Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Incheon Intl Airport to Seattle from $298

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Incheon Intl Airport to Seattle departing on 12/20. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

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

Trusted and free

Trusted and free

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

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Incheon Intl Airport to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Hawaiian Airlines Logo
8:35 pm - 1:45 pmICN-SEA
10h 10mnonstop
Hawaiian Airlines Logo
1:40 pm - 6:35 pmSEA-ICN
11h 55mnonstop
$461Hawaiian Airlines
Find Deal
Fri, Nov 21 - Sun, Nov 30
Hawaiian Airlines Logo
8:35 pm - 1:45 pmICN-SEA
10h 10mnonstop
Hawaiian Airlines Logo
1:40 pm - 6:35 pmSEA-ICN
11h 55mnonstop
$462Hawaiian Airlines
Find Deal
Sat, Jan 17 - Fri, Feb 6
Air Canada Logo
5:55 pm - 7:16 pmICN-SEA
18h 21m1 stop
Air Canada Logo
5:50 am - 4:00 pmSEA-ICN
17h 10m1 stop
$487Air Canada
Find Deal
Wed, Dec 17 - Sat, Feb 28
Air Canada Logo
6:55 pm - 7:16 pmICN-SEA
17h 21m1 stop
Air Canada Logo
5:50 am - 4:00 pmSEA-ICN
17h 10m1 stop
$488Air Canada
Find Deal
Tue, Dec 16 - Tue, Jan 6
Multiple Airlines Logo
6:55 pm - 10:46 pmICN-SEA
20h 51m1 stop
Multiple Airlines Logo
10:05 am - 10:25 pmSEA-ICN
19h 20m2 stops
$601Multiple Airlines
Find Deal
Tue, Dec 16 - Mon, Jan 5
Asiana Airlines Logo
9:00 pm - 1:55 pmICN-SEA
9h 55mnonstop
Asiana Airlines Logo
12:10 am - 5:20 amSEA-ICN
12h 10mnonstop
$602Asiana Airlines
Find Deal
Tue, Dec 2 - Mon, Dec 8
Multiple Airlines Logo
6:55 pm - 10:46 pmICN-SEA
20h 51m1 stop
Multiple Airlines Logo
10:05 am - 10:25 pmSEA-ICN
19h 20m2 stops
$603Multiple Airlines
Find Deal
Tue, Dec 16 - Tue, Jan 6
Asiana Airlines Logo
9:00 pm - 1:55 pmICN-SEA
9h 55mnonstop
Asiana Airlines Logo
12:10 am - 5:20 amSEA-ICN
12h 10mnonstop
$604Asiana Airlines
Find Deal
Tue, Dec 23 - Tue, Dec 30
Korean Air Logo
4:10 pm - 9:00 amICN-SEA
9h 50mnonstop
Korean Air Logo
11:00 am - 3:55 pmSEA-ICN
11h 55mnonstop
$612Korean Air
Find Deal
Tue, Dec 23 - Tue, Jan 13
Korean Air Logo
4:10 pm - 9:00 amICN-SEA
9h 50mnonstop
Korean Air Logo
11:00 am - 3:55 pmSEA-ICN
11h 55mnonstop
$613Korean Air
Find Deal
Thu, Dec 25 - Wed, Dec 31

Hawaiian Airlines flights from Incheon Intl Airport to Seattle

Our best Hawaiian Airlines deals on Incheon Intl Airport to Seattle flight tickets
Hawaiian Airlines
Nov 21
ICN8:35 pmIncheon Intl
10h 10m
SEA1:45 pmSeattle/Tacoma Intl
Nov 30
SEA1:40 pmSeattle/Tacoma Intl
11h 55m
ICN6:35 pmIncheon Intl
$461
Find similar
Hawaiian Airlines
Jan 17
ICN8:35 pmIncheon Intl
10h 10m
SEA1:45 pmSeattle/Tacoma Intl
Feb 6
SEA1:40 pmSeattle/Tacoma Intl
11h 55m
ICN6:35 pmIncheon Intl
$462
Find similar
Hawaiian Airlines
Nov 23
ICN8:35 pmIncheon Intl
10h 10m
SEA1:45 pmSeattle/Tacoma Intl
Dec 3
SEA1:40 pmSeattle/Tacoma Intl
11h 55m
ICN6:35 pmIncheon Intl
$465
Find similar

