ICN

$323 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 3/26. 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, Mar 30 - Mon, Jun 1
Multiple Airlines Logo
9:50 am - 4:05 pm
PDX
-
ICN
14h 15m
1 stop
Multiple Airlines Logo
8:40 pm - 9:30 am
ICN
-
PDX
28h 50m
2 stops
$636Multiple Airlines
Tue, Apr 14 - Tue, Apr 28
Multiple Airlines Logo
5:40 am - 9:20 pm
SEA
-
ICN
23h 40m
2 stops
Multiple Airlines Logo
8:40 pm - 9:35 am
ICN
-
SEA
28h 55m
2 stops
$641Multiple Airlines
Thu, Apr 9 - Tue, Apr 21
Air Canada Logo
5:40 am - 4:05 pm
SEA
-
ICN
18h 25m
1 stop
Air Canada Logo
5:45 pm - 10:50 pm
ICN
-
SEA
21h 05m
1 stop
$669Air Canada
Thu, Apr 9 - Tue, Apr 21
Air Canada Logo
5:40 am - 4:05 pm
SEA
-
ICN
18h 25m
1 stop
Air Canada Logo
5:45 pm - 10:50 pm
ICN
-
SEA
21h 05m
1 stop
$672Air Canada
Tue, May 5 - Tue, May 26
Cathay Pacific Logo
11:45 am - 12:40 pm
SEA
-
ICN
32h 55m
1 stop
Cathay Pacific Logo
1:40 pm - 10:05 am
ICN
-
SEA
36h 25m
1 stop
$680Cathay Pacific
Wed, Apr 22 - Tue, May 12
Cathay Pacific Logo
11:45 am - 10:25 pm
SEA
-
ICN
18h 40m
1 stop
Cathay Pacific Logo
8:05 pm - 10:05 am
ICN
-
SEA
30h 00m
1 stop
$686Cathay Pacific
Sat, Mar 14 - Thu, Mar 26
Delta Logo
12:50 pm - 4:30 pm
PSC
-
ICN
35h 40m
1 stop
Delta Logo
8:05 pm - 4:39 pm
ICN
-
PSC
12h 34m
1 stop
$934Delta
Sat, Mar 21 - Fri, Apr 3
Delta Logo
5:35 pm - 4:30 pm
PSC
-
ICN
30h 55m
1 stop
Delta Logo
7:00 pm - 11:41 am
ICN
-
PSC
32h 41m
1 stop
$939Delta
Fri, May 1 - Sat, May 9
Alaska Airlines Logo
7:28 pm - 5:30 pm
PUW
-
ICN
30h 02m
1 stop
Alaska Airlines Logo
7:35 pm - 6:51 pm
ICN
-
PUW
15h 16m
1 stop
$973Alaska Airlines
Fri, May 1 - Sat, May 9
Alaska Airlines Logo
7:28 pm - 5:30 pm
PUW
-
ICN
30h 02m
1 stop
Alaska Airlines Logo
7:35 pm - 4:54 pm
ICN
-
PUW
37h 19m
2 stops
$1,061Alaska Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$323
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly and prices are also 11% 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.
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
Suwon
Seongnam
Anyang

Everything you need to know for your flight to Incheon Intl

Information on your arrival and departure airports

Seoul Incheon Airport (ICN)