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$481+ 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 7/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ICN
May 20 — May 271
Tue 5/20
Tue 5/27
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 May 15, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$935
(Kiwi.com)

One-way from

$481
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,393

Good round-trip deal

$776 or less

Good one-way deal

$546 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. 16% potential increase in price ($240 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 15, 2025.

This FlightHub deal was found by Cheapflights users on 5/15. 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 8/181:40 amSEA - ICN
1 stop17h 35mChina Airlines
Sat 12/208:15 pmICN - SEA
1 stop15h 00mChina Airlines
Deal found 5/15$1,004
This Korean Air deal was found by Cheapflights users on 5/15. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/158:00 amSEA - ICN
1 stop17h 50mKorean Air
Fri 9/197:20 pmICN - SEA
Nonstop10h 20mKorean Air
Deal found 5/15$1,005
This Gotogate deal was found by Cheapflights users on 5/15. 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 9/910:00 amSEA - ICN
1 stop14h 05mMultiple Airlines
Mon 9/152:50 pmICN - SEA
2 stops19h 46mMultiple Airlines
Deal found 5/15$1,006
This Air Canada deal was found by Cheapflights users on 5/14. 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.
Sat 10/45:30 amSEA - ICN
1 stop18h 35mAir Canada
Sat 10/185:45 pmICN - SEA
1 stop20h 31mAir Canada
Deal found 5/14$1,011
This Gurufare deal was found by Cheapflights users on 5/15. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3011:50 pmSEA - ICN
1 stop18h 40mEVA Air
Thu 12/47:45 pmICN - SEA
1 stop15h 25mEVA Air
Deal found 5/15$1,014
This oojo deal was found by Cheapflights users on 5/15. 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.
Wed 9/2411:35 pmSEA - ICN
1 stop27h 45mPhilippine Airlines
Tue 9/308:30 pmICN - SEA
1 stop38h 45mPhilippine Airlines
Deal found 5/15$1,048
This ANA deal was found by Cheapflights users on 5/15. 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 ANA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/184:30 pmSEA - GMP
1 stop34h 05mANA
Fri 9/2612:40 pmGMP - SEA
1 stop17h 45mANA
Deal found 5/15$1,054
This oojo deal was found by Cheapflights users on 5/15. 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 9/145:59 pmSEA - ICN
2 stops26h 41mCathay Pacific
Sun 9/213:10 pmICN - SEA
2 stops32h 57mCathay Pacific
Deal found 5/15$1,078
This oojo deal was found by Cheapflights users on 5/15. 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.
Sat 10/182:15 pmSEA - ICN
Nonstop11h 40mAsiana Airlines
Sat 11/229:00 pmICN - SEA
Nonstop9h 55mAsiana Airlines
Deal found 5/15$1,099
This oojo deal was found by Cheapflights users on 5/15. 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 9/17:59 pmSEA - GMP
2 stops31h 16mEVA Air
Fri 9/121:50 pmGMP - SEA
1 stop21h 00mEVA Air
Deal found 5/15$1,110
This FlightHub deal was found by Cheapflights users on 5/15. 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.
Wed 5/217:10 pmSEA - ICN
1 stop45h 30mTurkish Airlines
Wed 6/1810:20 amICN - SEA
1 stop40h 15mTurkish Airlines
Deal found 5/15$1,111
This Alaska Airlines deal was found by Cheapflights users on 5/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/302:45 pmSEA - ICN
Nonstop11h 50mAlaska Airlines
Mon 12/18:35 pmICN - SEA
Nonstop9h 50mAlaska Airlines
Deal found 5/15$1,140

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 May 15, 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

