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Cheap flights from Incheon Intl Airport to Seattle from $354

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 3/10. 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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0 bags

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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
5:45 pm - 10:20 pm
ICN
-
SEA
20h 35m
1 stop
Air Canada Logo
3:00 pm - 4:05 pm
SEA
-
ICN
33h 05m
1 stop
$427Air Canada
Mon, May 11 - Sun, May 24
Multiple Airlines Logo
9:00 am - 2:20 pm
ICN
-
SEA
21h 20m
2 stops
Multiple Airlines Logo
5:40 am - 4:05 pm
SEA
-
ICN
18h 25m
1 stop
$442Multiple Airlines
Wed, May 13 - Fri, May 22
Air Canada Logo
6:55 pm - 2:46 pm
ICN
-
SEA
12h 51m
1 stop
Air Canada Logo
10:10 am - 4:05 pm
SEA
-
ICN
13h 55m
1 stop
$444Air Canada
Thu, Feb 19 - Thu, Apr 16
Multiple Airlines Logo
5:45 pm - 2:20 pm
ICN
-
SEA
12h 35m
1 stop
Multiple Airlines Logo
9:55 am - 10:15 pm
SEA
-
ICN
20h 20m
2 stops
$446Multiple Airlines
Tue, May 5 - Tue, May 19
Multiple Airlines Logo
5:45 pm - 9:15 am
ICN
-
SEA
31h 30m
1 stop
Multiple Airlines Logo
7:20 pm - 11:00 am
SEA
-
ICN
47h 40m
2 stops
$447Multiple Airlines
Mon, May 11 - Sun, May 24
Multiple Airlines Logo
10:45 am - 2:20 pm
ICN
-
SEA
19h 35m
2 stops
Multiple Airlines Logo
9:55 am - 4:05 pm
SEA
-
ICN
14h 10m
1 stop
$450Multiple Airlines
Wed, May 13 - Thu, May 21
Air Canada Logo
5:45 pm - 9:15 am
ICN
-
SEA
31h 30m
1 stop
Air Canada Logo
3:00 pm - 12:50 pm
SEA
-
ICN
53h 50m
2 stops
$451Air Canada
Mon, May 11 - Sun, May 24
Multiple Airlines Logo
5:45 pm - 10:20 pm
ICN
-
SEA
20h 35m
1 stop
Multiple Airlines Logo
7:20 pm - 9:30 pm
SEA
-
ICN
34h 10m
2 stops
$452Multiple Airlines
Thu, May 7 - Thu, Jun 25
Multiple Airlines Logo
9:00 am - 2:31 pm
ICN
-
SEA
22h 31m
2 stops
Multiple Airlines Logo
5:40 am - 4:05 pm
SEA
-
ICN
18h 25m
1 stop
$457Multiple Airlines
Wed, Feb 25 - Wed, May 27
Multiple Airlines Logo
7:00 am - 3:01 pm
ICN
-
SEA
24h 01m
2 stops
Multiple Airlines Logo
5:50 am - 9:30 pm
SEA
-
ICN
23h 40m
2 stops
$460Multiple Airlines
Tue, Mar 10 - Wed, Apr 22

American Airlines flights from Incheon Intl Airport to Seattle

Our best American Airlines deals on Incheon Intl Airport to Seattle flight tickets
American Airlines
Feb 17
ICN7:15 pmIncheon Intl
37h 49m
2 stops
SEA4:04 pmSeattle/Tacoma Intl
Feb 24
SEA11:45 amSeattle/Tacoma Intl
36h 00m
1 stop
ICN4:45 pmIncheon Intl
$498
American Airlines
Feb 17
ICN7:15 pmIncheon Intl
37h 49m
2 stops
SEA4:04 pmSeattle/Tacoma Intl
Feb 26
SEA11:49 amSeattle/Tacoma Intl
35h 56m
2 stops
ICN4:45 pmIncheon Intl
$507
American Airlines
Feb 17
ICN7:15 pmIncheon Intl
37h 49m
2 stops
SEA4:04 pmSeattle/Tacoma Intl
Feb 25
SEA7:15 amSeattle/Tacoma Intl
40h 30m
2 stops
ICN4:45 pmIncheon Intl
$515