Asiana Airlines flights from Incheon Intl Airport to Seattle

Our best Asiana Airlines deals on Incheon Intl Airport to Seattle flight tickets
Asiana Airlines
Dec 2
ICN9:00 pmIncheon Intl
9h 55m
SEA1:55 pmSeattle/Tacoma Intl
Dec 8
SEA12:10 amSeattle/Tacoma Intl
12h 10m
ICN5:20 amIncheon Intl
$602
Find similar
Asiana Airlines
Nov 11
ICN9:00 pmIncheon Intl
9h 55m
SEA1:55 pmSeattle/Tacoma Intl
Nov 17
SEA12:10 amSeattle/Tacoma Intl
12h 10m
ICN5:20 amIncheon Intl
$603
Find similar
Asiana Airlines
Dec 23
ICN9:00 pmIncheon Intl
9h 55m
SEA1:55 pmSeattle/Tacoma Intl
Dec 30
SEA12:10 amSeattle/Tacoma Intl
12h 10m
ICN5:20 amIncheon Intl
$604
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Incheon Intl Airport to Seattle 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 6, 2025.
Use the filters below to find and compare flights from Incheon Intl Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 11/21

8:35 pm-1:45 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Sun 11/30

1:40 pm-6:35 pm

Nonstop11h 55m

$461

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sat 1/17

8:35 pm-1:45 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Fri 2/6

1:40 pm-6:35 pm

Nonstop11h 55m

$462

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Wed 12/17

5:55 pm-7:16 pm

1 stop18h 21m

Seattle/Tacoma Intl

Sat 2/28

5:50 am-4:00 pm

1 stop17h 10m

$487

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 12/16

6:55 pm-7:16 pm

1 stop17h 21m

Seattle/Tacoma Intl

Tue 1/6

5:50 am-4:00 pm

1 stop17h 10m

$488

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 12/16

6:55 pm-10:46 pm

1 stop20h 51m

Seattle/Tacoma Intl

Mon 1/5

10:05 am-10:25 pm

2 stops19h 20m

$601

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 12/2

9:00 pm-1:55 pm

Nonstop9h 55m

Seattle/Tacoma Intl

Mon 12/8

12:10 am-5:20 am

Nonstop12h 10m

$602

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 12/16

6:55 pm-10:46 pm

1 stop20h 51m

Seattle/Tacoma Intl

Tue 1/6

10:05 am-10:25 pm

2 stops19h 20m

$603

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 12/23

9:00 pm-1:55 pm

Nonstop9h 55m

Seattle/Tacoma Intl

Tue 12/30

12:10 am-5:20 am

Nonstop12h 10m

$604

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 12/23

4:10 pm-9:00 am

Nonstop9h 50m

Seattle/Tacoma Intl

Tue 1/13

11:00 am-3:55 pm

Nonstop11h 55m

$612

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 12/25

4:10 pm-9:00 am

Nonstop9h 50m

Seattle/Tacoma Intl

Wed 12/31

11:00 am-3:55 pm

Nonstop11h 55m

$613

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Seattle from

How to get the cheapest flight ticket from Incheon Intl Airport to Seattle

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 typical price of a round-trip flight between Incheon Intl Airport and Seattle?

What is the cheapest month to fly to Seattle?

In general, November is the cheapest month to fly from Incheon Intl Airport to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $629. If you don’t want to visit Seattle in November, then you should wait until May to fly from Incheon Intl Airport, when ticket prices are also cheap, with an average price of $633.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Incheon Intl Airport is on a Thursday. momondo users have found tickets for Thursday departures for as low as $745. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Saturday is the most expensive day to depart from Incheon Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $924.

