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Cheap flights from Incheon Intl Airport to Washington from $371

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 Washington departing on 3/7. 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 Washington

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
2:10 pm - 3:01 pm
ICN
-
SEA
16h 51m
2 stops
Multiple Airlines Logo
3:00 pm - 4:05 pm
SEA
-
ICN
33h 05m
1 stop
$513Multiple Airlines
Tue, Mar 10 - Tue, Sep 8
Multiple Airlines Logo
2:10 pm - 3:01 pm
ICN
-
SEA
16h 51m
2 stops
Multiple Airlines Logo
3:00 pm - 2:05 pm
SEA
-
ICN
31h 05m
2 stops
$530Multiple Airlines
Tue, Mar 10 - Tue, Sep 8
Hawaiian Airlines Logo
8:35 pm - 6:05 pm
ICN
-
PDX
14h 30m
1 stop
Hawaiian Airlines Logo
1:36 pm - 6:35 pm
PDX
-
ICN
35h 59m
1 stop
$549Hawaiian Airlines
Sat, Feb 21 - Sat, Feb 28
Hawaiian Airlines Logo
8:35 pm - 9:10 pm
ICN
-
PDX
17h 35m
1 stop
Hawaiian Airlines Logo
5:40 pm - 6:35 pm
PDX
-
ICN
31h 55m
1 stop
$552Hawaiian Airlines
Sat, Feb 21 - Sat, Feb 28
Hawaiian Airlines Logo
8:35 pm - 9:10 pm
ICN
-
PDX
17h 35m
1 stop
Hawaiian Airlines Logo
7:57 pm - 6:35 pm
PDX
-
ICN
29h 38m
1 stop
$555Hawaiian Airlines
Sat, Feb 21 - Sat, Feb 28
Multiple Airlines Logo
8:35 pm - 9:38 pm
ICN
-
PDX
17h 03m
1 stop
Multiple Airlines Logo
6:00 am - 6:35 pm
PDX
-
ICN
20h 35m
1 stop
$572Multiple Airlines
Sun, Apr 5 - Fri, Apr 17
Air Canada Logo
5:45 pm - 7:06 pm
ICN
-
PDX
17h 21m
1 stop
Air Canada Logo
5:15 am - 4:05 pm
PDX
-
ICN
42h 50m
2 stops
$574Air Canada
Fri, Jul 10 - Sun, Jul 12
Air Canada Logo
5:45 pm - 2:51 pm
ICN
-
PDX
13h 06m
1 stop
Air Canada Logo
5:15 am - 4:05 pm
PDX
-
ICN
42h 50m
2 stops
$575Air Canada
Fri, Jul 10 - Sun, Jul 12
Asiana Airlines Logo
9:00 pm - 2:55 pm
ICN
-
SEA
9h 55mnonstop
Asiana Airlines Logo
12:55 am - 5:15 am
SEA
-
ICN
12h 20mnonstop
$629Asiana Airlines
Fri, May 8 - Fri, May 15
Asiana Airlines Logo
9:00 pm - 2:55 pm
ICN
-
SEA
9h 55mnonstop
Asiana Airlines Logo
12:55 am - 5:15 am
SEA
-
ICN
12h 20mnonstop
$630Asiana Airlines
Fri, May 8 - Fri, May 15

Asiana Airlines flights from Incheon Intl Airport to State of Washington

Our best Asiana Airlines deals on Incheon Intl Airport to State of Washington flight tickets
Asiana Airlines
May 8
ICN9:00 pmIncheon Intl
9h 55m
SEA2:55 pmSeattle/Tacoma Intl
May 15
SEA12:55 amSeattle/Tacoma Intl
12h 20m
ICN5:15 amIncheon Intl
$629
Asiana Airlines
May 8
ICN9:00 pmIncheon Intl
9h 55m
SEA2:55 pmSeattle/Tacoma Intl
May 15
SEA12:55 amSeattle/Tacoma Intl
12h 20m
ICN5:15 amIncheon Intl
$630
Asiana Airlines
May 8
ICN9:00 pmIncheon Intl
9h 55m
SEA2:55 pmSeattle/Tacoma Intl
May 17
SEA12:55 amSeattle/Tacoma Intl
12h 20m
ICN5:15 amIncheon Intl
$632

Hawaiian Airlines flights from Incheon Intl Airport to State of Washington

Our best Hawaiian Airlines deals on Incheon Intl Airport to State of Washington flight tickets
Hawaiian Airlines
Feb 21
ICN8:35 pmIncheon Intl
14h 30m
1 stop
PDX6:05 pmPortland
Feb 28
PDX9:19 pmPortland
28h 16m
1 stop
ICN6:35 pmIncheon Intl
$549
Hawaiian Airlines
Feb 21
ICN8:35 pmIncheon Intl
17h 35m
1 stop
PDX9:10 pmPortland
Feb 28
PDX5:40 pmPortland
31h 55m
1 stop
ICN6:35 pmIncheon Intl
$552
Hawaiian Airlines
Feb 21
ICN8:35 pmIncheon Intl
17h 35m
1 stop
PDX9:10 pmPortland
Feb 28
PDX7:57 pmPortland
29h 38m
1 stop
ICN6:35 pmIncheon Intl
$555

momondo Fare Finder

 
Customize your flight search to find flights from Incheon Intl Airport to State of Washington 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 February 7, 2026.
Use the filters below to find and compare flights from Incheon Intl Airport to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 3/10

