ICN

$448 Find Cheap Flights from Washington to Seoul Incheon Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Incheon Intl departing on 5/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Cheap Flights from Washington to Incheon Intl

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington to Incheon Intl that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington to Incheon Intl

Mon, Aug 31 - Thu, Oct 1
China Airlines Logo
1:55 am - 11:30 am
SEA
-
ICN
17h 35m
1 stop
China Airlines Logo
8:35 pm - 7:15 pm
ICN
-
SEA
14h 40m
1 stop
$864China Airlines
Sun, Sep 6 - Mon, Dec 7
China Airlines Logo
1:55 am - 7:05 pm
SEA
-
ICN
25h 10m
1 stop
China Airlines Logo
8:15 pm - 6:10 pm
ICN
-
SEA
14h 55m
1 stop
$871China Airlines
Tue, Apr 21 - Wed, May 13
Multiple Airlines Logo
8:41 am - 9:40 pm
SEA
-
ICN
20h 59m
1 stop
Multiple Airlines Logo
8:35 am - 6:16 pm
ICN
-
SEA
25h 41m
2 stops
$893Multiple Airlines
Tue, Apr 21 - Tue, May 12
Multiple Airlines Logo
8:41 am - 9:40 pm
SEA
-
ICN
20h 59m
1 stop
Multiple Airlines Logo
11:20 am - 7:46 pm
ICN
-
SEA
24h 26m
2 stops
$902Multiple Airlines
Wed, Sep 30 - Thu, Oct 8
Air Canada Logo
7:45 pm - 4:05 pm
PDX
-
ICN
28h 20m
1 stop
Air Canada Logo
5:45 pm - 7:06 pm
ICN
-
PDX
17h 21m
1 stop
$907Air Canada
Mon, Sep 7 - Wed, Sep 16
EVA Air Logo
1:30 am - 6:45 pm
SEA
-
ICN
25h 15m
1 stop
EVA Air Logo
12:00 pm - 7:40 pm
ICN
-
SEA
23h 40m
1 stop
$909EVA Air
Wed, Sep 30 - Wed, Oct 7
Air Canada Logo
3:30 pm - 4:05 pm
PDX
-
ICN
32h 35m
1 stop
Air Canada Logo
5:45 pm - 7:06 pm
ICN
-
PDX
17h 21m
1 stop
$917Air Canada
Wed, Sep 30 - Tue, Oct 6
Asiana Airlines Logo
7:45 pm - 4:05 pm
PDX
-
ICN
28h 20m
1 stop
Asiana Airlines Logo
5:45 pm - 7:06 pm
ICN
-
PDX
17h 21m
1 stop
$938Asiana Airlines
Wed, Sep 30 - Tue, Oct 6
Asiana Airlines Logo
3:30 pm - 4:05 pm
PDX
-
ICN
32h 35m
1 stop
Asiana Airlines Logo
5:45 pm - 2:51 pm
ICN
-
PDX
13h 06m
1 stop
$947Asiana Airlines
Wed, May 6 - Tue, May 12
EVA Air Logo
6:14 pm - 6:45 pm
GEG
-
ICN
56h 31m
2 stops
EVA Air Logo
12:00 pm - 2:40 pm
ICN
-
GEG
42h 40m
2 stops
$1,071EVA Air
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$461
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly and prices are also 12% lower on average.
Flight from Seattle to Seoul Incheon Airport

Flights from Washington to Incheon Intl: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Washington to Incheon Intl 
Learn how KAYAK collects reviews and tips from users.
AngelitaFlew with Korean Air
SEA
-
ICN
Mar 2026
Get an earliest flight as possible because of less traffic
AvikFlew with Delta
SEA
-
ICN
Dec 2025
Pack food I guess , especially if traveling with little Kids
lizFlew with Asiana Airlines
SEA
-
ICN
May 2024
Do try to snooze on long haul flights, bring a good book to read, choose an aisle seat.

FAQs for booking Washington to Seoul Incheon Airport flights

  • How does KAYAK find such low prices on flights from Washington to Seoul Incheon Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington to Seoul Incheon Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington to Seoul Incheon Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seoul Incheon Airport from Washington is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington to Seoul Incheon Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seoul Incheon Airport with an airline and back to Washington with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington to Seoul Incheon Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seoul Incheon Airport from Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Incheon Intl?

Book flights to Incheon Intl if you plan to visit one of these locations
Seongnam
Suwon
Anyang

Everything you need to know for your flight to Incheon Intl

Information on your arrival and departure airports

Seoul Incheon Airport (ICN)