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Cheap flights from Incheon Intl Airport to Washington from $386

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 12/8. 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 Washington

Cheap round-trip flights

Alaska Airlines Logo
8:35 pm - 2:45 pmICN-SEA
10h 10mnonstop
Alaska Airlines Logo
5:57 pm - 7:25 pmSEA-ICN
32h 28m2 stops
$460Alaska Airlines
Find Deal
Fri, Sep 19 - Mon, Nov 10
Alaska Airlines Logo
8:35 pm - 2:45 pmICN-SEA
10h 10mnonstop
Alaska Airlines Logo
5:57 pm - 7:25 pmSEA-ICN
32h 28m2 stops
$463Alaska Airlines
Find Deal
Thu, Sep 18 - Mon, Nov 10
Hawaiian Airlines Logo
8:35 pm - 2:45 pmICN-SEA
10h 10mnonstop
Hawaiian Airlines Logo
2:50 pm - 6:35 pmSEA-ICN
11h 45mnonstop
$513Hawaiian Airlines
Find Deal
Fri, Sep 19 - Fri, Sep 26
Hawaiian Airlines Logo
8:35 pm - 2:45 pmICN-SEA
10h 10mnonstop
Hawaiian Airlines Logo
2:55 pm - 6:35 pmSEA-ICN
11h 40mnonstop
$514Hawaiian Airlines
Find Deal
Sun, Sep 28 - Sun, Oct 5
Asiana Airlines Logo
6:20 pm - 12:30 pmICN-SEA
10h 10mnonstop
Asiana Airlines Logo
2:15 pm - 5:55 pmSEA-ICN
11h 40mnonstop
$542Asiana Airlines
Find Deal
Sat, Sep 20 - Sat, Sep 27
Asiana Airlines Logo
6:20 pm - 12:30 pmICN-SEA
10h 10mnonstop
Asiana Airlines Logo
2:15 pm - 5:55 pmSEA-ICN
11h 40mnonstop
$552Asiana Airlines
Find Deal
Wed, Sep 24 - Fri, Oct 3
United Airlines Logo
11:30 am - 1:28 pmICN-SEA
17h 58m1 stop
United Airlines Logo
7:00 am - 4:15 pmSEA-ICN
16h 15m1 stop
$561United Airlines
Find Deal
Tue, Sep 16 - Sun, Nov 9
United Airlines Logo
4:50 pm - 10:15 pmICN-SEA
21h 25m2 stops
United Airlines Logo
7:00 am - 4:15 pmSEA-ICN
16h 15m1 stop
$564United Airlines
Find Deal
Wed, Sep 17 - Mon, Nov 10
Air Canada Logo
6:55 pm - 6:30 pmICN-PDX
16h 35m1 stop
Air Canada Logo
7:00 pm - 5:10 pmPDX-ICN
29h 10m1 stop
$710Air Canada
Find Deal
Tue, Feb 3 - Wed, Feb 11
Air Canada Logo
5:45 pm - 6:46 pmICN-PDX
17h 01m1 stop
Air Canada Logo
9:50 am - 4:10 pmPDX-ICN
14h 20m1 stop
$712Air Canada
Find Deal
Tue, Oct 14 - Fri, Oct 31

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
Sep 19
ICN8:35 pmIncheon Intl
10h 10m
SEA2:45 pmSeattle/Tacoma Intl
Sep 26
SEA2:50 pmSeattle/Tacoma Intl
11h 45m
ICN6:35 pmIncheon Intl
$513
Find similar
Hawaiian Airlines
Sep 28
ICN8:35 pmIncheon Intl
10h 10m
SEA2:45 pmSeattle/Tacoma Intl
Oct 5
SEA2:55 pmSeattle/Tacoma Intl
11h 40m
ICN6:35 pmIncheon Intl
$514
Find similar
Hawaiian Airlines
Sep 19
ICN8:35 pmIncheon Intl
10h 10m
SEA2:45 pmSeattle/Tacoma Intl
Sep 26
SEA2:50 pmSeattle/Tacoma Intl
11h 45m
ICN6:35 pmIncheon Intl
$515
Find similar

