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Cheap flights from Seattle to Jeju City from $621

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Jeju City departing on 6/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Seattle to Jeju City

Cheap round-trip flights

Enter your travel dates to find the best prices.
Cathay Pacific Logo
12:25 pm - 6:30 am
SEA
-
CJU
26h 05m
1 stop
Cathay Pacific Logo
7:30 am - 10:05 am
CJU
-
SEA
18h 35m
1 stop
$834Cathay Pacific
Mon, Aug 31 - Thu, Sep 17
Cathay Pacific Logo
12:25 pm - 6:30 am
SEA
-
CJU
26h 05m
1 stop
Cathay Pacific Logo
7:30 am - 10:20 am
CJU
-
SEA
18h 50m
1 stop
$902Cathay Pacific
Mon, Aug 31 - Mon, Sep 14
Cathay Pacific Logo
12:25 pm - 6:30 am
SEA
-
CJU
26h 05m
1 stop
Cathay Pacific Logo
7:30 am - 10:05 am
CJU
-
SEA
18h 35m
1 stop
$909Cathay Pacific
Mon, Aug 31 - Wed, Sep 16
Multiple Airlines Logo
12:25 pm - 6:30 am
SEA
-
CJU
26h 05m
1 stop
Multiple Airlines Logo
7:30 am - 8:05 pm
CJU
-
SEA
28h 35m
2 stops
$959Multiple Airlines
Wed, Sep 2 - Thu, Sep 17
Multiple Airlines Logo
12:25 pm - 6:30 am
SEA
-
CJU
26h 05m
1 stop
Multiple Airlines Logo
7:30 am - 8:05 pm
CJU
-
SEA
28h 35m
2 stops
$982Multiple Airlines
Thu, Sep 3 - Wed, Sep 16
Multiple Airlines Logo
12:25 pm - 6:30 am
SEA
-
CJU
26h 05m
1 stop
Multiple Airlines Logo
7:30 am - 10:20 am
CJU
-
SEA
18h 50m
1 stop
$1,058Multiple Airlines
Wed, Sep 2 - Mon, Sep 14
Multiple Airlines Logo
1:15 am - 9:25 am
SEA
-
CJU
16h 10m
1 stop
Multiple Airlines Logo
10:30 am - 8:05 pm
CJU
-
SEA
25h 35m
2 stops
$1,065Multiple Airlines
Sat, Aug 29 - Tue, Sep 15
Multiple Airlines Logo
12:25 pm - 6:30 am
SEA
-
CJU
26h 05m
1 stop
Multiple Airlines Logo
7:30 am - 7:15 pm
CJU
-
SEA
27h 45m
2 stops
$1,067Multiple Airlines
Thu, Sep 3 - Sat, Sep 19
Cathay Pacific Logo
12:25 pm - 6:30 am
SEA
-
CJU
26h 05m
1 stop
Cathay Pacific Logo
7:30 am - 10:05 am
CJU
-
SEA
18h 35m
1 stop
$1,089Cathay Pacific
Thu, Sep 3 - Sat, Sep 19
Cathay Pacific Logo
12:25 pm - 6:30 am
SEA
-
CJU
26h 05m
1 stop
Cathay Pacific Logo
7:30 am - 10:20 am
CJU
-
SEA
18h 50m
1 stop
$1,107Cathay Pacific
Tue, Aug 18 - Wed, Aug 26

Singapore Airlines flights from Seattle to Jeju City

Our best Singapore Airlines deals on Seattle to Jeju City flight tickets
Singapore Airlines
Aug 18
SEA10:15 amSeattle/Tacoma Intl
53h 10m
1 stop
CJU7:25 amJeju City
Aug 26
CJU9:30 amJeju City
63h 15m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$1,204
Singapore Airlines
Aug 29
SEA10:15 amSeattle/Tacoma Intl
29h 10m
1 stop
CJU7:25 amJeju City
Sep 16
CJU9:30 amJeju City
39h 15m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$1,236
Singapore Airlines
Aug 18
SEA10:15 amSeattle/Tacoma Intl
53h 10m
1 stop
CJU7:25 amJeju City
Aug 26
CJU9:30 amJeju City
39h 15m
1 stop
SEA8:45 amSeattle/Tacoma Intl
$1,248

