$573+ Cheap flights from Seattle (SEA) to Jeju City (CJU)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CJU
Oct 17 — Oct 241
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Jeju City with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Jeju City
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to Jeju CityExplore 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 September 17, 2026.
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 September 17, 2026.
This Trip.com deal was found by Cheapflights users on 9/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2911:25 am -
1 stop27h 15m
Thu 11/57:45 am -
1 stop18h 00m
Deal found 9/14![Cathay Pacific logo]()
$1,038
This oojo deal was found by Cheapflights users on 9/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/296:39 am -
2 stops38h 11m
Thu 11/51:50 pm -
2 stops42h 14m
Deal found 9/14![Multiple Airlines logo]()
$1,092
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2111:29 am -
2 stops39h 36m
Fri 11/2711:45 am -
1 stop20h 20m
Deal found 9/15![Multiple Airlines logo]()
$1,211
This Korean Air deal was found by Cheapflights users on 9/15. 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.
Fri 11/2012:10 am -
1 stop16h 55m
Fri 11/2710:35 am -
1 stop15h 30m
Deal found 9/15![Korean Air logo]()
$1,387
This Mytrip deal was found by Cheapflights users on 9/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1610:10 am -
3 stops34h 30m
Fri 1/16:45 am -
3 stops32h 12m
Deal found 9/12![Multiple Airlines logo]()
$2,490
Best flights from Seattle to Jeju CityDiscover carefully curated flight deals from Seattle to Jeju City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.
Discover carefully curated flight deals from Seattle to Jeju City that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.
This Mytrip deal was found by Cheapflights users on 9/14. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/281:10 am -
2 stops28h 45m
Thu 11/510:50 am -
1 stop23h 40m
Deal found 9/14![Multiple Airlines logo]()
$1,248
This Korean Air deal was found by Cheapflights users on 9/15. 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.
Fri 11/2012:10 am -
1 stop16h 55m
Fri 11/2710:35 am -
1 stop15h 30m
Deal found 9/15![Korean Air logo]()
$1,387
This Singapore Airlines deal was found by Cheapflights users on 9/16. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/178:40 am -
1 stop29h 40m
Thu 1/218:55 am -
1 stop39h 10m
Deal found 9/16![Singapore Airlines logo]()
$1,508
This oojo deal was found by Cheapflights users on 9/15. 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 11/218:04 pm -
2 stops52h 51m
Fri 11/273:40 pm -
2 stops40h 46m
Deal found 9/15![Multiple Airlines logo]()
$1,458
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 12/1610:25 am -
2 stops31h 45m
Fri 1/14:20 pm -
1 stop14h 35m
Deal found 9/12![Multiple Airlines logo]()
$2,547
Last-minute flights from Seattle to Jeju CityDiscover last-minute flight deals from Seattle to Jeju City. Data last updated September 17, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Jeju City. Data last updated September 17, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 9/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2911:25 am -
1 stop27h 15m
Thu 11/57:45 am -
1 stop18h 00m
Deal found 9/14![Cathay Pacific logo]()
$1,038
This oojo deal was found by Cheapflights users on 9/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/296:39 am -
2 stops38h 11m
Thu 11/51:50 pm -
2 stops42h 14m
Deal found 9/14![Multiple Airlines logo]()
$1,092
One-way flights from Seattle to Jeju CitySearch for one-way flight options from Seattle to Jeju City. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.
Search for one-way flight options from Seattle to Jeju City. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1611:10 pm -
2 stops31h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Multiple Airlines logo]()
$573
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1510:30 am -
3 stops40h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Multiple Airlines logo]()
$594
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 September 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $1,038 (Trip.com) |
One-way from | $573 (Kiwi.com) |
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 7,457,451 searches. Data last updated September 17, 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
Cheapest round-trip
Quickest round-trip
SeattleJeju City
SEA Seattle/Tacoma Intl - CJU Jeju City
SEACJU
Seattle/Tacoma Intl
Fri 10/16
11:10 pm-10:30 pm
2 stops31h 20m
Jeju City
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$573
SeattleJeju City
SEA Seattle/Tacoma Intl - CJU Jeju City
SEACJU
Seattle/Tacoma Intl
Thu 10/15
7:55 pm-7:25 pm
2 stops31h 30m
Jeju City
Wed 12/31
12:00 am-7:00 am
Nonstop0h 00m
$611
SeattleJeju City
SEA Seattle/Tacoma Intl - CJU Jeju City
SEACJU
Seattle/Tacoma Intl
Wed 10/28
1:10 am-9:55 pm
2 stops28h 45m
Jeju City
Thu 11/5
10:50 am-5:30 pm
1 stop23h 40m
$1,248
SeattleJeju City
SEA Seattle/Tacoma Intl - CJU Jeju City
SEACJU
Seattle/Tacoma Intl
Fri 11/20
12:10 am-10:05 am
1 stop16h 55m
Jeju City
Fri 11/27
10:35 am-9:05 am
1 stop15h 30m
$1,387
SeattleJeju City
SEA Seattle/Tacoma Intl - CJU Jeju City
SEACJU
Seattle/Tacoma Intl
Sat 11/21
8:04 pm-5:55 pm
2 stops52h 51m
Jeju City
Fri 11/27
3:40 pm-3:26 pm
2 stops40h 46m
$1,458
SeattleJeju City
SEA Seattle/Tacoma Intl - CJU Jeju City
SEACJU
Seattle/Tacoma Intl
Sun 1/17
8:40 am-7:20 am
1 stop29h 40m
Jeju City
Thu 1/21
8:55 am-7:05 am
1 stop39h 10m
$1,508
SeattleJeju City
SEA Seattle/Tacoma Intl - CJU Jeju City
SEACJU
Seattle/Tacoma Intl
Wed 12/16
10:25 am-11:10 am
2 stops31h 45m
Jeju City
Fri 1/1
4:20 pm-1:55 pm
1 stop14h 35m
$2,547
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- 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.
SEA-CJU
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.
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