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
Sep 20
ICN6:20 pmIncheon Intl
10h 10m
SEA12:30 pmSeattle/Tacoma Intl
Sep 27
SEA2:15 pmSeattle/Tacoma Intl
11h 40m
ICN5:55 pmIncheon Intl
$542
Find similar
Asiana Airlines
Sep 24
ICN6:20 pmIncheon Intl
10h 10m
SEA12:30 pmSeattle/Tacoma Intl
Oct 3
SEA2:15 pmSeattle/Tacoma Intl
11h 40m
ICN5:55 pmIncheon Intl
$552
Find similar
Asiana Airlines
Oct 20
ICN6:20 pmIncheon Intl
10h 10m
SEA12:30 pmSeattle/Tacoma Intl
Oct 30
SEA12:10 amSeattle/Tacoma Intl
12h 10m
ICN4:20 amIncheon Intl
$556
Find similar

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 August 16, 2025.
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

Fri 9/19

8:35 pm-2:45 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Mon 11/10

5:57 pm-7:25 pm

2 stops32h 28m

$460

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 9/18

8:35 pm-2:45 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Mon 11/10

5:57 pm-7:25 pm

2 stops32h 28m

$463

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 9/19

8:35 pm-2:45 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Fri 9/26

2:50 pm-6:35 pm

Nonstop11h 45m

$513

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sun 9/28

8:35 pm-2:45 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Sun 10/5

2:55 pm-6:35 pm

Nonstop11h 40m

$514

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sat 9/20

6:20 pm-12:30 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Sat 9/27

2:15 pm-5:55 pm

Nonstop11h 40m

$542

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Wed 9/24

6:20 pm-12:30 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Fri 10/3

2:15 pm-5:55 pm

Nonstop11h 40m

$552

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 9/16

11:30 am-1:28 pm

1 stop17h 58m

Seattle/Tacoma Intl

Sun 11/9

7:00 am-4:15 pm

1 stop16h 15m

$561

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Wed 9/17

4:50 pm-10:15 pm

2 stops21h 25m

Seattle/Tacoma Intl

Mon 11/10

7:00 am-4:15 pm

1 stop16h 15m

$564

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Tue 2/3

6:55 pm-6:30 pm

1 stop16h 35m

Portland

Wed 2/11

7:00 pm-5:10 pm

1 stop29h 10m

$710

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Tue 10/14

5:45 pm-6:46 pm

1 stop17h 01m

Portland

Fri 10/31

9:50 am-4:10 pm

1 stop14h 20m

$712

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 June is, on average, the cheapest month to fly to State of Washington from Incheon Intl Airport, with most prices found around $646. If you aren’t able to travel to State of Washington during the month of June, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $648.

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 Wednesday. Travelers who choose to depart for State of Washington on a Wednesday will often find tickets for as low as $812. 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 $1,047.

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 afternoon when flights can be purchased for as low as $850. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,059 on average. Flights to State of Washington from Incheon Intl Airport in the morning 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 $774 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 $674 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 42% 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

$386

Fastest flight time

10h 00m

Direct flights

Every day

Airports in State of Washington

2 airports
The best one-way flight to State of Washington from Incheon Intl Airport in the past 72 hours is $386. The best round-trip flight deal from Incheon Intl Airport to State of Washington found on momondo in the last 72 hours is $460.
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 2 airports near State of Washington: Portland (PDX), 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
Air CanadaPriceFrom $472Free CancellationRating
7.1
9,966 reviews
Search Air Canada flights
Korean AirPriceFrom $515Free CancellationRating
8.4
1,131 reviews
Search Korean Air flights
United AirlinesPriceFrom $516Free CancellationRating
7.4
8,916 reviews
Search United Airlines flights
Asiana AirlinesPriceFrom $536Free CancellationRating
8.2
473 reviews
Search Asiana Airlines flights
DeltaPriceFrom $638Free CancellationRating
8.0
7,985 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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