$531 Cheap Flights from Seattle (SEA) to Jeju (CJU)

View $531 flight on Sat, Jan 24, 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Jeju Intl. Airport (CJU)

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Cheap Flights from Seattle to Jeju (SEA-CJU)

Prices were available within the past 7 days and start at $531 for one-way flights and $921 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Asiana Airlines
Mon, Nov 10 - Mon, Nov 24
SEA
Seattle
CJU
Jeju City
$921 Roundtrip, found 6 days ago
$921
Roundtrip
found 6 days ago
Select Asiana Airlines flight, departing Mon, Nov 10 from Seattle to Jeju City, returning Mon, Nov 24, priced at $921 found 6 days ago
Asiana Airlines
Tue, Nov 11 - Tue, Nov 18
SEA
Seattle
CJU
Jeju City
$925 Roundtrip, found 4 days ago
$925
Roundtrip
found 4 days ago
Select Asiana Airlines flight, departing Tue, Nov 11 from Seattle to Jeju City, returning Tue, Nov 18, priced at $925 found 4 days ago
Asiana Airlines
Tue, Nov 11 - Sat, Nov 15
SEA
Seattle
CJU
Jeju City
$936 Roundtrip, found 4 days ago
$936
Roundtrip
found 4 days ago
Select Asiana Airlines flight, departing Tue, Nov 11 from Seattle to Jeju City, returning Sat, Nov 15, priced at $936 found 4 days ago
Asiana Airlines
Tue, Nov 11 - Mon, Nov 17
SEA
Seattle
CJU
Jeju City
$940 Roundtrip, found 4 days ago
$940
Roundtrip
found 4 days ago
Select Asiana Airlines flight, departing Tue, Nov 11 from Seattle to Jeju City, returning Mon, Nov 17, priced at $940 found 4 days ago
Asiana Airlines
Mon, Nov 10 - Sun, Nov 23
SEA
Seattle
CJU
Jeju City
$950 Roundtrip, found 6 days ago
$950
Roundtrip
found 6 days ago
Select Asiana Airlines flight, departing Mon, Nov 10 from Seattle to Jeju City, returning Sun, Nov 23, priced at $950 found 6 days ago
Asiana Airlines
Mon, Nov 17 - Thu, Nov 20
SEA
Seattle
CJU
Jeju City
$952 Roundtrip, found 17 hours ago
$952
Roundtrip
found 17 hours ago
Select Asiana Airlines flight, departing Mon, Nov 17 from Seattle to Jeju City, returning Thu, Nov 20, priced at $952 found 17 hours ago
Delta
Tue, Nov 11 - Sun, Nov 16
SEA
Seattle
CJU
Jeju City
$962 Roundtrip, found 4 days ago
$962
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Nov 11 from Seattle to Jeju City, returning Sun, Nov 16, priced at $962 found 4 days ago
Korean Air
Sat, Nov 15 - Wed, Dec 3
SEA
Seattle
CJU
Jeju City
$987 Roundtrip, found 6 days ago
$987
Roundtrip
found 6 days ago
Select Korean Air flight, departing Sat, Nov 15 from Seattle to Jeju City, returning Wed, Dec 3, priced at $987 found 6 days ago
Singapore Airlines
Sun, Aug 23 - Mon, Aug 31
SEA
Seattle
CJU
Jeju City
$1,197 Roundtrip, found 1 day ago
$1,197
Roundtrip
found 1 day ago
Select Singapore Airlines flight, departing Sun, Aug 23 from Seattle to Jeju City, returning Mon, Aug 31, priced at $1,197 found 1 day ago
Cathay Pacific
Tue, Apr 21 - Sat, Apr 25
SEA
Seattle
CJU
Jeju City
$1,327 Roundtrip, found 2 days ago
$1,327
Roundtrip
found 2 days ago
Select Cathay Pacific flight, departing Tue, Apr 21 from Seattle to Jeju City, returning Sat, Apr 25, priced at $1,327 found 2 days ago

Alternative airports near Jeju City

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Jeju Intl. CJU. Cheapest and Closest option available. Average driving time to city center is 4 minutes. Flights from $971
CJU
Jeju Intl.
CheapestClosest
Average driving time to city center4 min
Flights from $971

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Jeju Intl. Airport (CJU) cost?
Lock in a cheap one-way flight from $531 or cheap return flight from $921 from Seattle - Tacoma Intl. Airport (SEA) to Jeju Intl. Airport (CJU) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Jeju Intl. Airport (CJU)?
The cheapest month to fly from SEA to CJU is November, when demand is low. Off-peak months are typically when better flight deals are available between these airports.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Jeju Intl. Airport (CJU)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest SEA to CJU flight.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Jeju Intl. Airport (CJU)?
You'll have to take a flight with a layover if you're traveling from Seattle - Tacoma Intl. Airport (SEA) to Jeju Intl. Airport (CJU). There are no daily direct flights on this route. However, just filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from SEA to CJU?
Usually you'll find the greatest selection of flight options on a Friday. Tuesdays are often the quietest.* However, this can change based on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Jeju Intl. Airport (CJU)?
To avoid potential delays on the Seattle - Tacoma Intl. Airport (SEA) to Jeju Intl. Airport (CJU) route, aim to fly before 3 PM. Flights after this time are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Jeju Intl. Airport (CJU) last-minute?
Booking your plane ticket from SEA to CJU shortly before your journey is usually more expensive. But if you're flexible with your schedule, you could snag a cheap last-minute fare.
Is it cheaper to book a SEA to CJU flight and hotel package?
You'll generally save money by securing a SEA to CJU flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. After selecting your preferred accommodations and flights, consider adding extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Jeju Intl. Airport (CJU)?
Generally, it's possible to reschedule or cancel your SEA to CJU flight. However, if it's been more than 24 hours since booking, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Jeju Intl.
Airlines serving
Singapore Airlines
Roundtrip price
$920
Distance
5410 mi

Book with confidence

Seattle to Jeju Flights

The cheapest times to fly from Seattle to Jeju

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Jeju are during the month of November. You can find some of the cheapest flights from Seattle to Jeju with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Jeju

Sunday is one of the best days to book for cheap flights from Seattle to Jeju: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Jeju

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Jeju in 2025. You can also book with separate airlines for your outbound and return journeys, from $531 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Jeju flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Jeju airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Seattle to Jeju Flights

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*Available to One Key members.