Incheon Intl

$523+ 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 3/25. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ICN
Mar 19 — Mar 261
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Find cheap flights from Seattle to Incheon Intl with Cheapflights

1. Tell us where you want to go
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The best prices from Seattle/Tacoma Intl to Incheon Intl are usually found in February or January, booked 18 days in advance, depart on a Monday or Tuesday 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 March 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$951
(Air Canada)

One-way from

$523
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,061

Good round-trip deal

$783 or less

Good one-way deal

$475 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Incheon Intl flight deals.
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Incheon Intl flights.
From Seattle/Tacoma Intl to Incheon Intl
One-way flight from Seattle/Tacoma Intl to Incheon Intl
Highest demand for flights based on searches. 18% potential increase in price ($290 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($44 potential savings vs. average RT price).
Average for round-trip flights in March 2025
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Incheon Intl.
Price to beat on a one-way flight from Seattle/Tacoma Intl to Incheon Intl.

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 March 14, 2025.

This Gotogate deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/301:45 pmSEA - ICN
1 stop34h 20mMultiple Airlines
Wed 10/1510:35 pmICN - SEA
2 stops26h 25mMultiple Airlines
Deal found 3/11$946
This Air Canada deal was found by Cheapflights users on 3/12. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/85:45 amSEA - ICN
1 stop18h 20mAir Canada
Tue 4/155:45 pmICN - SEA
1 stop20h 18mAir Canada
Deal found 3/12$951
This oojo deal was found by Cheapflights users on 3/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/61:10 amSEA - ICN
1 stop18h 05mChina Airlines
Mon 4/148:35 pmICN - SEA
1 stop14h 55mChina Airlines
Deal found 3/13$956
This FlightHub deal was found by Cheapflights users on 3/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/258:00 pmSEA - ICN
1 stop30h 20mTurkish Airlines
Thu 4/310:25 amICN - SEA
1 stop46h 50mTurkish Airlines
Deal found 3/13$972
This oojo deal was found by Cheapflights users on 3/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/112:30 amSEA - ICN
1 stop26h 15mEVA Air
Mon 4/72:05 pmICN - SEA
1 stop21h 25mEVA Air
Deal found 3/12$974
This Kiwi.com deal was found by Cheapflights users on 3/12. 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.
Wed 5/147:05 amSEA - ICN
1 stop19h 40mWestJet
Mon 5/198:45 pmICN - SEA
1 stop15h 43mWestJet
Deal found 3/12$980
This FlightHub deal was found by Cheapflights users on 3/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1311:00 amSEA - ICN
2 stops42h 30mHainan Airlines
Wed 4/1610:35 pmICN - SEA
2 stops26h 25mHainan Airlines
Deal found 3/12$997
This American Airlines deal was found by Cheapflights users on 3/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/1612:59 amSEA - ICN
1 stop22h 56mAmerican Airlines
Mon 3/315:25 pmICN - SEA
1 stop23h 23mAmerican Airlines
Deal found 3/13$1,061
This oojo deal was found by Cheapflights users on 3/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/284:15 pmSEA - ICN
2 stops28h 25mCathay Pacific
Mon 6/93:10 pmICN - SEA
2 stops33h 59mCathay Pacific
Deal found 3/12$1,084

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 March 14, 2025.

