Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Seoul to Jeju City from $20

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 5/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — CJU
16 Jan — 23 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seoul to Jeju City

Enter your travel dates to find the best prices.

Cheapest flights from Seoul to Jeju City
Explore the most affordable flight options available from Seoul to Jeju City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 December 2025.

Mon 15/1220:10GMP - CJU
Nonstop1h 15mJin Air
Thu 18/1207:00CJU - GMP
Nonstop1h 15mJin Air
Deal found 14/12$35
Mon 15/1219:30GMP - CJU
Nonstop1h 15mJeju Air
Tue 16/1207:25CJU - GMP
Nonstop1h 20mJeju Air
Deal found 14/12$36
Wed 17/1218:50GMP - CJU
Nonstop1h 15mJin Air
Thu 18/1207:00CJU - GMP
Nonstop1h 15mJin Air
Deal found 16/12$38
Mon 22/1219:30GMP - CJU
Nonstop1h 15mJeju Air
Fri 26/1207:10CJU - GMP
Nonstop1h 15mJeju Air
Deal found 15/12$39
Tue 16/1220:10GMP - CJU
Nonstop1h 15mJin Air
Mon 22/1207:00CJU - GMP
Nonstop1h 15mJin Air
Deal found 16/12$41
Tue 16/1219:30GMP - CJU
Nonstop1h 15mJeju Air
Sun 21/1207:10CJU - GMP
Nonstop1h 15mJeju Air
Deal found 16/12$44
Tue 16/1220:25GMP - CJU
Nonstop1h 15mAsiana Airlines
Thu 18/1208:55CJU - GMP
Nonstop1h 15mAsiana Airlines
Deal found 15/12$45
Wed 17/1218:35GMP - CJU
Nonstop1h 15mAsiana Airlines
Sat 20/1206:05CJU - GMP
Nonstop1h 15mAsiana Airlines
Deal found 16/12$47
Wed 17/1219:05GMP - CJU
Nonstop1h 15mJeju Air
Sun 21/1207:10CJU - GMP
Nonstop1h 15mJeju Air
Deal found 16/12$48
Mon 22/1220:30GMP - CJU
Nonstop1h 15mAsiana Airlines
Thu 25/1207:10CJU - GMP
Nonstop1h 15mAsiana Airlines
Deal found 16/12$50
Mon 22/1218:20GMP - CJU
Nonstop1h 15mJeju Air
Mon 22/1221:20CJU - GMP
Nonstop1h 15mJeju Air
Deal found 14/12$53
Thu 18/1218:50GMP - CJU
Nonstop1h 15mJin Air
Tue 23/1207:00CJU - GMP
Nonstop1h 15mJin Air
Deal found 16/12$54

Find flight deals from Seoul to Jeju City

Discover tips and strategies to find the most affordable flight options for your journey from Seoul (SEL) 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 17 December 2025.

Round-trip from

$42

One-way from

$20

Popular in

October

Cheapest in

November

Average price

$92

Good round-trip deal

$69 or less
Jeju Air
  • Jeju Air
  • 5/1-7/1
  • Nonstop
  • 2h 30m total
  • Seoul to Jeju City
Search Deals
Jeju Air
  • Jeju Air
  • 5/1
  • Nonstop
  • 1h 15m total
  • Seoul to Jeju City
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Seoul (SEL) to Jeju City.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Seoul 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 647,157 searches. Data last updated 17 December 2025.
Use the filters below to find and compare flights from Seoul to Jeju City that are best for you.

