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Incheon Intl

$395+ 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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ICN
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Incheon Intl are usually found in February or April, booked 18 days in advance, depart on a Monday or Wednesday and return on a Wednesday

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 July 3, 2025.

Round-trip from

$828
(FlightHub)

One-way from

$395
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,389

Good round-trip deal

$774 or less

Good one-way deal

$427 or less
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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Highest demand for flights based on searches. 13% potential increase in price ($192 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Incheon Intl.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Incheon Intl.
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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 July 3, 2025.

This FlightHub deal was found by Cheapflights users on 7/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2810:00 amSEA - ICN
1 stop14h 05mMultiple Airlines
Sat 9/610:40 amICN - SEA
2 stops19h 36mMultiple Airlines
Deal found 7/1$828
This Air Canada deal was found by Cheapflights users on 7/2. 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 10/207:15 pmSEA - ICN
1 stop28h 50mAir Canada
Mon 12/16:55 pmICN - SEA
1 stop12h 31mAir Canada
Deal found 7/2$836
This Gotogate deal was found by Cheapflights users on 7/1. 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.
Fri 9/261:15 pmSEA - ICN
2 stops37h 30mWestJet
Fri 10/108:45 pmICN - SEA
1 stop32h 14mWestJet
Deal found 7/1$848
This oojo deal was found by Cheapflights users on 7/2. 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.
Mon 10/131:10 amSEA - ICN
1 stop26h 25mChina Airlines
Tue 10/2812:25 pmICN - SEA
1 stop22h 50mChina Airlines
Deal found 7/2$870

Cheapflights Fare Finder

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 July 3, 2025.
Use the filters below to find and compare flights from Seattle to Incheon Intl Airport that are best for you.

Fly from

Seattle

Fly to

Incheon Intl

Route

Depart

Return

Price

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 8/28

10:00 am-4:05 pm

1 stop14h 05m

Incheon Intl

Sat 9/6

10:40 am-2:16 pm

2 stops19h 36m

$828

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 9/2

10:00 am-4:05 pm

1 stop14h 05m

Incheon Intl

Wed 10/15

5:45 pm-2:16 pm

1 stop12h 31m

$837

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Fri 9/26

1:15 pm-6:45 pm

2 stops37h 30m

Incheon Intl

Fri 10/10

8:45 pm-12:59 pm

1 stop32h 14m

$848

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 8/31

1:40 am-7:35 pm

1 stop25h 55m

Incheon Intl

Thu 10/23

8:35 pm-7:20 pm

1 stop14h 45m

$872

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 9/3

3:39 pm-9:35 pm

2 stops37h 56m

$395

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 9/3

7:05 am-6:45 pm

1 stop19h 40m

$418

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 9/9

7:15 pm-4:05 pm

1 stop28h 50m

$464

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

The best insider tips for Seattle to Incheon Intl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-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 original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to Incheon Intl Airport trip
Airlines
Korean Air

Enjoy lie-flat seats in Prestige class with 75” pitch on Boeing 787, 777, and 747 models.


Economy class offers a spacious 33”-34” pitch, surpassing many competitors like Delta's 30”-31”.

Read more about Korean Airby Yulia Denisyuk
Asiana Airlines

Asiana's A380 business suite features a 25”-wide seat converting to an 81” bed with duck-down bedding.


Economy Smartium on A350 offers 36” pitch for extra comfort, ideal for long-haul flights.

Read more about Asiana Airlinesby Marisa Garcia
Airports
SEA

Use SEA Spot Saver for free security screening appointments. Book online a few days before your flight to reduce wait times.

Read more about SEAby Brandon Schultz
ICN

Take the AREX express train for a quick 40-50 minute ride to Seoul Station from ICN. Convenient and efficient for city access.

Read more about ICNby Gabriel Leigh
Our travel experts
Yulia Denisyuk

Yulia Denisyuk

Expert on Korean Air

Yulia Denisyuk

Yulia Denisyuk

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Read more
Marisa Garcia

Marisa Garcia

Expert on Asiana Airlines

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Gabriel Leigh

Gabriel Leigh

Expert on ICN

Gabriel Leigh

Gabriel Leigh

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Brandon Schultz

Brandon Schultz

Expert on SEA

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more

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.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Incheon Intl Airport

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 June 27, 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 18 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, February is the cheapest month in which you can book a flight from Seattle to Incheon Intl Airport (average of $998). Flying from Seattle to Incheon Intl Airport in December is currently the most expensive (average of $1,635). 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 July 3, 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 44% versus a flight in the afternoon.

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 June 29, 2025.

Travelers seeking maximum savings on their Seattle to Incheon Intl Airport flight should consider departing on Wednesday evenings when fares are most often at their lowest. Friday afternoons 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 July 3, 2025.

The most flights from SEA to ICN are scheduled on a Tuesday (9 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 on average).

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 July 3, 2025.
Peruse reviews from past customers who have flown with China Airlines, WestJet, and Air Canada from Seattle to Incheon Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
China Airlines
8.3
Very good
744 reviews

Overall

8.3

Crew

8.5

Entertainment

8.0

Boarding

8.3

Food

7.8

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
China Airlines
8.3
Very good
744 reviews
China Airlines
8.3
Very good
744 reviews

Overall

8.3

Crew

8.5

Entertainment

8.0

Boarding

8.3

Food

7.8

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
WestJet
7.2
Good
2,917 reviews
China Airlines
8.3
Very good
744 reviews

Overall

8.3

Crew

8.5

Entertainment

8.0

Boarding

8.3

Food

7.8

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver
Air Canada
7.1
Good
9,681 reviews
China Airlines
8.3
Very good
744 reviews

Overall

8.3

Crew

8.5

Entertainment

8.0

Boarding

8.3

Food

7.8

Comfort

8.0

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2025

YVR - TPE

I like the system, but the problem is the food , thre is no option, as a chef i don't recommend the food is worst we keep our hungry until taipe from vancouver

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 10 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 200 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?

    Air Canada, at $836, was found to be the cheapest airline from Seattle to Incheon Intl Airport.Alternate airlines to your destination round-trip include WestJet and China Airlines. These flights start at 31% lower than the current average price 3 months from now.

  • 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 (73%), Korean Air (69%), Thai Airways( 32%).

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

    On average you can expect to pay $2,127 for a flight from Seattle to Incheon Intl Airport. The cheapest flight overall is $365 while the most popular route, (Seattle/Tacoma Intl - Incheon Intl) is currently priced at $829.

  • 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, February is the cheapest month in which you can book a flight from Seattle to Incheon Intl Airport (average of $998). Flying from Seattle to Incheon Intl Airport in December is currently the most expensive (average of $1,635). 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.
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Top 10 airlines flying from Seattle to Incheon Intl

Discover the top 10 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$167Average$1,329FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$182Average$1,099FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$657Average$974FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$763Average$1,550FlexibilityNo cancel feeOn-time85%
Air CanadaCheapest$814Average$917FlexibilityNo cancel feeOn-time67%
China AirlinesCheapest$886Average$1,057FlexibilityNo cancel feeOn-time70%
Asiana AirlinesCheapest$908Average$1,182FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$966Average$1,248FlexibilityNo cancel feeOn-time81%
Turkish AirlinesCheapest$970Average$1,207FlexibilityNo cancel feeOn-time77%
EVA AirCheapest$978Average$1,089FlexibilityNo cancel feeOn-time74%

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