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

Flying to Seattle from Incheon Intl Airport in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $788 when looking at flights departing in the afternoon. Flights to Seattle are more costly in the morning, with an average ticket price of $922. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

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

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Incheon Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $718 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Incheon Intl Airport for as low as $613 on momondo.

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

There are 4 cabin classes available to choose from on Incheon Intl to Seattle/Tacoma Intl 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 Incheon Intl Airport to Seattle flights?

You could potentially save up to 25% on your flight if you consider stops on a Incheon Intl Airport to Seattle flight.

How have Incheon Intl Airport to Seattle flight prices changed over time?

As of November 2025, prices for Incheon Intl Airport to Seattle flights are approximately 31% cheaper when compared to flights at the same time last year.

When to book flights from Incheon Intl Airport to Seattle

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

Cheap Incheon Intl Airport to Seattle (ICN to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Incheon Intl Airport to Seattle

Best Price Found

$407

Fastest flight time

9h 50m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from Incheon Intl Airport in the past 72 hours is $407. The best round-trip flight deal from Incheon Intl Airport to Seattle found on momondo in the last 72 hours is $533.
The fastest flight from Incheon Intl Airport to Seattle takes 9h 50m
Direct flights go from Incheon Intl Airport to Seattle every day.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)
Search flight deals

  • How far is Incheon Intl to Seattle/Tacoma Intl by plane?

    The distance between Incheon Intl and Seattle/Tacoma Intl is about 5192.0 mi. By plane, this route typically takes 9h 50m.

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

    Prices for flights from Incheon Intl Airport to Seattle/Tacoma Intl Airport refresh daily.

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

  • How old do you have to be to fly from Incheon Intl Airport to Seattle/Tacoma Intl 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 Incheon Intl Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents required for your trip to Seattle/Tacoma Intl 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 Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Incheon Intl Airport to Seattle?

  • What is the most popular airline from Incheon Intl Airport to Seattle?

Best airlines flying from Incheon Intl Airport to Seattle

Compare and see reviews for airlines that fly from Incheon Intl Airport to Seattle with momondo
Airline
Rating
Free Cancellation
Price
Asiana AirlinesPriceFrom $469Free CancellationRating
8.2
484 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $470Free CancellationRating
8.4
1,160 reviews
Search Korean Air flights
Air CanadaPriceFrom $472Free CancellationRating
7.1
10,413 reviews
Search Air Canada flights
Alaska AirlinesPriceFrom $476Free CancellationRating
8.0
11,243 reviews
Search Alaska Airlines flights
Hawaiian AirlinesPriceFrom $485Free CancellationRating
7.8
2,804 reviews
Search Hawaiian Airlines flights
DeltaPriceFrom $606Free CancellationRating
7.9
8,001 reviews
Search Delta flights

  • Korean Air Flights From Incheon Intl Airport to Seattle

    The lowest priced Korean Air flight from Incheon Intl Airport to Seattle from the last 72 hours was $470. Generally, Korean Air has 14 flights on this route every week with an average price of $732. Korean Air is rated 8.4/10 by our users.

  • Asiana Airlines Flights From Incheon Intl Airport to Seattle

    Asiana Airlines is also a popular choice for this route. Asiana Airlines flight deals for Incheon Intl Airport to Seattle start from as low as $469 round-trip, depending on your selected dates, with average Asiana Airlines deals seen on momondo around $675. Asiana Airlines operates 3 flights to Seattle from Incheon Intl Airport in an average week. Users have rated it 8.2/10 across 484 reviews.

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Puyallup
Marysville
Redmond
Tukwila
Lakewood
Federal Way
Fife
Cle Elum
Centralia
Kirkland
Westport
Shoreline

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seoul to Seattle. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Seoul to Seattle flights to just show those with flexible booking policies.

How can momondo help me find flights from Seoul to Seattle?

momondo provides multiple filters to help you find the best flight to Seattle from Seoul. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for Seoul to Seattle 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 Seattle 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
Sat 12/6
Sat 12/13
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States