiana Airlines flights
China AirlinesPriceFrom $835Free CancellationRating
8.3
772 reviews
Search China Airlines flights
Korean AirPriceFrom $851Free CancellationRating
8.4
1,153 reviews
Search Korean Air flights
EVA AirPriceFrom $978Free CancellationRating
8.4
1,254 reviews
Search EVA Air flights
Turkish AirlinesPriceFrom $1,007Free CancellationRating
7.3
4,022 reviews
Search Turkish Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to South Korea?

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 South Korea for you.

Can I find flights from Seattle to South Korea with flexible booking policies on momondo?

All flight searches from Seattle to South Korea on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Seattle to South Korea?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to South Korea.

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

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

An easier way to manage your South Korea trip

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vie. 11/21
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