HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Incheon Intl

$359+ Cheap flights from Seattle (SEA) to Incheon Intl (ICN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/19. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ICN
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Incheon Intl with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

The best prices from Seattle/Tacoma Intl to Incheon Intl are usually found in January or February, booked 11 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Seattle to Incheon Intl

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Incheon Intl (ICN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 18, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$921
(Kiwi.com)

One-way from

$359
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$1,615
Provider with most accurate pricing for Seattle/Tacoma Intl-Incheon Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Incheon Intl flights.
Search Deals
From Seattle/Tacoma Intl to Incheon Intl
Search Deals
One-way flight from Seattle/Tacoma Intl to Incheon Intl
Search Deals
High demand for flights, 15% potential price rise
Search Deals
Best time to find cheap flights, 2% potential price drop
Search Deals
Average for round-trip flights in December 2024
Search Deals

Find flight deals from Seattle to Incheon Intl

Cheapest flights from Seattle to Incheon Intl
Explore the most affordable flight options available from Seattle to Incheon Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2024.

This Delta deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3110:40 amSEA - ICN
Nonstop12h 35mDelta
Tue 1/218:05 pmICN - SEA
Nonstop10h 14mDelta
Deal found 12/17$988
This Cheapflightsfares deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3110:40 amSEA - ICN
Nonstop12h 35mKorean Air
Wed 2/262:30 pmICN - SEA
1 stop17h 30mKorean Air
Deal found 12/17$1,001
This Gotogate deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/317:00 pmSEA - ICN
1 stop30h 20mTurkish Airlines
Tue 2/2512:10 amICN - SEA
1 stop33h 55mTurkish Airlines
Deal found 12/17$1,014
This Orbitz deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/315:45 amSEA - ICN
1 stop16h 30mMultiple Airlines
Wed 2/2610:50 amICN - SEA
2 stops20h 40mMultiple Airlines
Deal found 12/17$1,039
This Air Canada deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/305:45 amSEA - ICN
1 stop16h 30mAir Canada
Wed 1/154:55 pmICN - SEA
1 stop18h 35mAir Canada
Deal found 12/16$1,128
This American Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/3012:55 amSEA - ICN
1 stop22h 50mAmerican Airlines
Wed 2/266:50 pmICN - SEA
1 stop21h 33mAmerican Airlines
Deal found 12/17$1,204
This Gotogate deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3112:10 amSEA - ICN
1 stop25h 35mEVA Air
Fri 5/27:45 pmICN - SEA
1 stop15h 45mEVA Air
Deal found 12/16$1,275
This Gotogate deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2912:10 amSEA - ICN
1 stop26h 05mChina Airlines
Thu 1/168:15 pmICN - SEA
1 stop15h 00mChina Airlines
Deal found 12/17$1,348
This Gotogate deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3112:45 pmSEA - ICN
Nonstop12h 05mAsiana Airlines
Tue 1/146:15 pmICN - SEA
Nonstop9h 40mAsiana Airlines
Deal found 12/17$1,431
This oojo deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/255:47 pmSEA - ICN
2 stops27h 08mCathay Pacific
Wed 2/267:35 pmICN - SEA
2 stops31h 25mCathay Pacific
Deal found 12/16$1,475
This United Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/315:00 amSEA - ICN
2 stops31h 40mUnited Airlines
Wed 1/1512:45 pmICN - SEA
2 stops27h 24mUnited Airlines
Deal found 12/16$1,480
This Hawaiian Airlines deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/197:00 amSEA - ICN
1 stop19h 25mHawaiian Airlines
Wed 2/269:25 pmICN - SEA
1 stop16h 55mHawaiian Airlines
Deal found 12/16$1,714

Find flights from Seattle to Incheon Intl within your budget

Customize your flight search to find flights from Seattle to Incheon Intl 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, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 1/22

