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

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.
ICN — SEA
ene. 27 — feb. 31
lun. 1/27
lun. 2/3
1 adult, Economy
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The best prices from Incheon Intl to Seattle/Tacoma Intl are usually found in November or January, booked 76 days in advance, depart on a Tuesday or Monday and return on a Tuesday

Cheap flight deals from Incheon Intl to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Incheon Intl (ICN) to Seattle (SEA). 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 enero 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$685
(Gotogate)

One-way from

$359
(Kiwi.com)

Popular in

August

Cheapest in

November

Average price

$812

Good round-trip deal

$819 or less

Good one-way deal

$700 or less
Provider with most accurate pricing for Incheon Intl-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Incheon Intl-Seattle/Tacoma Intl flights.
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From Incheon Intl to Seattle/Tacoma Intl
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One-way flight from Incheon Intl to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 20% potential increase in price ($256 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($43 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Price to beat on a round-trip flight from Incheon Intl to Seattle/Tacoma Intl.
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Price to beat on a one-way flight from Incheon Intl to Seattle/Tacoma Intl.
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Find flight deals from Incheon Intl to Seattle

Cheapest flights from Incheon Intl to Seattle
Explore the most affordable flight options available from Incheon Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 22, 2025.

This Delta deal was found by Cheapflights users on 1/21. 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.
lun. 2/178:05 pmICN - SEA
Nonstop10h 25mDelta
lun. 2/2410:44 amSEA - ICN
Nonstop12h 31mDelta
Deal found 1/21$685
This Gotogate deal was found by Cheapflights users on 1/22. 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.
lun. 2/34:55 pmICN - SEA
1 stop14h 35mAir Canada
lun. 2/1710:35 amSEA - ICN
1 stop35h 40mAir Canada
Deal found 1/22$686
This United Airlines deal was found by Cheapflights users on 1/21. 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.
lun. 2/1712:45 pmICN - SEA
1 stop20h 09mUnited Airlines
mar. 2/257:00 amSEA - ICN
1 stop16h 15mUnited Airlines
Deal found 1/21$690
This Gotogate deal was found by Cheapflights users on 1/21. 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.
mié. 2/196:15 pmICN - SEA
Nonstop9h 40mAsiana Airlines
sáb. 2/2212:45 pmSEA - ICN
Nonstop12h 05mAsiana Airlines
Deal found 1/21$697
This Gotogate deal was found by Cheapflights users on 1/21. 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.
mié. 2/54:10 pmICN - SEA
Nonstop9h 50mKorean Air
mié. 2/1911:00 amSEA - ICN
Nonstop11h 55mKorean Air
Deal found 1/21$700
This Gotogate deal was found by Cheapflights users on 1/21. 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.
mié. 2/510:35 pmICN - SEA
2 stops26h 25mHainan Airlines
jue. 3/610:00 amSEA - ICN
2 stops42h 30mHainan Airlines
Deal found 1/21$710
This Air Canada deal was found by Cheapflights users on 1/21. 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.
jue. 5/15:45 pmICN - SEA
1 stop12h 28mMultiple Airlines
lun. 5/1210:00 amSEA - ICN
2 stops19h 40mMultiple Airlines
Deal found 1/21$713
This American Airlines deal was found by Cheapflights users on 1/20. 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.
mié. 2/126:50 pmICN - SEA
2 stops33h 09mAmerican Airlines
mar. 2/2512:43 amSEA - ICN
1 stop23h 02mAmerican Airlines
Deal found 1/20$726
This Hawaiian Airlines deal was found by Cheapflights users on 1/21. 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.
lun. 10/139:25 pmICN - SEA
1 stop16h 20mHawaiian Airlines
mié. 10/293:55 pmSEA - ICN
1 stop35h 30mHawaiian Airlines
Deal found 1/21$848

Find flights from Incheon Intl to Seattle within your budget

Customize your flight search to find flights from Incheon Intl to Seattle 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 enero 22, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

mar. 2/11

4:55 pm-2:30 pm

1 stop14h 35m

Seattle/Tacoma Intl

vie. 2/21

5:45 am-3:15 pm

1 stop16h 30m

$685

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

lun. 2/3

12:45 pm-1:32 pm

1 stop17h 47m

Seattle/Tacoma Intl

mié. 2/5

7:00 am-4:15 pm

1 stop16h 15m

$690

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

vie. 4/11

6:15 pm-12:30 pm

Nonstop10h 15m

Seattle/Tacoma Intl

vie. 4/25

2:05 pm-5:45 pm

Nonstop11h 40m

$696

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

lun. 2/10

8:05 pm-1:30 pm

Nonstop10h 25m

Seattle/Tacoma Intl

dom. 3/2

6:10 am-5:40 pm

1 stop18h 30m

$698

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

lun. 2/3

4:10 pm-9:00 am

Nonstop9h 50m

Seattle/Tacoma Intl

lun. 2/17

11:00 am-3:55 pm

Nonstop11h 55m

$703

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

lun. 4/21

5:45 pm-2:23 pm

1 stop12h 38m

Seattle/Tacoma Intl

lun. 5/12

10:00 am-9:40 pm

2 stops19h 40m

$712

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

mar. 3/18

12:25 pm-7:15 pm

1 stop22h 50m

Seattle/Tacoma Intl

dom. 3/30

1:10 am-11:15 am

1 stop18h 05m

$871

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

mar. 3/18

7:30 am-7:02 pm

2 stops27h 32m

$359

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

mié. 2/5

10:35 pm-8:00 am

2 stops26h 25m

$402

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

vie. 2/21

4:55 pm-10:07 pm

1 stop22h 12m

$478

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/22

Showing 1-10 of 15 results
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Compare providers for flights from Incheon Intl to Seattle

