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Incheon Intl

$371+ 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 10/30. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ICN
Nov 13 — Nov 201
Thu 11/13
Thu 11/20
1 adult, Economy
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Find cheap flights from Seattle to Incheon Intl with Cheapflights

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Incheon Intl are usually found in September or February, booked 20 days in advance, depart on a Wednesday or Monday 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 October 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$746
(Booking.com)

One-way from

$371
(Mytrip)

Popular in

June

Cheapest in

September

Average price

$1,059

Good round-trip deal

$674 or less

Good one-way deal

$374 or less
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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Highest demand for flights based on searches. 16% potential increase in price ($221 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($37 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 14, 2025.

This Booking.com deal was found by Cheapflights users on 10/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/185:50 amSEA - ICN
1 stop18h 20mAir Canada
Tue 12/166:55 pmICN - SEA
1 stop12h 36mAir Canada
Deal found 10/13$746
This Booking.com deal was found by Cheapflights users on 10/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/125:50 amSEA - ICN
1 stop18h 20mAir Canada
Sat 11/226:55 pmICN - SEA
1 stop20h 11mAir Canada
Deal found 10/13$747
This Gotogate deal was found by Cheapflights users on 10/13. 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.
Thu 11/2710:05 amSEA - ICN
2 stops41h 55mMultiple Airlines
Thu 12/46:55 pmICN - SEA
1 stop17h 21mMultiple Airlines
Deal found 10/13$749
This Gotogate deal was found by Cheapflights users on 10/12. 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.
Thu 11/610:05 amSEA - ICN
2 stops41h 55mMultiple Airlines
Wed 11/126:55 pmICN - SEA
1 stop17h 21mMultiple Airlines
Deal found 10/12$758
This Kiwi.com deal was found by Cheapflights users on 10/13. 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.
Fri 10/3110:08 amSEA - ICN
1 stop27h 02mMultiple Airlines
Sun 11/99:20 pmICN - SEA
2 stops30h 02mMultiple Airlines
Deal found 10/13$759
This Trip.com deal was found by Cheapflights users on 10/13. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/278:00 pmSEA - ICN
1 stop28h 10mAir Canada
Sun 11/96:55 pmICN - SEA
1 stop20h 11mAir Canada
Deal found 10/13$761
This flugladen.de deal was found by Cheapflights users on 10/13. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3012:10 amSEA - ICN
Nonstop12h 10mMultiple Airlines
Sat 11/86:55 pmICN - SEA
1 stop31h 36mMultiple Airlines
Deal found 10/13$762
This Kiwi.com deal was found by Cheapflights users on 10/13. 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.
Fri 10/3110:08 amSEA - ICN
1 stop27h 02mMultiple Airlines
Fri 11/78:35 pmICN - SEA
Nonstop10h 20mMultiple Airlines
Deal found 10/13$763
This CrystalTravel deal was found by Cheapflights users on 10/12. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/812:10 amSEA - ICN
Nonstop12h 10mAsiana Airlines
Tue 11/189:00 pmICN - SEA
Nonstop9h 55mAsiana Airlines
Deal found 10/12$765
This CrystalTravel deal was found by Cheapflights users on 10/13. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/912:10 amSEA - ICN
Nonstop12h 10mAsiana Airlines
Mon 11/179:00 pmICN - SEA
Nonstop9h 55mAsiana Airlines
Deal found 10/13$766
This Kiwi.com deal was found by Cheapflights users on 10/12. 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.
Thu 11/1310:05 amSEA - ICN
2 stops41h 55mMultiple Airlines
Sun 12/79:20 pmICN - SEA
2 stops30h 02mMultiple Airlines
Deal found 10/12$769

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 October 14, 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