6:55 am-8:30 pm

1 stop20h 35m

Incheon Intl

Thu 1/30

1:05 pm-7:47 pm

2 stops23h 42m

$921

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 4/15

6:15 am-5:20 pm

1 stop19h 05m

Incheon Intl

Mon 5/26

7:20 pm-1:35 pm

Nonstop10h 15m

$922

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 3/11

1:10 am-11:20 am

1 stop18h 10m

Incheon Intl

Mon 3/24

12:25 pm-7:15 pm

1 stop22h 50m

$930

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sat 2/1

4:30 pm-4:45 pm

1 stop31h 15m

Incheon Intl

Sat 2/8

6:50 pm-10:49 am

1 stop32h 59m

$934

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 4/29

2:00 pm-5:45 pm

Nonstop11h 45m

Incheon Intl

Sat 5/10

6:15 pm-12:35 pm

Nonstop10h 20m

$950

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 1/27

5:45 am-3:15 pm

1 stop16h 30m

Incheon Intl

Wed 3/12

4:55 pm-2:30 pm

1 stop13h 35m

$965

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 1/22

10:41 am-4:15 pm

Nonstop12h 34m

Incheon Intl

Thu 1/30

8:05 pm-1:19 pm

Nonstop10h 14m

$988

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 1/22

7:00 pm-9:05 am

1 stop45h 05m

Incheon Intl

Wed 1/29

12:10 am-5:05 pm

1 stop33h 55m

$1,007

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 4/14

1:30 am-11:00 am

1 stop17h 30m

Incheon Intl

Tue 4/29

7:45 pm-7:30 pm

1 stop15h 45m

$1,021

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 2/4

5:55 pm-1:55 pm

2 stops27h 00m

Incheon Intl

Tue 2/18

3:00 pm-10:35 am

2 stops36h 35m

$1,059

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 21 results
1
2
3

Compare providers for flights from Seattle to Incheon Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Incheon Intl in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*2 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
ScholarTripPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*1 star
oojoPrice Accuracy3 starsTrust Score*3 stars
KAYAKPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Incheon Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Incheon Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Incheon Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Incheon Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Incheon Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Incheon Intl

Have a flexible travel schedule? Discover the best time to fly to Incheon Intl from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Seattle to Incheon Intl

Get recent, data-driven insights about flights from Seattle to Incheon Intl including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Incheon Intl. Price data was last updated on December 13, 2024.

The price you pay for your flight from Seattle to Incheon Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 11 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Seattle to Incheon Intl Airport?

Currently, October is the cheapest month in which you can book a flight from Seattle to Incheon Intl Airport (average of $1,086). Flying from Seattle to Incheon Intl Airport in June is currently the most expensive (average of $1,729). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to ICN?

Find hourly flight availability from Seattle to Incheon Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2024.

When flying from Seattle to Incheon Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 22% versus a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Seattle to Incheon Intl. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Incheon Intl Airport flight should consider departing on Thursday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Seattle to Incheon Intl Airport

Explore weekly flight availability from Seattle to Incheon Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 18, 2024.

The most flights from SEA to ICN are scheduled on a Monday (9 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (5 on average).

Rainfall in Incheon Intl by month

Plan your trip to Incheon Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Incheon Intl Airport ranges from 0.8 - 10.2 inches per month. July is typically the wettest month, when rainfall can reach 10.2 in. January is typically the driest time to visit Incheon Intl Airport when rainfall is around 0.8 in.

Temperature in Incheon Intl by month

Plan your trip to Incheon Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Incheon Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

Reviews of airlines servicing Incheon Intl

Get insights into the airlines that provide service to Incheon Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Incheon Intl. Reviews last updated December 18, 2024.
See what other customers who have flown with Korean Air, China Airlines and American Airlines from Seattle to Seoul have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,273 reviews