Air Canada flights from Incheon Intl Airport to Seattle

Our best Air Canada deals on Incheon Intl Airport to Seattle flight tickets
Air Canada
May 11
ICN5:45 pmIncheon Intl
20h 35m
1 stop
SEA10:20 pmSeattle/Tacoma Intl
May 24
SEA3:00 pmSeattle/Tacoma Intl
33h 05m
1 stop
ICN4:05 pmIncheon Intl
$427
Air Canada
Feb 19
ICN6:55 pmIncheon Intl
12h 51m
1 stop
SEA2:46 pmSeattle/Tacoma Intl
Apr 16
SEA10:10 amSeattle/Tacoma Intl
13h 55m
1 stop
ICN4:05 pmIncheon Intl
$444
Air Canada
May 11
ICN5:45 pmIncheon Intl
31h 30m
1 stop
SEA9:15 amSeattle/Tacoma Intl
May 24
SEA3:00 pmSeattle/Tacoma Intl
53h 50m
2 stops
ICN12:50 pmIncheon Intl
$451

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 January 26, 2026.
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

Mon 5/11

5:45 pm-10:20 pm

1 stop20h 35m

Seattle/Tacoma Intl

Sun 5/24

3:00 pm-4:05 pm

1 stop33h 05m

$427

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Wed 5/13

9:00 am-2:20 pm

2 stops21h 20m

Seattle/Tacoma Intl

Fri 5/22

5:40 am-4:05 pm

1 stop18h 25m

$442

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 2/19

6:55 pm-2:46 pm

1 stop12h 51m

Seattle/Tacoma Intl

Thu 4/16

10:10 am-4:05 pm

1 stop13h 55m

$444

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 5/5

5:45 pm-2:20 pm

1 stop12h 35m

Seattle/Tacoma Intl

Tue 5/19

9:55 am-10:15 pm

2 stops20h 20m

$446

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 5/11

5:45 pm-9:15 am

1 stop31h 30m

Seattle/Tacoma Intl

Sun 5/24

7:20 pm-11:00 am

2 stops47h 40m

$447

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Wed 5/13

10:45 am-2:20 pm

2 stops19h 35m

Seattle/Tacoma Intl

Thu 5/21

9:55 am-4:05 pm

1 stop14h 10m

$450

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 5/11

5:45 pm-9:15 am

1 stop31h 30m

Seattle/Tacoma Intl

Sun 5/24

3:00 pm-12:50 pm

2 stops53h 50m

$451

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 5/7

5:45 pm-10:20 pm

1 stop20h 35m

Seattle/Tacoma Intl

Thu 6/25

7:20 pm-9:30 pm

2 stops34h 10m

$452

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Wed 2/25

9:00 am-2:31 pm

2 stops22h 31m

Seattle/Tacoma Intl

Wed 5/27

5:40 am-4:05 pm

1 stop18h 25m

$457

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 3/10

7:00 am-3:01 pm

2 stops24h 01m

Seattle/Tacoma Intl

Wed 4/22

5:50 am-9:30 pm

2 stops23h 40m

$460

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 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 $531. If you don’t want to visit Seattle in November, then you should wait until December to fly from Incheon Intl Airport, when ticket prices are also cheap, with an average price of $597.

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 $718. 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 $911.

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

Flying to Seattle from Incheon Intl Airport in the evening is the least expensive time of day to depart. momondo users have found prices as low as $753 when looking at flights departing in the evening. Flights to Seattle are more costly in the afternoon, with an average ticket price of $756. Departure times in the afternoon 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 $701 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 $541 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 29% 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 January 2026, prices for Incheon Intl Airport to Seattle flights are approximately 1% 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

$633

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 $633. The best round-trip flight deal from Incheon Intl Airport to Seattle found on momondo in the last 72 hours is $700.
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 in Seattle. From Incheon Intl Airport there are direct flights to 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
Hawaiian AirlinesPriceFrom $351Free CancellationRating
7.8
2,829 reviews
Search Hawaiian Airlines flights
Asiana AirlinesPriceFrom $466Free CancellationRating
8.1
501 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $469Free CancellationRating
8.4
1,188 reviews
Search Korean Air flights
Alaska AirlinesPriceFrom $476Free CancellationRating
8.0
11,793 reviews
Search Alaska Airlines flights
DeltaPriceFrom $606Free CancellationRating
7.9
8,118 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 $469. Generally, Korean Air has 14 flights on this route every week with an average price of $724. 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 $466 round-trip, depending on your selected dates, with average Asiana Airlines deals seen on momondo around $650. Asiana Airlines operates 5 flights to Seattle from Incheon Intl Airport in an average week. Users have rated it 8.1/10 across 501 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
Cle Elum
Tukwila
Lakewood
Federal Way
Centralia
Westport
Kirkland
Fife
Tumwater

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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