SEA - ICN

Find cheap flights from Seattle to Incheon

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KAYAK searches hundreds of travel sites at once for deals on flights to Incheon Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Incheon, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Incheon, as well as popular online travel agencies
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Cheap Flight Deals from Seattle to Incheon (SEA-ICN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Incheon 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.

Recent round-trip flight deals from Seattle to Incheon Intl

KAYAK's recommended round-trip deals from the most popular airlines that fly from Seattle to Incheon Intl.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
Alaska Airlines Logo
SEA-ICN
11h 40mdirect
Alaska Airlines Logo
ICN-SEA
10h 00mdirect
Alaska Airlines
Find Deal
Thai Airways Logo
SEA-ICN
11h 40mdirect
Thai Airways Logo
ICN-SEA
10h 10mdirect
Thai Airways
Find Deal
Delta Logo
SEA-ICN
12h 05mdirect
Delta Logo
ICN-SEA
10h 10mdirect
Hawaiian Airlines Logo
SEA-ICN
11h 40mdirect
Hawaiian Airlines Logo
ICN-SEA
10h 10mdirect
Hawaiian Airlines
Find Deal
Korean Air Logo
SEA-ICN
12h 05mdirect
Korean Air Logo
ICN-SEA
10h 00mdirect
Korean Air
Find Deal
Asiana Airlines Logo
SEA-ICN
11h 40mdirect
Asiana Airlines Logo
ICN-SEA
10h 10mdirect
Asiana Airlines
Find Deal
United Airlines Logo
SEA-ICN
11h 40mdirect
United Airlines Logo
ICN-SEA
10h 10mdirect
United Airlines
Find Deal
Singapore Airlines Logo
SEA-ICN
11h 40mdirect
Singapore Airlines Logo
ICN-SEA
10h 10mdirect
Singapore Airlines
Find Deal

Expert advice for your flight from Seattle to Incheon Intl

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are specific to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Korean Air

Prestige Class on 747-8 offers direct aisle access and high privacy partitions.


Economy class offers complimentary meals and alcohol, enhancing the travel experience.

Read more about Korean Airby Robert Schrader
Asiana Airlines

Economy seats on A380 offer extra space with 2-4-2 layout and personal side lockers.


A350 offers Economy Smartium with 4 inches extra legroom, priority boarding, and lounge access.

Our travel experts
Robert Schrader

Robert Schrader

Expert on Korean Air

Robert Schrader

Robert Schrader

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Read more
John Walton

John Walton

Expert on Asiana Airlines

John Walton

John Walton

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Read more

KAYAK's insights & trends for Seattle to Incheon Intl flights

Get data-powered insights and trends into flights from Seattle to Incheon Intl to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Seattle to Incheon?

The average price of all round-trip flights from Seattle to Incheon Intl Airport clicked on KAYAK for each day over the last 12 months.
When flying from Seattle to Incheon, you should consider leaving on a Thursday and avoid Saturdays if you are looking for the best rates. For your return to Seattle, you’ll find the best rates on Fridays and the most expensive ones on Saturdays.

What is the cheapest month to fly from Seattle to Incheon Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Incheon Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Seattle to Incheon Intl Airport is February, where tickets cost C$ 1,342 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is C$ 2,339 and C$ 2,184 respectively.

Can I save money by flying with a layover from Seattle to Incheon Intl Airport?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.
Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at C$ 2,666 on average.

How far in advance should I book a flight from Seattle to Incheon Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Incheon Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below average price on the flight from Seattle to Incheon Intl Airport, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 3 weeks before departure.

Good to know

Low season

January

High season

October
Best time to beat the crowds (18% less expensive on average)
Most popular time to fly and prices are also 7% lower on average.

When to book flights from Seattle to Incheon Intl

Are your dates flexible? Find out the best times to travel from Seattle to Incheon Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Flights from Seattle to Incheon Intl: the best tips from KAYAK users' own experiences

Insights shared by verified travellers who flew the route from Seattle to Incheon Intl 
Verified travelerFlew with Asiana AirlinesSEA-ICNDec 2024
Asiana is a good airline to fly on.
lizFlew with Asiana AirlinesSEA-ICNMay 2024
Do try to snooze on long haul flights, bring a good book to read, choose an aisle seat.

FAQs for booking Seattle to Incheon flights

  • Which airlines offer Wi-Fi service onboard planes from Seattle to Incheon?

    Asiana Airlines, Alaska Airlines, American Airlines, Delta, and WestJet offer inflight Wi-Fi service on the Seattle to Incheon flight route.

  • Which aircraft models fly most regularly from Seattle to Incheon?

    The Boeing 787-10 Dreamliner is the aircraft model that flies most regularly on the Seattle to Incheon flight route.

  • Which airline alliances offer flights from Seattle to Incheon?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Seattle and Incheon, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from Seattle to Incheon?

    There are direct flights from Seattle to Incheon on a daily basis.

  • How does KAYAK find such low prices on flights from Seattle to Incheon?

    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 Seattle to Incheon.

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

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

  • What is the Hacker Fare option on flights from Seattle to Incheon?

    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 Incheon with an airline and back to Seattle with another airline.

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

    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 Incheon from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from Seattle to Incheon Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 643 or less one-way and C$ 979 or less round-trip.

Prefer to fly direct from Seattle to Incheon?

Find which airlines fly direct from Seattle/Tacoma Intl Airport to Incheon Intl Airport, which days they fly and book direct flights.

Direct departures

Seattle/Tacoma Intl to Incheon Intl

Monday

Asiana Airlines,Delta,Korean Air, +3 more

Asiana Airlines,Delta, +4 more

Tuesday

Asiana Airlines,Delta,Korean Air, +3 more

Asiana Airlines,Delta, +4 more

Wednesday

Asiana Airlines,Delta,Korean Air, +3 more

Asiana Airlines,Delta, +4 more

Thursday

Asiana Airlines,Delta,Korean Air, +3 more

Asiana Airlines,Delta, +4 more

Friday

Asiana Airlines,Delta,Korean Air, +3 more

Asiana Airlines,Delta, +4 more

Saturday

Asiana Airlines,Delta,Korean Air, +3 more

Asiana Airlines,Delta, +4 more

Sunday

Asiana Airlines,Delta,Korean Air, +3 more

Asiana Airlines,Delta, +4 more

See more nonstop flights

Direct returns

Incheon Intl to Seattle/Tacoma Intl

Monday

Asiana Airlines,Delta,Korean Air, +3 more

Asiana Airlines,Delta, +4 more

Tuesday

Asiana Airlines,Delta,Korean Air, +3 more

Asiana Airlines,Delta, +4 more

Wednesday

Asiana Airlines,Delta,Korean Air, +3 more

Asiana Airlines,Delta, +4 more

Thursday

Asiana Airlines,Delta,Korean Air, +3 more

Asiana Airlines,Delta, +4 more

Friday

Asiana Airlines,Delta,Korean Air, +3 more

Asiana Airlines,Delta, +4 more

Saturday

Asiana Airlines,Delta,Korean Air, +3 more

Asiana Airlines,Delta, +4 more

Sunday

Asiana Airlines,Delta,Korean Air, +3 more

Asiana Airlines,Delta, +4 more

See more nonstop flights
See more nonstop flights

Everything you need to know for your flight from Seattle to Incheon Intl

Information on your arrival and departure airports

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