Overall

8.4

Boarding

8.4

Crew

8.6

Food

8.0

Comfort

8.2

Entertainment

8.0

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

EVA Air
8.4
Very good
1,273 reviews
EVA Air
8.4
Very good
1,273 reviews

Overall

8.4

Boarding

8.4

Crew

8.6

Food

8.0

Comfort

8.2

Entertainment

8.0

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

Korean Air
8.4
Very good
1,018 reviews
EVA Air
8.4
Very good
1,273 reviews

Overall

8.4

Boarding

8.4

Crew

8.6

Food

8.0

Comfort

8.2

Entertainment

8.0

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

Asiana Airlines
8.3
Very good
477 reviews
EVA Air
8.4
Very good
1,273 reviews

Overall

8.4

Boarding

8.4

Crew

8.6

Food

8.0

Comfort

8.2

Entertainment

8.0

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

China Airlines
8.3
Very good
754 reviews
EVA Air
8.4
Very good
1,273 reviews

Overall

8.4

Boarding

8.4

Crew

8.6

Food

8.0

Comfort

8.2

Entertainment

8.0

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

Delta
8.0
Very good
8,604 reviews
EVA Air
8.4
Very good
1,273 reviews

Overall

8.4

Boarding

8.4

Crew

8.6

Food

8.0

Comfort

8.2

Entertainment

8.0

Reviews

1 / 10

The food was HORRIBLE, the flight crew looked as though they’d rather be getting a root canal, and the bathrooms were disgusting.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Incheon Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Incheon Intl?

    If you book a flight to Incheon Intl from Seattle, you will be flying from Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 7 flights from Seattle/Tacoma Intl to Incheon Intl per day from 9 different airlines.

  • How popular is this Seattle to Incheon Intl Airport flight route?

    The Seattle/Tacoma Intl to Incheon Intl flight path was viewed by 222 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines flying from Seattle to Incheon Intl Airport round-trip?

    Korean Air, at $922, was found to be the cheapest airline from Seattle to Incheon Intl Airport.Alternate airlines to your destination round-trip include China Airlines and American Airlines. These flights start at 31% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Seattle to Incheon Intl Airport one-way?

    For one-way options, check prices for Air Canada. According to our data, you can fly for as low as $449. Users have also found prices from $472 and $478 on Asiana Airlines and American Airlines, respectively.

  • What are the most reliable airlines from Seattle to Incheon Intl Airport?

    Before booking your flight to Incheon Intl Airport from Seattle, check out the most reliable airlines to get you to your destination on time: Korean Air (68%), Delta (64%), Etihad Airways( 45%).

  • What are the cheapest flights from Seattle to Incheon Intl Airport?

    On average you can expect to pay $2,098 for a flight from Seattle to Incheon Intl Airport. The cheapest flight overall is $369 while the most popular route, (Seattle/Tacoma Intl - Incheon Intl) is currently priced at $895.

  • Can I find deals for flights from Seattle to Incheon Intl that include hotel bookings?

    Yes. In addition to deals on Seattle to Incheon Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Incheon Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Incheon Intl.

  • Can I find deals for business class flights from Seattle to Incheon Intl?

    Yes. Cheapflights offers flight deals from Seattle to Incheon Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Incheon Intl Airport?

    Currently, October is the cheapest month in which you can book a flight from Seattle to Incheon Intl Airport (average of $1,086). Flying from Seattle to Incheon Intl Airport in June is currently the most expensive (average of $1,729). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Incheon Intl

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Gimpo Intl flights
Portland to Incheon Intl flights
Portland to Gimpo Intl flights
Spokane to Incheon Intl flights
Pasco to Incheon Intl flights
Pullman to Incheon Intl flights

Top 9 airlines flying from Seattle to Incheon Intl

Discover the top 9 airlines that operate flights from Seattle to Incheon Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$600Average$775FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$769Average$1,478FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$850Average$1,021FlexibilityNo cancel feeOn-time67%
China AirlinesCheapest$856Average$945FlexibilityNo cancel feeOn-time70%
DeltaCheapest$936Average$1,412FlexibilityNo cancel feeOn-timeN/A
Turkish AirlinesCheapest$970Average$1,161FlexibilityNo cancel feeOn-time77%
Asiana AirlinesCheapest$980Average$1,296FlexibilityNo cancel feeOn-time76%
EVA AirCheapest$1,011Average$1,235FlexibilityNo cancel feeOn-time74%
Korean AirCheapest$1,038Average$1,364FlexibilityNo cancel feeOn-time81%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.