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Incheon Intl

$372+ 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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ICN
Jan 22 — Jan 291
Wed 1/22
Wed 1/29
1 adult, Economy
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The best prices from Seattle/Tacoma Intl to Incheon Intl are usually found in February or January, 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 January 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$914
(Asiana Airlines)

One-way from

$374
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,138
Provider with most accurate pricing for Seattle/Tacoma Intl-Incheon Intl flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Incheon Intl flights.
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From Seattle/Tacoma Intl to Incheon Intl
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One-way flight from Seattle/Tacoma Intl to Incheon Intl
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High demand for flights, 15% potential price rise
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Best time to find cheap flights, 3% potential price drop
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Average for round-trip flights in January 2025
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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 January 17, 2025.

This Asiana Airlines deal was found by Cheapflights users on 1/15. 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 Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/162:00 pmSEA - ICN
Nonstop11h 45mAsiana Airlines
Sun 5/46:15 pmICN - SEA
Nonstop10h 20mAsiana Airlines
Deal found 1/15$914
This Kiwi.com deal was found by Cheapflights users on 1/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/281:58 pmSEA - ICN
2 stops52h 37mMultiple Airlines
Wed 2/266:55 pmICN - SEA
1 stop15h 04mMultiple Airlines
Deal found 1/16$916
This Alaska Airlines deal was found by Cheapflights users on 1/16. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/97:00 amSEA - ICN
1 stop19h 25mAlaska Airlines
Sun 3/29:25 pmICN - SEA
1 stop19h 05mAlaska Airlines
Deal found 1/16$937
This Justfly.com deal was found by Cheapflights users on 1/16. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/115:45 amSEA - ICN
1 stop16h 30mAir Canada
Wed 2/194:55 pmICN - SEA
1 stop14h 35mAir Canada
Deal found 1/16$938
This American Airlines deal was found by Cheapflights users on 1/14. 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.
Wed 1/154:30 pmSEA - ICN
1 stop31h 15mAmerican Airlines
Fri 1/316:50 pmICN - SEA
1 stop21h 41mAmerican Airlines
Deal found 1/14$943
This Gotogate deal was found by Cheapflights users on 1/14. 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.
Mon 3/312:10 amSEA - ICN
1 stop26h 05mChina Airlines
Tue 12/212:25 pmICN - SEA
1 stop22h 50mChina Airlines
Deal found 1/14$947
This Hawaiian Airlines deal was found by Cheapflights users on 1/16. 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 5/18:15 amSEA - ICN
1 stop18h 45mHawaiian Airlines
Sat 5/109:25 pmICN - SEA
1 stop35h 25mHawaiian Airlines
Deal found 1/16$948
This oojo deal was found by Cheapflights users on 1/15. 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.
Tue 4/812:30 amSEA - ICN
1 stop18h 30mEVA Air
Wed 4/1612:00 pmICN - SEA
1 stop23h 30mEVA Air
Deal found 1/15$998
This oojo deal was found by Cheapflights users on 1/16. 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 2/57:00 pmSEA - ICN
1 stop30h 20mTurkish Airlines
Tue 3/1812:10 amICN - SEA
1 stop33h 55mTurkish Airlines
Deal found 1/16$1,007
This oojo deal was found by Cheapflights users on 1/15. 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.
Tue 2/115:55 pmSEA - ICN
2 stops25h 50mCathay Pacific
Mon 2/247:35 pmICN - SEA
2 stops31h 25mCathay Pacific
Deal found 1/15$1,052

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 January 17, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 4/16