2:10 pm-3:01 pm

2 stops16h 51m

Seattle/Tacoma Intl

Tue 9/8

3:00 pm-4:05 pm

1 stop33h 05m

$513

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 3/10

2:10 pm-3:01 pm

2 stops16h 51m

Seattle/Tacoma Intl

Tue 9/8

3:00 pm-2:05 pm

2 stops31h 05m

$530

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Sat 2/21

8:35 pm-6:05 pm

1 stop14h 30m

Portland

Sat 2/28

1:36 pm-6:35 pm

1 stop35h 59m

$549

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Sat 2/21

8:35 pm-9:10 pm

1 stop17h 35m

Portland

Sat 2/28

5:40 pm-6:35 pm

1 stop31h 55m

$552

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Sat 2/21

8:35 pm-9:10 pm

1 stop17h 35m

Portland

Sat 2/28

7:57 pm-6:35 pm

1 stop29h 38m

$555

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Sun 4/5

8:35 pm-9:38 pm

1 stop17h 03m

Portland

Fri 4/17

6:00 am-6:35 pm

1 stop20h 35m

$572

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Fri 7/10

5:45 pm-7:06 pm

1 stop17h 21m

Portland

Sun 7/12

5:15 am-4:05 pm

2 stops42h 50m

$574

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Fri 7/10

5:45 pm-2:51 pm

1 stop13h 06m

Portland

Sun 7/12

5:15 am-4:05 pm

2 stops42h 50m

$575

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 5/8

9:00 pm-2:55 pm

Nonstop9h 55m

Seattle/Tacoma Intl

Fri 5/15

12:55 am-5:15 am

Nonstop12h 20m

$629

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 5/8

9:00 pm-2:55 pm

Nonstop9h 55m

Seattle/Tacoma Intl

Fri 5/15

12:55 am-5:15 am

Nonstop12h 20m

$630

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 Washington from

How to get the cheapest flight ticket from Incheon Intl Airport to State of Washington

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 State of Washington?

The month of November is, on average, the cheapest month to fly to State of Washington from Incheon Intl Airport, with most prices found around $531. If you aren’t able to travel to State of Washington during the month of November, then flying in December is also cheap. Prices for this month can be found on momondo for an average of $597.

What is the cheapest day to depart on your flight to State of Washington?

The cheapest day to depart from Incheon Intl Airport to State of Washington is on a Thursday. Travelers who choose to depart for State of Washington on a Thursday will often find tickets for as low as $719. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Incheon Intl Airport to State of Washington for around $898.

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

The cheapest time of day to fly to State of Washington is in the evening when flights can be purchased for as low as $745. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $754 on average. Flights to State of Washington from Incheon Intl Airport in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Incheon Intl to Washington flight route?

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

How far in advance should I book a flight to State of Washington?

You are more likely to see cheaper flights to State of Washington from Incheon Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $700 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from Incheon Intl Airport for as low as $543 on momondo.

What cabin class options are available on Incheon Intl to Washington flights?

There are 4 cabin classes available to choose from on Incheon Intl to Washington 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 State of Washington flights?

You could potentially save up to 23% on your flight if you consider stops on a Incheon Intl Airport to State of Washington flight.

Cheap Incheon Intl Airport to State of Washington flight deals and tips

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

Best Price Found

$649

Fastest flight time

10h 00m

Direct flights

Every day

Airports in State of Washington

96 airports
The best one-way flight to State of Washington from Incheon Intl Airport in the past 72 hours is $649. The best round-trip flight deal from Incheon Intl Airport to State of Washington found on momondo in the last 72 hours is $732.
The fastest flight from Incheon Intl Airport to State of Washington takes 10h 00m
Direct flights go from Incheon Intl Airport to State of Washington every day.
There are 96 airports in State of Washington. From Incheon Intl Airport there are direct flights to Seattle/Tacoma Intl (SEA).
Search flight deals

  • When did momondo last update prices for flights from Incheon Intl Airport to Washington?

    Prices for flights from Incheon Intl Airport to Washington are refreshed on a daily basis.

  • How many operators does momondo search for flights from Incheon Intl Airport to Washington?

  • How old do you have to be to fly from Incheon Intl Airport to Washington?

    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 Washington.

  • What documentation or ID do you need to fly to Washington?

    The required travel and health documents for your Washington trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Incheon Intl Airport to State of Washington?

Best airlines flying from Incheon Intl Airport to State of Washington

Compare and see reviews for airlines that fly from Incheon Intl Airport to State of Washington 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
503 reviews
Search Asiana Airlines flights
Korean AirPriceFrom $469Free CancellationRating
8.4
1,188 reviews
Search Korean Air flights
Air CanadaPriceFrom $472Free CancellationRating
7.1
10,697 reviews
Search Air Canada flights
Alaska AirlinesPriceFrom $476Free CancellationRating
8.0
11,848 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $516Free CancellationRating
7.4
9,246 reviews
Search United Airlines flights
DeltaPriceFrom $606Free CancellationRating
7.9
8,166 reviews
Search Delta flights

Why use momondo?

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

Finding the right flight to Washington from Seoul is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington quick and easy, saving you time and money.

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

Yes. All flights to Washington from Seoul on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

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 Seoul to Washington.

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

Of course. momondo tracks the price of Seoul to Washington flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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