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Jeju City

$618+ Cheap flights from Seattle (SEA) to Jeju City (CJU)

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 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CJU
Jun 4 — Jun 111
Thu 6/4
Thu 6/11
1 adult, Economy
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Cheap flight deals from Seattle to Jeju City

Cheapest flights from Seattle to Jeju City
Explore the most affordable flight options available from Seattle to Jeju City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 5, 2026.

This Trip.com deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/712:25 pm
SEA
-
CJU
1 stop26h 05m
Cathay Pacific
Wed 9/167:30 am
CJU
-
SEA
1 stop18h 35m
Cathay Pacific
Deal found 5/2$1,113
This Kiwi.com deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/511:00 am
SEA
-
CJU
1 stop35h 25m
Multiple Airlines
Thu 9/177:30 am
CJU
-
SEA
2 stops23h 45m
Multiple Airlines
Deal found 5/2$1,172
This Kiwi.com deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/511:00 am
SEA
-
CJU
1 stop35h 25m
Multiple Airlines
Tue 9/157:30 am
CJU
-
SEA
2 stops23h 45m
Multiple Airlines
Deal found 5/2$1,182
This Kiwi.com deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/511:00 am
SEA
-
CJU
1 stop35h 25m
Multiple Airlines
Wed 9/167:25 am
CJU
-
SEA
2 stops22h 15m
Multiple Airlines
Deal found 5/2$1,229
This Kiwi.com deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/811:00 am
SEA
-
CJU
1 stop18h 05m
Multiple Airlines
Thu 9/177:30 am
CJU
-
SEA
2 stops23h 45m
Multiple Airlines
Deal found 5/2$1,246
This Kiwi.com deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/811:00 am
SEA
-
CJU
1 stop18h 05m
Multiple Airlines
Tue 9/157:30 am
CJU
-
SEA
2 stops23h 45m
Multiple Airlines
Deal found 5/2$1,256
This Kiwi.com deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/811:00 am
SEA
-
CJU
1 stop18h 05m
Multiple Airlines
Mon 9/147:30 am
CJU
-
SEA
2 stops23h 45m
Multiple Airlines
Deal found 5/2$1,258
This Kiwi.com deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/312:10 am
SEA
-
CJU
2 stops28h 25m
Multiple Airlines
Wed 9/1610:30 am
CJU
-
SEA
1 stop21h 40m
Multiple Airlines
Deal found 5/2$1,279
This Kiwi.com deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/811:00 am
SEA
-
CJU
1 stop27h 10m
Multiple Airlines
Fri 9/1811:00 am
CJU
-
SEA
2 stops20h 15m
Multiple Airlines
Deal found 5/2$1,283
This Kiwi.com deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/61:15 am
SEA
-
CJU
1 stop24h 15m
Multiple Airlines
Thu 9/1710:40 am
CJU
-
SEA
1 stop21h 30m
Multiple Airlines
Deal found 5/2$1,300
This Kiwi.com deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/61:15 am
SEA
-
CJU
1 stop24h 15m
Multiple Airlines
Sun 9/1310:40 am
CJU
-
SEA
1 stop21h 30m
Multiple Airlines
Deal found 5/2$1,303
This Kiwi.com deal was found by Cheapflights users on 5/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/812:25 pm
SEA
-
CJU
1 stop26h 05m
Multiple Airlines
Wed 9/167:30 am
CJU
-
SEA
1 stop18h 35m
Multiple Airlines
Deal found 5/2$1,312

Find flight deals from Seattle to Jeju City

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Jeju City (CJU). 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 May 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,113
(Trip.com)

One-way from

$618
(Kiwi.com)
Provider with most accurate pricing for Seattle/Tacoma Intl-Jeju City flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Jeju City flights.
Search Deals
From Seattle/Tacoma Intl to Jeju City
Search Deals
One-way flight from Seattle/Tacoma Intl to Jeju City
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Jeju City 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 5, 2026.
Use the filters below to find and compare flights from Seattle to Jeju City that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Sat 9/5

11:00 am-2:25 pm

1 stop35h 25m

Jeju City

Wed 9/16

7:25 am-1:40 pm

2 stops22h 15m

$1,229

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Mon 9/7

1:15 am-5:30 pm

1 stop24h 15m

Jeju City

Mon 9/14

10:20 am-4:10 pm

1 stop21h 50m

$1,349

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Tue 9/8

11:00 am-9:05 pm

1 stop18h 05m

Jeju City

Sun 9/13

7:30 am-1:37 pm

2 stops22h 07m

$1,355

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Mon 6/1

11:08 pm-7:15 am

2 stops40h 07m

Jeju City

Mon 6/8

3:55 pm-1:35 pm

1 stop13h 40m

$1,367
Quickest round-trip

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Sun 8/16

1:15 am-9:35 am

1 stop16h 20m

Jeju City

Mon 8/31

10:20 am-4:35 pm

1 stop22h 15m

$1,376

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Mon 9/7

12:25 pm-6:30 am

1 stop26h 05m

Jeju City

Mon 9/14

7:30 am-10:20 am

1 stop18h 50m

$1,634

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Sat 7/25

10:15 am-7:25 am

1 stop29h 10m

Jeju City

Fri 8/7

9:30 am-8:45 am

1 stop39h 15m

$1,743

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Tue 8/18

12:25 pm-6:30 am

1 stop26h 05m

Jeju City

Wed 8/26

7:30 am-10:20 am

1 stop18h 50m

$2,085
Cheapest one-way
Quickest one-way

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Sat 8/22

11:00 am-2:25 pm

1 stop35h 25m

$678

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Mon 6/15

1:15 am-6:10 am

1 stop36h 55m

$1,149

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/3

Sorted by cheapest first

Compare providers for flights from Seattle to Jeju City

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 Jeju City in May.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*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-Jeju City flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Jeju City flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Jeju City flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Jeju City 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-Jeju City 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 Jeju City

Have a flexible travel schedule? Discover the best time to fly to Jeju City 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.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Jeju City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Seattle to Jeju City that include hotel bookings?

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

  • How can I find direct flights from Seattle to Jeju City?

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

  • Can I find deals for business class flights from Seattle to Jeju City?

    Yes. Cheapflights offers flight deals from Seattle to Jeju City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Traveling to a place near Jeju City?

Book flights to Jeju City if you plan to visit one of these locations
Seogwipo

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