Fly from

Seoul

Fly to

Jeju City

Route

Depart

Return

Price

SeoulJeju City

GMP - CJU

GMPCJU

Seoul Gimpo Intl

Sat 3/1

19:55-21:10

Nonstop1h 15m

Jeju City

Thu 8/1

07:50-09:05

Nonstop1h 15m

$45

SeoulJeju City

GMP - CJU

GMPCJU

Seoul Gimpo Intl

Tue 13/1

16:00-17:15

Nonstop1h 15m

Jeju City

Fri 16/1

10:55-12:15

Nonstop1h 20m

$47

SeoulJeju City

GMP - CJU

GMPCJU

Seoul Gimpo Intl

Mon 19/1

19:05-20:20

Nonstop1h 15m

Jeju City

Wed 21/1

07:55-09:10

Nonstop1h 15m

$48

SeoulJeju City

GMP - CJU

GMPCJU

Seoul Gimpo Intl

Mon 19/1

19:50-21:05

Nonstop1h 15m

Jeju City

Wed 21/1

07:15-08:30

Nonstop1h 15m

$51

SeoulJeju City

GMP - CJU

GMPCJU

Seoul Gimpo Intl

Sun 4/1

20:25-21:40

Nonstop1h 15m

Jeju City

Thu 8/1

06:45-08:00

Nonstop1h 15m

$53

SeoulJeju City

GMP - CJU

GMPCJU

Seoul Gimpo Intl

Sun 18/1

18:35-19:50

Nonstop1h 15m

Jeju City

Wed 21/1

07:55-09:10

Nonstop1h 15m

$56

SeoulJeju City

GMP - CJU

GMPCJU

Seoul Gimpo Intl

Sat 3/1

20:20-21:35

Nonstop1h 15m

Jeju City

Tue 6/1

06:15-07:30

Nonstop1h 15m

$56

SeoulJeju City

GMP - CJU

GMPCJU

Seoul Gimpo Intl

Sat 24/1

19:30-20:45

Nonstop1h 15m

Jeju City

Wed 28/1

11:05-12:20

Nonstop1h 15m

$56

SeoulJeju City

GMP - CJU

GMPCJU

Seoul Gimpo Intl

Fri 26/12

06:25-07:40

Nonstop1h 15m

Jeju City

Fri 26/12

11:05-12:20

Nonstop1h 15m

$57

SeoulJeju City

GMP - CJU

GMPCJU

Seoul Gimpo Intl

Sat 3/1

18:40-19:55

Nonstop1h 15m

Jeju City

Wed 7/1

06:05-07:20

Nonstop1h 15m

$57

Flights are sorted by cheapest return flights first.

Deals found on 14/12

Showing 1-10 of 35 results
1
2
3
4

Best time to book a flight from Seoul to Jeju City

Have a flexible travel schedule? Discover the best time to fly to Jeju City from Seoul with our price prediction graph.
Estimated return 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 Seoul to Jeju City

How far ahead should I book a flight from Seoul to Jeju City?

Use this chart to determine the optimal time to book a return flight from Seoul to Jeju City. Price data was last updated on 12 December 2025.

The price you pay for your flight from Seoul to Jeju City may vary depending on when you book. For the best chance of a lower fare, look to book 9 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Seoul to Jeju City?

Currently, December is the cheapest month in which you can book a flight from Seoul to Jeju City (average of $33). Flying from Seoul to Jeju City in October is currently the most expensive (average of $65). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEL to CJU?

Find hourly flight availability from Seoul to Jeju City. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 December 2025.

It’s typically best to fly out from Seoul to Jeju City in the evening. Doing so could potentially save you 56% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Seoul to Jeju City?

Use this chart to determine the cheapest time to fly return from Seoul to Jeju City. Price data was last updated on 13 December 2025.

Travellers seeking maximum savings on their Seoul to Jeju City flight should consider departing on Thursday afternoons when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Seoul to Jeju City

Explore weekly flight availability from Seoul to Jeju City. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 17 December 2025.

The most flights from SEL to CJU are scheduled on a Tuesday (137 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (114 on average).

How much does it cost for a return flight from Seoul to Jeju City?

How often are flights from Seoul to Jeju City delayed?

About 17% of weekly flights between Seoul and Jeju City have experienced delays in the past year, with the average delay time being 83 minutes.

