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Cheap flights from Incheon Intl Airport to Seattle from $289

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 1/24. 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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Find the cheapest flights from Incheon Intl Airport to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
5:55 pm - 2:31 pmICN-SEA
13h 36m1 stop
Air Canada Logo
10:05 am - 5:10 pmSEA-ICN
14h 05m1 stop
$462Air Canada
Find Deal
Sun, Feb 1 - Sun, Feb 15
Air Canada Logo
5:55 pm - 10:06 pmICN-SEA
21h 11m1 stop
Air Canada Logo
8:00 pm - 4:00 pmSEA-ICN
27h 00m1 stop
$463Air Canada
Find Deal
Fri, Jan 30 - Fri, Feb 13
Air Canada Logo
5:55 pm - 2:31 pmICN-SEA
13h 36m1 stop
Air Canada Logo
5:50 am - 5:10 pmSEA-ICN
18h 20m1 stop
$464Air Canada
Find Deal
Fri, Feb 6 - Wed, Feb 18
Air Canada Logo
5:55 pm - 2:31 pmICN-SEA
13h 36m1 stop
Air Canada Logo
5:50 am - 4:00 pmSEA-ICN
17h 10m1 stop
$476Air Canada
Find Deal
Wed, Dec 24 - Thu, Jan 8
Air Canada Logo
6:55 pm - 2:31 pmICN-SEA
12h 36m1 stop
Air Canada Logo
5:50 am - 5:10 pmSEA-ICN
18h 20m1 stop
$479Air Canada
Find Deal
Sat, Dec 20 - Fri, Feb 27
American Airlines Logo
7:15 pm - 1:14 pmICN-SEA
58h 59m2 stops
American Airlines Logo
8:43 am - 4:45 pmSEA-ICN
39h 02m2 stops
$493American Airlines
Find Deal
Tue, Jan 20 - Fri, Jan 23
Air Canada Logo
6:55 pm - 2:31 pmICN-SEA
12h 36m1 stop
Air Canada Logo
5:50 am - 4:00 pmSEA-ICN
17h 10m1 stop
$500Air Canada
Find Deal
Mon, Dec 8 - Tue, Jan 20
Air Canada Logo
5:55 pm - 2:31 pmICN-SEA
13h 36m1 stop
Air Canada Logo
5:50 am - 4:00 pmSEA-ICN
17h 10m1 stop
$502Air Canada
Find Deal
Wed, Dec 17 - Thu, Jan 8
Air Canada Logo
6:55 pm - 2:31 pmICN-SEA
12h 36m1 stop
Air Canada Logo
3:40 pm - 5:10 pmSEA-ICN
32h 30m1 stop
$509Air Canada
Find Deal
Thu, Dec 25 - Sat, Jan 10
Air Canada Logo
5:55 pm - 2:31 pmICN-SEA
13h 36m1 stop
Air Canada Logo
3:40 pm - 4:05 pmSEA-ICN
32h 25m1 stop
$522Air Canada
Find Deal
Wed, Dec 17 - Sat, Mar 28

Air Canada flights from Incheon Intl Airport to Seattle

Our best Air Canada deals on Incheon Intl Airport to Seattle flight tickets
Air Canada
Feb 1
ICN5:55 pmIncheon Intl
13h 36m
1 stop
SEA2:31 pmSeattle/Tacoma Intl
Feb 15
SEA10:05 amSeattle/Tacoma Intl
14h 05m
1 stop
ICN5:10 pmIncheon Intl
$462
Find similar
Air Canada
Jan 30
ICN5:55 pmIncheon Intl
21h 11m
1 stop
SEA10:06 pmSeattle/Tacoma Intl
Feb 13
SEA8:00 pmSeattle/Tacoma Intl
27h 00m
1 stop
ICN4:00 pmIncheon Intl
$463
Find similar
Air Canada
Feb 6
ICN5:55 pmIncheon Intl
13h 36m
1 stop
SEA2:31 pmSeattle/Tacoma Intl
Feb 18
SEA5:50 amSeattle/Tacoma Intl
18h 20m
1 stop
ICN5:10 pmIncheon Intl
$464
Find similar

