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$534+ Cheap flights from Seattle (SEA) to South Korea

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 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ICN
May 5 — May 121
Mon 5/5
Mon 5/12
1 adult, Economy
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Cheap flight deals from Seattle to South Korea

Keep the following information in mind while searching for Seattle to South Korea flight deals. Data was last updated April 30, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$959
(Kiwi.com)

One-way from

$534
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,107

Good round-trip deal

$790 or less

Good one-way deal

$498 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Seoul (SEL) flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Seoul (SEL) flights.
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From Seattle/Tacoma Intl to South Korea
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One-way flight from Seattle/Tacoma Intl to South Korea
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Highest demand for flights based on searches. 19% potential increase in price ($295 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to South Korea.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to South Korea.
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Find flight deals from Seattle to South Korea

Cheapest flights from Seattle to South Korea
Explore the most affordable flight options available from Seattle to South Korea. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
Sun 5/256:59 pmSEA - ICN
1 stop33h 31mMultiple Airlines
Mon 6/26:20 pmICN - SEA
1 stop16h 36mMultiple Airlines
Deal found 4/28$959
This FlightHub deal was found by Cheapflights users on 4/28. 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.
Mon 9/221:10 amSEA - ICN
1 stop26h 25mChina Airlines
Tue 11/258:15 pmICN - SEA
1 stop15h 00mChina Airlines
Deal found 4/28$963
This Air Canada deal was found by Cheapflights users on 4/28. 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 9/15:30 amSEA - ICN
1 stop18h 35mAir Canada
Sun 11/236:50 pmICN - SEA
1 stop20h 16mAir Canada
Deal found 4/28$971
This oojo deal was found by Cheapflights users on 4/29. 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 9/112:30 amSEA - ICN
1 stop18h 30mEVA Air
Wed 10/17:45 pmICN - SEA
1 stop15h 45mEVA Air
Deal found 4/29$974
This oojo deal was found by Cheapflights users on 4/29. 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.
Thu 10/231:10 amSEA - PUS
1 stop18h 05mChina Airlines
Sat 11/157:45 pmPUS - SEA
1 stop15h 30mChina Airlines
Deal found 4/29$1,000
This Gotogate deal was found by Cheapflights users on 4/28. 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.
Wed 4/3011:35 pmSEA - ICN
1 stop27h 45mPhilippine Airlines
Thu 5/228:30 pmICN - SEA
1 stop38h 45mPhilippine Airlines
Deal found 4/28$1,017
This FlightHub deal was found by Cheapflights users on 4/29. 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 5/277:10 pmSEA - ICN
1 stop45h 30mTurkish Airlines
Tue 6/311:20 pmICN - SEA
1 stop33h 55mTurkish Airlines
Deal found 4/29$1,038
This oojo deal was found by Cheapflights users on 4/29. 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.
Fri 8/298:05 pmSEA - ICN
2 stops24h 35mCathay Pacific
Sun 9/143:10 pmICN - SEA
2 stops32h 57mCathay Pacific
Deal found 4/29$1,067
This EVA Air deal was found by Cheapflights users on 4/28. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/121:30 amSEA - GMP
1 stop24h 40mEVA Air
Fri 11/211:50 pmGMP - SEA
1 stop21h 20mEVA Air
Deal found 4/28$1,073
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 5/218:08 amSEA - CJU
2 stops31h 07mMultiple Airlines
Wed 5/2812:30 pmCJU - SEA
1 stop16h 00mMultiple Airlines
Deal found 4/29$1,088
This FlightHub deal was found by Cheapflights users on 4/28. 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.
Fri 9/1910:15 amSEA - ICN
1 stop37h 20mSingapore Airlines
Mon 9/2911:20 amICN - SEA
1 stop37h 25mSingapore Airlines
Deal found 4/28$1,100
This Trip.com deal was found by Cheapflights users on 4/28. 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.
Thu 10/231:10 amSEA - PUS
2 stops44h 10mMultiple Airlines
Sat 11/152:05 pmPUS - SEA
2 stops21h 10mMultiple Airlines
Deal found 4/28$1,109

Cheapflights Fare Finder

Customize your flight search to find flights from Seattle to South Korea 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 April 30, 2025.
Use the filters below to find and compare flights from Seattle to South Korea that are best for you.