What is the most punctual flight time for Seoul to Jeju City flights?

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Sunday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Seoul to Jeju City flights?

Over the past year, Air Busan have had the lowest number of delays on this route, with just 11% of flights being delayed.

Reviews of airlines servicing Jeju City

Get insights into the airlines that provide service to Jeju City. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Jeju City. Reviews last updated 17 December 2025.
Read through reviews of airlines operating flights from Seoul to Jeju City, such as Korean Air, Asiana Airlines, andJeju Air. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very Good
1,186 reviews
Check prices

Overall

8.4

Crew

8.7

Entertainment

8.2

Food

8.1

Boarding

8.5

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Korean Air
8.4
Very Good
1,186 reviews
Korean Air
8.4
Very Good
1,186 reviews
Check prices

Overall

8.4

Crew

8.7

Entertainment

8.2

Food

8.1

Boarding

8.5

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Asiana Airlines
8.2
Very Good
493 reviews
Korean Air
8.4
Very Good
1,186 reviews
Check prices

Overall

8.4

Crew

8.7

Entertainment

8.2

Food

8.1

Boarding

8.5

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Jeju Air
7.6
Good
36 reviews
Korean Air
8.4
Very Good
1,186 reviews
Check prices

Overall

8.4

Crew

8.7

Entertainment

8.2

Food

8.1

Boarding

8.5

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Related info for your journey

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

  • What airport do you fly into for flights to Jeju City from Seoul?

    Jeju City (CJU) is the airport you will fly into if you book a flight from Seoul to Jeju City. You should not have trouble finding flights to Jeju from Seoul; the airport handles an average of 123 inbound flights from Seoul per day. You should also have plenty of airline options to choose from since 3 airlines have flights to the Jeju City airport from Seoul. It is only a 2.7 km journey from Jeju (CJU) to Jeju City’s city centre.

  • How long is the flight from Seoul to Jeju City?

    Airlines like Eastar Jet, Jeju Air, and T'way Air fly from Seoul to Jeju City in about 1h 15m. The time it takes to get you to your destination is usually consistent. There are 451 km between Seoul and Jeju City. Most flights are nonstop.

  • What are the cheapest airlines flying from Seoul to Jeju City round-trip?

    Our cheapest airline available from Seoul to Jeju City is Jeju Air. Our recent data shows that you can find tickets from as low as $21 on this airline. Additional options worth looking into are Asiana Airlines and Korean Air, starting at $22 and $50 round-trip. Jeju Air is 81% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seoul 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.

  • What is the cheapest month to book a flight from Seoul to Jeju City?

    Currently, December is the cheapest month in which you can book a flight from Seoul to Jeju City (average of $33). Flying from Seoul to Jeju City in October is currently the most expensive (average of $65). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Jeju City?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from Seoul to Jeju City on these airlines

Choose from the following airlines for your flight from Seoul to Jeju City. Flights are based on user searches made on Cheapflights and were last updated on 17 December 2025.
Asiana Airlines flights from Seoul to Jeju City

Top 3 airlines flying from Seoul to Jeju City

Discover the top 3 airlines that operate flights from Seoul to Jeju City. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 17 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Jeju AirCheapest$30Average$96FlexibilityNo cancel feeOn-timeN/A
Search Jeju Air flights
Asiana AirlinesCheapest$84Average$88FlexibilityNo cancel feeOn-time76%
Search Asiana Airlines flights
Korean AirCheapest$86Average$197FlexibilityNo cancel feeOn-time81%
Search Korean Air flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seoul to Jeju City?

Deals for Seoul to Jeju City flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Seoul to Jeju City?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Seoul to Jeju City for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Seoul to Jeju City with no change fees?

Yes, we can. To see specific flights from Seoul to Jeju City with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Seoul to Jeju City become cheaper?

Of course! You can now track prices for flights from Seoul to Jeju City and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.