2:00 pm-5:45 pm

Nonstop11h 45m

Incheon Intl

Mon 5/5

6:15 pm-12:35 pm

Nonstop10h 20m

$914

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 1/28

1:58 pm-11:35 am

2 stops52h 37m

Incheon Intl

Wed 2/26

6:55 pm-4:59 pm

1 stop15h 04m

$916

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 2/11

5:45 am-3:15 pm

1 stop16h 30m

Incheon Intl

Wed 2/19

4:55 pm-2:30 pm

1 stop14h 35m

$938

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 3/3

12:10 am-7:15 pm

1 stop26h 05m

Incheon Intl

Tue 12/2

12:25 pm-6:15 pm

1 stop22h 50m

$947

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 5/1

8:15 am-7:00 pm

1 stop18h 45m

Incheon Intl

Sat 5/10

9:25 pm-4:50 pm

1 stop35h 25m

$948

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 4/24

12:59 am-3:30 pm

1 stop22h 31m

Incheon Intl

Fri 5/2

5:25 pm-12:52 am

1 stop23h 27m

$995

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 2/5

7:00 pm-6:20 pm

1 stop30h 20m

Incheon Intl

Tue 3/25

12:10 am-6:05 pm

1 stop33h 55m

$1,007

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 4/13

1:30 am-11:00 am

1 stop17h 30m

Incheon Intl

Mon 5/5

12:00 pm-7:30 pm

1 stop23h 30m

$1,008

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 2/11

5:55 pm-12:45 pm

2 stops25h 50m

Incheon Intl

Mon 2/24

7:35 pm-10:00 am

2 stops31h 25m

$1,052

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 3/18

3:02 pm-10:50 pm

2 stops39h 48m

$372

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 22 results
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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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
ScholarTripPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*1 star
oojoPrice Accuracy3 starsTrust Score*2 stars
KAYAKPrice Accuracy-Trust Score*1 star

*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 January 10, 2025.

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 $1,723). 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 January 17, 2025.

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 January 17, 2025.

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 (8 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 January 17, 2025.
See what other customers who have flown with Asiana Airlines, China Airlines and EVA Air 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.
Korean Air
8.5
Very good
1,034 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Overall

8.5

Boarding

8.5

Entertainment

8.2

Reviews

1 / 10

It was a great experience in all aspects including passengers are respectful to each other. I will consider to use Korean Air again.

Korean Air
8.5
Very good
1,034 reviews
Korean Air
8.5
Very good
1,034 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Overall

8.5

Boarding

8.5

Entertainment

8.2

Reviews

1 / 10

It was a great experience in all aspects including passengers are respectful to each other. I will consider to use Korean Air again.

EVA Air
8.4
Very good
1,248 reviews
Korean Air
8.5
Very good
1,034 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Overall

8.5

Boarding

8.5

Entertainment

8.2

Reviews

1 / 10

It was a great experience in all aspects including passengers are respectful to each other. I will consider to use Korean Air again.

Asiana Airlines
8.3
Very good
466 reviews
Korean Air
8.5
Very good
1,034 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Overall

8.5

Boarding

8.5

Entertainment

8.2

Reviews

1 / 10

It was a great experience in all aspects including passengers are respectful to each other. I will consider to use Korean Air again.

China Airlines
8.2
Very good
737 reviews
Korean Air
8.5
Very good
1,034 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Overall

8.5

Boarding

8.5

Entertainment

8.2

Reviews

1 / 10

It was a great experience in all aspects including passengers are respectful to each other. I will consider to use Korean Air again.

Alaska Airlines
8.0
Very good
9,681 reviews
Korean Air
8.5
Very good
1,034 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Overall

8.5

Boarding

8.5

Entertainment

8.2

Reviews

1 / 10

It was a great experience in all aspects including passengers are respectful to each other. I will consider to use Korean Air again.

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 8 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 199 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?

    Asiana Airlines, at $914, was found to be the cheapest airline from Seattle to Incheon Intl Airport.Alternate airlines to your destination round-trip include Alaska Airlines and China 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 Asiana Airlines. According to our data, you can fly for as low as $472. Users have also found prices from $490 and $513 on Hawaiian Airlines and Alaska 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: Delta (70%), Korean Air (57%), Etihad Airways( 55%).

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

    On average you can expect to pay $1,529 for a flight from Seattle to Incheon Intl Airport. The cheapest flight overall is $367 while the most popular route, (Seattle/Tacoma Intl - Incheon Intl) is currently priced at $852.

  • 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 $1,723). 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

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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
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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 January 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$600Average$813FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$769Average$1,477FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$849Average$1,022FlexibilityNo cancel feeOn-time67%
China AirlinesCheapest$856Average$949FlexibilityNo cancel feeOn-time70%
Asiana AirlinesCheapest$948Average$1,292FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$970Average$1,204FlexibilityNo cancel feeOn-time77%
DeltaCheapest$985Average$1,407FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$986Average$1,358FlexibilityNo cancel feeOn-time81%
EVA AirCheapest$1,011Average$1,130FlexibilityNo cancel feeOn-time74%
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