$949+ Cheap flights from Washington to Jeju-do
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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — CJU
Jan 17 — Jan 241
1 adult, Economy
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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
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Best flights from Washington to Jeju-doDiscover carefully curated flight deals from Washington to Jeju-do that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.
Discover carefully curated flight deals from Washington to Jeju-do that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.
This Justfly.com deal was found by Cheapflights users on 12/17. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/38:45 amSEA - CJU
1 stop41h 10mSingapore Airlines
Wed 3/118:55 amCJU - SEA
1 stop39h 15mSingapore Airlines
Deal found 12/17![Singapore Airlines logo]()
$949
This Kiwi.com deal was found by Cheapflights users on 12/17. 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.
Mon 3/212:10 amSEA - CJU
1 stop24h 15mMultiple Airlines
Wed 3/117:55 amCJU - SEA
2 stops27h 45mMultiple Airlines
Deal found 12/17![Multiple Airlines logo]()
$1,016
This KAYAK deal was found by Cheapflights users on 12/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1111:50 amSEA - CJU
1 stop26h 30mCathay Pacific
Sat 4/187:55 amCJU - SEA
1 stop18h 15mCathay Pacific
Deal found 12/17![Cathay Pacific logo]()
$1,070
This Ovago deal was found by Cheapflights users on 12/17. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/911:50 amSEA - CJU
1 stop26h 30mCathay Pacific
Sat 4/187:55 amCJU - SEA
1 stop18h 15mCathay Pacific
Deal found 12/17![Cathay Pacific logo]()
$1,088
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 4/101:15 amSEA - CJU
1 stop24h 15mMultiple Airlines
Wed 4/1510:30 amCJU - SEA
1 stop21h 40mMultiple Airlines
Deal found 12/17![Multiple Airlines logo]()
$1,135
This KAYAK deal was found by Cheapflights users on 12/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1111:50 amSEA - CJU
1 stop26h 30mCathay Pacific
Thu 4/167:55 amCJU - SEA
1 stop18h 15mCathay Pacific
Deal found 12/17![Cathay Pacific logo]()
$1,095
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 4/71:15 amSEA - CJU
1 stop24h 15mMultiple Airlines
Wed 4/1510:30 amCJU - SEA
1 stop21h 40mMultiple Airlines
Deal found 12/17![Multiple Airlines logo]()
$1,155
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 4/71:15 amSEA - CJU
1 stop24h 15mMultiple Airlines
Fri 4/1710:30 amCJU - SEA
1 stop21h 40mMultiple Airlines
Deal found 12/17![Multiple Airlines logo]()
$1,163
This KAYAK deal was found by Cheapflights users on 12/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/811:50 amSEA - CJU
1 stop26h 30mCathay Pacific
Sat 4/187:55 amCJU - SEA
1 stop18h 15mCathay Pacific
Deal found 12/17![Cathay Pacific logo]()
$1,173
This KAYAK deal was found by Cheapflights users on 12/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/811:50 amSEA - CJU
1 stop26h 30mCathay Pacific
Thu 4/167:55 amCJU - SEA
1 stop18h 15mCathay Pacific
Deal found 12/17![Cathay Pacific logo]()
$1,198
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 4/91:15 amSEA - CJU
1 stop24h 15mMultiple Airlines
Wed 4/1510:30 amCJU - SEA
1 stop21h 40mMultiple Airlines
Deal found 12/17![Multiple Airlines logo]()
$1,225
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 4/101:15 amSEA - CJU
1 stop24h 15mMultiple Airlines
Sun 4/1910:40 amCJU - SEA
1 stop21h 30mMultiple Airlines
Deal found 12/17![Multiple Airlines logo]()
$1,229
Find flight deals from Washington to Jeju-do
Keep the following information in mind while searching for Washington to Jeju-do flight deals. Data was last updated December 18, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $949 (Justfly.com) |
Cheapflights Fare Finder
Customize your flight search to find flights from Washington to Jeju-do 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 December 18, 2025.
Use the filters below to find and compare flights from Washington to Jeju-do that are best for you.
Fly from
Washington
Fly to
Jeju-do
Route
Depart
Return
Price
SeattleJeju City
SEA - CJU
SEACJU
Seattle/Tacoma Intl
Tue 3/3
8:45 am-6:55 pm
1 stop41h 10m
Jeju City
Wed 3/11
8:55 am-8:10 am
1 stop39h 15m
$949
SeattleJeju City
SEA - CJU
SEACJU
Seattle/Tacoma Intl
Mon 3/2
12:10 am-5:25 pm
1 stop24h 15m
Jeju City
Wed 3/11
7:55 am-7:40 pm
2 stops27h 45m
$1,016
SeattleJeju City
SEA - CJU
SEACJU
Seattle/Tacoma Intl
Sat 4/11
11:50 am-6:20 am
1 stop26h 30m
Jeju City
Sat 4/18
7:55 am-10:10 am
1 stop18h 15m
$1,070
SeattleJeju City
SEA - CJU
SEACJU
Seattle/Tacoma Intl
Thu 4/9
11:50 am-6:20 am
1 stop26h 30m
Jeju City
Sat 4/18
7:55 am-10:10 am
1 stop18h 15m
$1,088
SeattleJeju City
SEA - CJU
SEACJU
Seattle/Tacoma Intl
Sat 4/11
11:50 am-6:20 am
1 stop26h 30m
Jeju City
Thu 4/16
7:55 am-10:10 am
1 stop18h 15m
$1,095
SeattleJeju City
SEA - CJU
SEACJU
Seattle/Tacoma Intl
Fri 4/10
1:15 am-5:30 pm
1 stop24h 15m
Jeju City
Wed 4/15
10:30 am-4:10 pm
1 stop21h 40m
$1,135
SeattleJeju City
SEA - CJU
SEACJU
Seattle/Tacoma Intl
Tue 4/7
1:15 am-5:30 pm
1 stop24h 15m
Jeju City
Wed 4/15
10:30 am-4:10 pm
1 stop21h 40m
$1,155
SeattleJeju City
SEA - CJU
SEACJU
Seattle/Tacoma Intl
Tue 4/7
1:15 am-5:30 pm
1 stop24h 15m
Jeju City
Fri 4/17
10:30 am-4:10 pm
1 stop21h 40m
$1,163
SeattleJeju City
SEA - CJU
SEACJU
Seattle/Tacoma Intl
Wed 4/8
11:50 am-6:20 am
1 stop26h 30m
Jeju City
Sat 4/18
7:55 am-10:10 am
1 stop18h 15m
$1,173
SeattleJeju City
SEA - CJU
SEACJU
Seattle/Tacoma Intl
Wed 4/8
11:50 am-6:20 am
1 stop26h 30m
Jeju City
Thu 4/16
7:55 am-10:10 am
1 stop18h 15m
$1,198
Showing 1-10 of 12 results
Best time to book a flight from Washington to Jeju-do
Have a flexible travel schedule? Discover the best time to fly to Jeju-do from Washington 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 Washington to Jeju-do
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