Sun 11/2

11:15 am-4:30 pm

Nonstop12h 15m

Incheon Intl

Sun 11/16

4:10 pm-9:00 am

Nonstop9h 50m

$826

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 11/9

11:00 am-3:55 pm

Nonstop11h 55m

Incheon Intl

Sun 11/16

4:10 pm-9:00 am

Nonstop9h 50m

$829

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 11/2

11:15 am-4:30 pm

Nonstop12h 15m

Incheon Intl

Fri 11/14

8:05 pm-1:20 pm

Nonstop10h 15m

$830

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 11/3

12:10 am-5:20 am

Nonstop12h 10m

Incheon Intl

Sat 11/15

9:00 pm-1:55 pm

Nonstop9h 55m

$831

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 10/30

7:25 am-5:40 pm

1 stop18h 15m

Incheon Intl

Thu 11/6

4:10 pm-9:00 am

Nonstop9h 50m

$834

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 11/10

7:10 am-5:40 pm

1 stop17h 30m

Incheon Intl

Mon 11/17

4:10 pm-9:00 am

Nonstop9h 50m

$834

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 11/4

7:10 am-5:40 pm

1 stop17h 30m

Incheon Intl

Mon 11/17

4:10 pm-9:00 am

Nonstop9h 50m

$834

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 11/5

7:10 am-5:40 pm

1 stop17h 30m

Incheon Intl

Tue 11/18

4:10 pm-9:00 am

Nonstop9h 50m

$834

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 11/5

7:10 am-5:40 pm

1 stop17h 30m

Incheon Intl

Mon 11/17

8:05 pm-1:20 pm

Nonstop10h 15m

$837

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Fri 10/31

7:25 am-5:40 pm

1 stop18h 15m

Incheon Intl

Fri 11/7

4:00 pm-10:25 pm

1 stop23h 25m

$844

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/14

Showing 1-10 of 21 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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust 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
oojoPrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
ScholarTripPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
BudgetAirPrice Accuracy1 starTrust 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 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.

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 October 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 20 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, August is the cheapest month in which you can book a flight from Seattle to Incheon Intl Airport (average of $206). Flying from Seattle to Incheon Intl Airport in July is currently the most expensive (average of $977). 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 October 14, 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 48% 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 October 12, 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.

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

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 October 14, 2025.
Peruse reviews from past customers who have flown with Korean Air, China Airlines, and Asiana Airlines 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.
Korean Air
8.4
Very good
1,149 reviews

Entertainment

8.2

Boarding

8.5

Overall

8.4

Food

8.1

Crew

8.7

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,149 reviews
Korean Air
8.4
Very good
1,149 reviews

Entertainment

8.2

Boarding

8.5

Overall

8.4

Food

8.1

Crew

8.7

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
China Airlines
8.3
Very good
768 reviews
Korean Air
8.4
Very good
1,149 reviews

Entertainment

8.2

Boarding

8.5

Overall

8.4

Food

8.1

Crew

8.7

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Asiana Airlines
8.2
Very good
486 reviews
Korean Air
8.4
Very good
1,149 reviews

Entertainment

8.2

Boarding

8.5

Overall

8.4

Food

8.1

Crew

8.7

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Delta
8.0
Very good
7,977 reviews
Korean Air
8.4
Very good
1,149 reviews

Entertainment

8.2

Boarding

8.5

Overall

8.4

Food

8.1

Crew

8.7

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Air Canada
7.1
Good
10,298 reviews
Korean Air
8.4
Very good
1,149 reviews

Entertainment

8.2

Boarding

8.5

Overall

8.4

Food

8.1

Crew

8.7

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

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 6 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.

  • How long is the flight from Seattle to Incheon Intl Airport?

    For as low as $829, Korean Air can have you in Incheon Intl Airport from Seattle in 11h 55m. The distance from Seattle to Incheon Intl Airport is about 5200 mi. All flights are typically nonstop.

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

    Delta, at $167, was found to be the cheapest airline from Seattle to Incheon Intl Airport.Alternate airlines to your destination round-trip include Alaska Airlines and United Airlines. These flights start at 85% 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 Hawaiian Airlines. According to our data, you can fly for as low as $426. Users have also found prices from $429 and $429 on United 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 (57%), Alaska Airlines (46%), Hawaiian Airlines( 46%).

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

    On average you can expect to pay $1,363 for a flight from Seattle to Incheon Intl Airport. The cheapest flight overall is $326 while the most popular route, (Seattle/Tacoma Intl - Incheon Intl) is currently priced at $712.

  • 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, August is the cheapest month in which you can book a flight from Seattle to Incheon Intl Airport (average of $206). Flying from Seattle to Incheon Intl Airport in July is currently the most expensive (average of $977). 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
Suwon
Seongnam

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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
Portland to Gimpo Intl flights
Spokane to Incheon Intl flights
Pasco to Incheon Intl flights
Pullman to Incheon Intl flights

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 October 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$167Average$1,182FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$190Average$982FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$282Average$865FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$282Average$1,135FlexibilityNo cancel feeOn-time85%
Air CanadaCheapest$672Average$958FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$802Average$1,093FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$852Average$1,185FlexibilityNo cancel feeOn-time81%
China AirlinesCheapest$886Average$1,063FlexibilityNo cancel feeOn-time70%
EVA AirCheapest$978Average$1,089FlexibilityNo cancel feeOn-time74%
Turkish AirlinesCheapest$1,007Average$1,247FlexibilityNo cancel feeOn-time77%

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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.