China Eastern flights from Seattle to Jeju City

Our best China Eastern deals on Seattle to Jeju City flight tickets
China Eastern
Apr 19
SEA7:35 amSeattle/Tacoma Intl
36h 55m
2 stops
CJU12:30 pmJeju City
Apr 23
CJU7:10 pmJeju City
39h 16m
2 stops
SEA6:26 pmSeattle/Tacoma Intl
$1,268
China Eastern
Apr 19
SEA7:35 amSeattle/Tacoma Intl
36h 55m
2 stops
CJU12:30 pmJeju City
Apr 23
CJU7:10 pmJeju City
39h 16m
2 stops
SEA6:26 pmSeattle/Tacoma Intl
$1,468
China Eastern
Apr 19
SEA7:35 amSeattle/Tacoma Intl
36h 55m
2 stops
CJU12:30 pmJeju City
Apr 23
CJU7:10 pmJeju City
39h 16m
2 stops
SEA6:26 pmSeattle/Tacoma Intl
$1,613

momondo 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, momondo users made 832,500 searches. Data last updated March 12, 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

Mon 8/31

12:25 pm-6:30 am

1 stop26h 05m

Jeju City

Thu 9/17

7:30 am-10:05 am

1 stop18h 35m

$834

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Mon 8/31

12:25 pm-6:30 am

1 stop26h 05m

Jeju City

Mon 9/14

7:30 am-10:20 am

1 stop18h 50m

$902

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Mon 8/31

12:25 pm-6:30 am

1 stop26h 05m

Jeju City

Wed 9/16

7:30 am-10:05 am

1 stop18h 35m

$909

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Wed 9/2

12:25 pm-6:30 am

1 stop26h 05m

Jeju City

Thu 9/17

7:30 am-8:05 pm

2 stops28h 35m

$959

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Thu 9/3

12:25 pm-6:30 am

1 stop26h 05m

Jeju City

Wed 9/16

7:30 am-8:05 pm

2 stops28h 35m

$982

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Wed 9/2

12:25 pm-6:30 am

1 stop26h 05m

Jeju City

Mon 9/14

7:30 am-10:20 am

1 stop18h 50m

$1,058
Quickest round-trip

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Sat 8/29

1:15 am-9:25 am

1 stop16h 10m

Jeju City

Tue 9/15

10:30 am-8:05 pm

2 stops25h 35m

$1,065

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Thu 9/3

12:25 pm-6:30 am

1 stop26h 05m

Jeju City

Sat 9/19

7:30 am-7:15 pm

2 stops27h 45m

$1,067

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Thu 9/3

12:25 pm-6:30 am

1 stop26h 05m

Jeju City

Sat 9/19

7:30 am-10:05 am

1 stop18h 35m

$1,089

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

$1,107

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

When to book flights from Seattle to Jeju City

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Jeju City according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Jeju City (SEA to CJU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Jeju City

Fastest flight time

15h 50m

Direct flights

None
The fastest flight from Seattle to Jeju City takes 15h 50m
There are no direct flights from Seattle to Jeju City. There are no popular flight routes from Seattle to Jeju City.
Search flight deals

  • How far is Seattle/Tacoma Intl to Jeju City by plane?

    There are 5397.0 mi between Seattle/Tacoma Intl and Jeju City. Typically, this will take 15h 50m by plane in normal conditions.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Jeju City Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Jeju City Airport refresh daily.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Jeju City Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Jeju City Airport.

  • What documentation or ID do you need to fly to Jeju City Airport?

    The necessary travel and health documents for your Jeju City Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • How do I get Price Alerts for flights from Seattle to Jeju City?

    Confirm your travel details to search for the latest offers for flights from Seattle to Jeju City. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Seattle to Jeju City with momondo?

    With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Traveling to a place near Jeju City?

Book flights to Jeju City if you plan to visit one of these locations
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Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Jeju City?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Jeju City from Seattle.

Can I find flights from Seattle to Jeju City with flexible booking policies on momondo?

momondo does allow users to show only those flights to Jeju City from Seattle which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Seattle to Jeju City?

Once all potential Seattle to Jeju City flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Seattle to Jeju City right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Jeju City, momondo offers a useful price alert feature which will track prices for flights to Jeju City from Seattle and alert you when they change.

An easier way to manage your Jeju City trip

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Cabin classes currently available on flights to Jeju City

List of cabin classes available on flights landing in Jeju City. Availability may vary depending on flight origin and airline.
First Class to Jeju City
Business Class to Jeju City