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 Incheon Intl to Seattle in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*2 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 Incheon Intl Airport-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Incheon Intl Airport-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Incheon Intl Airport-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Incheon Intl Airport-Seattle 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 Incheon Intl Airport-Seattle 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 Incheon Intl to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Incheon Intl 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 Incheon Intl to Seattle

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

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

Use this chart to determine the optimal time to book a round-trip flight from Incheon Intl to Seattle. Price data was last updated on January 17, 2025.

To ensure you get the cheapest price possible for a flight from Incheon Intl Airport to Seattle, you should look to book at least 76 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from Incheon Intl Airport to Seattle (average of $238). Flying from Incheon Intl Airport to Seattle in July is currently the most expensive (average of $411). 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 ICN to SEA?

Find hourly flight availability from Incheon Intl to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated enero 22, 2025.

One of the essential ways to save on airfare from Incheon Intl Airport to Seattle is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the morning could potentially save you up to 18% on airfare.

Weekly flight availability from Incheon Intl Airport to Seattle

Explore weekly flight availability from Incheon Intl to Seattle. 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 enero 22, 2025.

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

Rainfall in Seattle by month

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

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

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

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated enero 22, 2025.
Read reviews from past customers who have flown Delta, Air Canada and Asiana Airlines from Seoul to Seattle. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.5
Very good
1,039 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Overall

8.5

Boarding

8.5

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Korean Air
8.5
Very good
1,039 reviews
Korean Air
8.5
Very good
1,039 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Overall

8.5

Boarding

8.5

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

EVA Air
8.4
Very good
1,252 reviews
Korean Air
8.5
Very good
1,039 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Overall

8.5

Boarding

8.5

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Asiana Airlines
8.3
Very good
466 reviews
Korean Air
8.5
Very good
1,039 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Overall

8.5

Boarding

8.5

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

China Airlines
8.2
Very good
737 reviews
Korean Air
8.5
Very good
1,039 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Overall

8.5

Boarding

8.5

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Delta
8.0
Very good
8,512 reviews
Korean Air
8.5
Very good
1,039 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Overall

8.5

Boarding

8.5

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Related info for your journey

Find useful and relevant information for your journey from Incheon Intl to Seattle. 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 into for flights to Seattle from Incheon Intl?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl is the airport most travelers will use when flying to Seattle from Incheon Intl. Booking flights from Incheon Intl to Seattle/Tacoma Intl (SEA) should be relatively easy as there are 9 daily inbound flights from Incheon Intl from 6 different airlines.

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

    This flight path from Incheon Intl to Seattle/Tacoma Intl was viewed by 1 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 Incheon Intl Airport to Seattle round-trip?

    Flying on Air Canada is currently your cheapest option to Seattle, with prices starting at $685. Additional round-trip tickets that might be worth considering are offered by United Airlines and Asiana Airlines, with the lowest prices starting at $690 and $696, respectively. Air Canada is priced at 31% lower than the current average price of a flight leaving 3 months from now.

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

    The cheapest airline one-way is Hainan Airlines, with whom users have recently found tickets for as low as $402. However, be on the lookout for offers from Air Canada and China Airlines, as they are both options that can get you from Incheon Intl Airport to Seattle for a low price.

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

    Before booking your flight to Seattle from Incheon Intl Airport, check out the most reliable airlines to get you to your destination on time: Delta (48%), Korean Air (48%), Etihad Airways( 34%).

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

    Looking for the cheapest flight from Incheon Intl Airport to Seattle? While on average our users pay $1,507, our data indicates the cheapest price to be $595. The most popular route (Incheon Intl - Seattle/Tacoma Intl), is priced around $644.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Incheon Intl to Seattle 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 Incheon Intl Airport to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Incheon Intl Airport to Seattle (average of $238). Flying from Incheon Intl Airport to Seattle in July is currently the most expensive (average of $411). 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

Traveling to a place near Incheon Intl Airport?

Book flights to Incheon Intl Airport if you plan to visit one of these locations
SeaTac
Tukwila
Renton
Tacoma
Lacey
Federal Way
Ocean Shores
Leavenworth
Olympia
Marysville
Centralia
Cle Elum
Mukilteo
Aberdeen
Lakewood
Issaquah
Shoreline
Lynnwood
Shelton
Silverdale

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Incheon Intl to Seattle

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

Top 6 airlines flying from Incheon Intl to Seattle

Discover the top 6 airlines that operate flights from Incheon Intl to Seattle. 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 enero 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$538Average$718FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$615Average$878FlexibilityNo cancel feeOn-time69%
Asiana AirlinesCheapest$665Average$1,066FlexibilityNo cancel feeOn-time76%
DeltaCheapest$687Average$1,149FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$695Average$1,213FlexibilityNo cancel feeOn-time81%
Air CanadaCheapest$748Average$834FlexibilityNo cancel feeOn-time67%
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