American Airlines flights from Incheon Intl Airport to Seattle

Our best American Airlines deals on Incheon Intl Airport to Seattle flight tickets
American Airlines
Jan 20
ICN7:15 pmIncheon Intl
58h 59m
2 stops
SEA1:14 pmSeattle/Tacoma Intl
Jan 23
SEA8:43 amSeattle/Tacoma Intl
39h 02m
2 stops
ICN4:45 pmIncheon Intl
$493
Find similar
American Airlines
Mar 18
ICN5:55 pmIncheon Intl
38h 53m
2 stops
SEA4:48 pmSeattle/Tacoma Intl
Apr 13
SEA6:05 amSeattle/Tacoma Intl
41h 25m
2 stops
ICN3:30 pmIncheon Intl
$563
Find similar
American Airlines
Jan 13
ICN7:15 pmIncheon Intl
34h 53m
2 stops
SEA1:08 pmSeattle/Tacoma Intl
Jan 18
SEA8:25 amSeattle/Tacoma Intl
39h 20m
2 stops
ICN4:45 pmIncheon Intl
$613
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 26, 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

Sun 2/1

5:55 pm-2:31 pm

1 stop13h 36m

Seattle/Tacoma Intl

Sun 2/15

10:05 am-5:10 pm

1 stop14h 05m

$462

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 1/30

5:55 pm-10:06 pm

1 stop21h 11m

Seattle/Tacoma Intl

Fri 2/13

8:00 pm-4:00 pm

1 stop27h 00m

$463

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 2/6

5:55 pm-2:31 pm

1 stop13h 36m

Seattle/Tacoma Intl

Wed 2/18

5:50 am-5:10 pm

1 stop18h 20m

$464

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Wed 12/24

5:55 pm-2:31 pm

1 stop13h 36m

Seattle/Tacoma Intl

Thu 1/8

5:50 am-4:00 pm

1 stop17h 10m

$476

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sat 12/20

6:55 pm-2:31 pm

1 stop12h 36m

Seattle/Tacoma Intl

Fri 2/27

5:50 am-5:10 pm

1 stop18h 20m

$479

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 1/20

7:15 pm-1:14 pm

2 stops58h 59m

Seattle/Tacoma Intl

Fri 1/23

8:43 am-4:45 pm

2 stops39h 02m

$493

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 12/8

6:55 pm-2:31 pm

1 stop12h 36m

Seattle/Tacoma Intl

Tue 1/20

5:50 am-4:00 pm

1 stop17h 10m

$500

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Wed 12/17

5:55 pm-2:31 pm

1 stop13h 36m

Seattle/Tacoma Intl

Thu 1/8

5:50 am-4:00 pm

1 stop17h 10m

$502

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 12/25

6:55 pm-2:31 pm

1 stop12h 36m

Seattle/Tacoma Intl

Sat 1/10

3:40 pm-5:10 pm

1 stop32h 30m

$509

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Wed 12/17

5:55 pm-2:31 pm

1 stop13h 36m

Seattle/Tacoma Intl

Sat 3/28

3:40 pm-4:05 pm

1 stop32h 25m

$522

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 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 $589. 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 $627.

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 $728. 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 $912.

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 $774 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 $705 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 $555 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 23% 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

$504

Fastest flight time

9h 55m

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 $504. The best round-trip flight deal from Incheon Intl Airport to Seattle found on momondo in the last 72 hours is $523.
The fastest flight from Incheon Intl Airport to Seattle takes 9h 55m
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
490 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $470Free CancellationRating
8.4
1,172 reviews
Search Korean Air flights
Air CanadaPriceFrom $472Free CancellationRating
7.1
10,481 reviews
Search Air Canada flights
Alaska AirlinesPriceFrom $476Free CancellationRating
8.0
11,363 reviews
Search Alaska Airlines flights
Hawaiian AirlinesPriceFrom $485Free CancellationRating
7.8
2,815 reviews
Search Hawaiian Airlines flights
DeltaPriceFrom $606Free CancellationRating
7.9
8,004 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 4 flights to Seattle from Incheon Intl Airport in an average week. Users have rated it 8.2/10 across 490 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
Marysville
Puyallup
Redmond
Tukwila
Cle Elum
Lakewood
Federal Way
Fife
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.

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