Mon 8/18

1:40 am-11:15 am

1 stop17h 35m

Incheon Intl

Sat 12/20

8:15 pm-6:15 pm

1 stop15h 00m

$1,004

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 9/15

5:59 pm-5:00 am

1 stop19h 01m

Incheon Intl

Sat 9/20

7:20 pm-1:40 pm

Nonstop10h 20m

$1,005

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 9/9

10:00 am-4:05 pm

1 stop14h 05m

Incheon Intl

Mon 9/15

2:50 pm-6:36 pm

2 stops19h 46m

$1,006

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sat 10/4

5:30 am-4:05 pm

1 stop18h 35m

Incheon Intl

Sat 10/18

5:45 pm-10:16 pm

1 stop20h 31m

$1,011

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 10/30

11:50 pm-10:30 am

1 stop18h 40m

Incheon Intl

Thu 12/4

7:45 pm-6:10 pm

1 stop15h 25m

$1,014

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 9/24

11:35 pm-7:20 pm

1 stop27h 45m

Incheon Intl

Tue 9/30

8:30 pm-7:15 pm

1 stop38h 45m

$1,048

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Thu 9/18

4:30 pm-6:35 pm

1 stop34h 05m

Seoul Gimpo Intl

Fri 9/26

12:40 pm-2:25 pm

1 stop17h 45m

$1,054

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 8/31

7:59 pm-2:05 pm

2 stops26h 06m

Incheon Intl

Mon 9/15

8:05 pm-8:07 am

2 stops28h 02m

$1,068

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 7/24

12:30 pm-5:40 pm

1 stop37h 10m

Incheon Intl

Fri 8/8

10:20 am-5:15 pm

1 stop46h 55m

$1,088

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sat 10/18

2:15 pm-5:55 pm

Nonstop11h 40m

Incheon Intl

Sat 11/22

9:00 pm-1:55 pm

Nonstop9h 55m

$1,099

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/15

Showing 1-10 of 44 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 $1,002). 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 May 15, 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 May 15, 2025.

The most flights from SEA to KR0 are scheduled on a Monday (8 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (8 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 May 15, 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
1,192 reviews

Overall

8.4

Comfort

8.3

Boarding

8.4

Food

8.1

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
EVA Air
8.4
Very good
1,192 reviews
EVA Air
8.4
Very good
1,192 reviews

Overall

8.4

Comfort

8.3

Boarding

8.4

Food

8.1

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
Korean Air
8.4
Very good
1,073 reviews
EVA Air
8.4
Very good
1,192 reviews

Overall

8.4

Comfort

8.3

Boarding

8.4

Food

8.1

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
Japan Airlines
8.3
Very good
1,473 reviews
EVA Air
8.4
Very good
1,192 reviews

Overall

8.4

Comfort

8.3

Boarding

8.4

Food

8.1

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
China Airlines
8.3
Very good
732 reviews
EVA Air
8.4
Very good
1,192 reviews

Overall

8.4

Comfort

8.3

Boarding

8.4

Food

8.1

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
ANA
8.3
Very good
866 reviews
EVA Air
8.4
Very good
1,192 reviews

Overall

8.4

Comfort

8.3

Boarding

8.4

Food

8.1

Entertainment

8.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.

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?

    $540 is the cheapest one-way deal found within the past few days, from ANA. You may also be able to find cheap deals on China Eastern and EVA Air, with prices starting from $549 and $579, 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 Delta (87%), Korean Air (86%) and Etihad Airways (75%).

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

    The cheapest flight price from Seattle to South Korea is $419. On average you can expect to pay $1,539. The most popular route, (Seattle/Tacoma Intl - Incheon Intl), can usually be booked for $730.

  • 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 $1,002). 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 10 airlines flying from Seattle to South Korea

Discover the top 10 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 May 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$164Average$1,360FlexibilityNo cancel feeOn-time75%
DeltaCheapest$167Average$1,416FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$657Average$1,379FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$698Average$1,203FlexibilityNo cancel feeOn-time85%
Air CanadaCheapest$828Average$951FlexibilityNo cancel feeOn-time67%
China AirlinesCheapest$835Average$969FlexibilityNo cancel feeOn-time70%
Asiana AirlinesCheapest$913Average$1,222FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$966Average$1,321FlexibilityNo cancel feeOn-time81%
Turkish AirlinesCheapest$970Average$1,214FlexibilityNo cancel feeOn-time77%
EVA AirCheapest$978Average$1,089FlexibilityNo cancel feeOn-time74%

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