Fly from

Seattle

Fly to

Incheon Intl

Route

Depart

Return

Price

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 3/25

10:25 am-8:30 pm

2 stops42h 05m

Incheon Intl

Wed 4/2

12:50 pm-7:01 pm

1 stop22h 11m

$948

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 4/8

5:45 am-4:05 pm

1 stop18h 20m

Incheon Intl

Tue 4/15

5:45 pm-10:03 pm

1 stop20h 18m

$951

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 4/6

1:10 am-11:15 am

1 stop18h 05m

Incheon Intl

Mon 4/14

8:35 pm-7:30 pm

1 stop14h 55m

$956

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 3/25

8:00 pm-6:20 pm

1 stop30h 20m

Incheon Intl

Thu 4/3

10:25 am-5:15 pm

1 stop46h 50m

$972

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 4/1

12:30 am-6:45 pm

1 stop26h 15m

Incheon Intl

Mon 4/7

2:05 pm-7:30 pm

1 stop21h 25m

$974

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 5/14

7:05 am-6:45 pm

1 stop19h 40m

Incheon Intl

Mon 5/19

8:45 pm-8:28 pm

1 stop15h 43m

$980

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 3/16

12:59 am-3:55 pm

1 stop22h 56m

Incheon Intl

Mon 3/31

5:25 pm-12:48 am

1 stop23h 23m

$1,061

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 4/28

4:15 pm-12:40 pm

2 stops28h 25m

Incheon Intl

Mon 6/9

3:10 pm-9:09 am

2 stops33h 59m

$1,084

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Fri 5/30

7:05 am-6:45 pm

1 stop19h 40m

$523

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 3/30

4:30 pm-7:40 pm

1 stop35h 10m

$525

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/12

Showing 1-10 of 16 results
1
2

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
ScholarTripPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*2 stars
GurufarePrice Accuracy3 starsTrust Score*3 stars
FlightnetworkPrice Accuracy2 starsTrust Score*3 stars

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

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

The best insider tips for Seattle to Incheon Intl Airport flights

Find out what our experts recommend to make the most of 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”.

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.

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 from ICN to Seoul Station in 40-50 minutes. It's quick and convenient for reaching central Seoul.

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

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.

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 March 7, 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 $1,002). Flying from Seattle to Incheon Intl Airport in June is currently the most expensive (average of $1,671). 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 March 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 morning, which can drop the price by up to 20% 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 March 9, 2025.

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 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 March 14, 2025.

The most flights from SEA to ICN are scheduled on a Wednesday (12 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 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 March 14, 2025.
See what other customers who have flown with EVA Air, Korean Air and China Airlines from Seattle to Seoul have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

8.0

Overall

8.4

Food

8.1

Boarding

8.4

Crew

8.6

Comfort

8.3

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Entertainment

8.0

Overall

8.4

Food

8.1

Boarding

8.4

Crew

8.6

Comfort

8.3

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Entertainment

8.0

Overall

8.4

Food

8.1

Boarding

8.4

Crew

8.6

Comfort

8.3

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Entertainment

8.0

Overall

8.4

Food

8.1

Boarding

8.4

Crew

8.6

Comfort

8.3

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Entertainment

8.0

Overall

8.4

Food

8.1

Boarding

8.4

Crew

8.6

Comfort

8.3

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

8.0
Very good

Entertainment

8.0

Overall

8.4

Food

8.1

Boarding

8.4

Crew

8.6

Comfort

8.3

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

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 9 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?

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

    Air Canada, at $951, was found to be the cheapest airline from Seattle to Incheon Intl Airport.Alternate airlines to your destination round-trip include China Airlines and Turkish Airlines. These flights start at 26% 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 WestJet. According to our data, you can fly for as low as $526. Users have also found prices from $531 and $544 on Air Canada and China Airlines, respectively.

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

    Before booking your flight to Incheon Intl Airport from Seattle, check out the most reliable airlines to get you to your destination on time: Korean Air (85%), Delta (79%), Etihad Airways( 72%).

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

    On average you can expect to pay $2,133 for a flight from Seattle to Incheon Intl Airport. The cheapest flight overall is $426 while the most popular route, (Seattle/Tacoma Intl - Incheon Intl) is currently priced at $781.

  • 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 $1,002). Flying from Seattle to Incheon Intl Airport in June is currently the most expensive (average of $1,671). 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.

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 March 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$600Average$813FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$769Average$1,477FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$836Average$977FlexibilityNo cancel feeOn-time67%
China AirlinesCheapest$856Average$950FlexibilityNo cancel feeOn-time70%
Asiana AirlinesCheapest$931Average$1,264FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$967Average$1,342FlexibilityNo cancel feeOn-time81%
Turkish AirlinesCheapest$970Average$1,250FlexibilityNo cancel feeOn-time77%
DeltaCheapest$984Average$1,402FlexibilityNo cancel feeOn-timeN/A
EVA AirCheapest$986Average$1,092FlexibilityNo cancel feeOn-time74%
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