Fly from

Seattle

Fly to

South Korea

Route

Depart

Return

Price

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 5/25

6:59 pm-8:30 pm

1 stop33h 31m

Incheon Intl

Mon 6/2

6:20 pm-6:56 pm

1 stop16h 36m

$959

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 5/6

1:10 am-7:35 pm

1 stop26h 25m

Incheon Intl

Mon 6/2

12:35 pm-7:30 pm

1 stop22h 55m

$970

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 5/6

12:50 am-11:00 am

1 stop18h 10m

Incheon Intl

Mon 7/21

1:45 pm-7:10 pm

1 stop21h 25m

$1,030

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 5/27

7:10 pm-8:40 am

1 stop45h 30m

Incheon Intl

Tue 6/3

11:20 pm-5:15 pm

1 stop33h 55m

$1,038

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 5/7

11:35 pm-7:20 pm

1 stop27h 45m

Incheon Intl

Sun 5/11

8:00 am-7:15 pm

1 stop27h 15m

$1,043

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Wed 5/21

8:08 am-7:15 am

2 stops31h 07m

Jeju City

Wed 5/28

12:30 pm-12:30 pm

1 stop16h 00m

$1,088

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 5/13

7:59 pm-12:40 pm

2 stops24h 41m

Incheon Intl

Tue 5/20

3:10 pm-8:56 am

2 stops33h 46m

$1,105

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Mon 5/5

1:50 am-7:15 pm

1 stop25h 25m

Seoul Gimpo Intl

Sat 7/19

1:50 pm-7:10 pm

1 stop21h 20m

$1,122

SeattleDaegu

SEA - TAE

SEATAE

Seattle/Tacoma Intl

Thu 6/12

1:15 am-7:25 pm

2 stops26h 10m

Daegu

Fri 6/20

8:50 am-4:10 pm

2 stops23h 20m

$1,155

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Mon 5/26

2:15 pm-5:00 pm

2 stops34h 45m

Busan Gimhae

Thu 6/19

5:55 pm-12:30 pm

2 stops34h 35m

$1,223

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 47 results
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Best time to book a flight from Seattle to South Korea

Have a flexible travel schedule? Discover the best time to fly to South Korea 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 South Korea

What is the cheapest month to book a flight from Seattle to South Korea?

Currently, February is the cheapest month in which you can book a flight from Seattle to South Korea (average of $1,001). Flying from Seattle to South Korea 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 KR?

Find hourly flight availability from Seattle to South Korea. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 30, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to South Korea as you normally would.

Weekly flight availability from Seattle to South Korea

Explore weekly flight availability from Seattle to South Korea. 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 April 30, 2025.

The most flights from SEA to KR0 are scheduled on a Monday (8 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in South Korea by month

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

In terms of precipitation, rainfall in South Korea 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 South Korea when rainfall is around 0.8 in.

Temperature in South Korea by month

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

If weather is an important factor for your trip to South Korea, 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 South Korea

Get insights into the airlines that provide service to South Korea. 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 South Korea. Reviews last updated April 30, 2025.
To help decide which airline to fly from Seattle to South Korea, see what other customers have to say about EVA Air, Korean Air and Japan Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,186 reviews

Overall

8.4

Crew

8.6

Food

8.1

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
EVA Air
8.4
Very good
1,186 reviews
EVA Air
8.4
Very good
1,186 reviews

Overall

8.4

Crew

8.6

Food

8.1

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Korean Air
8.4
Very good
1,066 reviews
EVA Air
8.4
Very good
1,186 reviews

Overall

8.4

Crew

8.6

Food

8.1

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Japan Airlines
8.3
Very good
1,459 reviews
EVA Air
8.4
Very good
1,186 reviews

Overall

8.4

Crew

8.6

Food

8.1

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
China Airlines
8.3
Very good
732 reviews
EVA Air
8.4
Very good
1,186 reviews

Overall

8.4

Crew

8.6

Food

8.1

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
ANA
8.3
Very good
852 reviews
EVA Air
8.4
Very good
1,186 reviews

Overall

8.4

Crew

8.6

Food

8.1

Boarding

8.4

Comfort

8.3

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Related info for your journey

Find useful and relevant information for your journey from Seattle to South Korea. 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 South Korea?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl (SEA) is the airport most travelers will use when flying to South Korea from Seattle.

  • How popular is this Seattle to South Korea flight route?

    This flight path from Seattle/Tacoma Intl to South Korea 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 to fly from Seattle to South Korea one-way?

    $559 is the cheapest one-way deal found within the past few days, from China Eastern. You may also be able to find cheap deals on Air Canada and WestJet, with prices starting from $574 and $578, respectively.

  • What are the most popular routes from Seattle to South Korea?

    Most travelers choose Seattle/Tacoma Intl - Incheon Intl, Seattle/Tacoma Intl - Seoul Gimpo Intl or Seattle/Tacoma Intl - Busan Gimhae when deciding on the best route from Seattle to South Korea.

  • What are the most reliable airlines from Seattle to South Korea?

    The top 3 most reliable airlines when flying from Seattle to South Korea are Korean Air (86%), Delta (85%) and Etihad Airways (77%).

  • What are the cheapest flights from Seattle to South Korea?

    The cheapest flight price from Seattle to South Korea is $422. On average you can expect to pay $1,566. The most popular route, (Seattle/Tacoma Intl - Incheon Intl), can usually be booked for $853.

  • Can I find deals for flights from Seattle to South Korea that include hotel bookings?

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

  • How can I find direct flights from Seattle to South Korea?

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

  • Can I find deals for business class flights from Seattle to South Korea?

    Yes. Cheapflights offers flight deals from Seattle to South Korea 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 South Korea?

    Currently, February is the cheapest month in which you can book a flight from Seattle to South Korea (average of $1,001). Flying from Seattle to South Korea 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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Top 9 airlines flying from Seattle to South Korea

Discover the top 9 airlines that operate flights from Seattle to South Korea. 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 April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$167Average$1,430FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$600Average$1,182FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$657Average$1,379FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$824Average$948FlexibilityNo cancel feeOn-time67%
China AirlinesCheapest$862Average$968FlexibilityNo cancel feeOn-time70%
Asiana AirlinesCheapest$915Average$1,229FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$966Average$1,365FlexibilityNo cancel feeOn-time81%
Turkish AirlinesCheapest$970Average$1,246FlexibilityNo cancel feeOn-time77%
EVA AirCheapest$978Average$1,089FlexibilityNo cancel feeOn-time74%

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