Can I get a flight from Seoul to Jeju City on Korean Air for under HK$785?

Cheapflights users have found 3 Korean Air flights for under HK$785 on the SEL-CJU route. Prices on flights to Jeju City from Seoul can vary based on many factors including dates. To look at price based on your preferred dates, click here.

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

Booking with Korean Air 82 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seoul to Jeju City. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, the most affordable month to book a Korean Air flight from Seoul to Jeju City in January, with an average price of HK$659. Conversely, traveling with Korean Air from Seoul to Jeju City in May will be the most expensive, with an average cost of HK$1,020. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

HK$314+ Korean Air Flights from Seoul to Jeju City

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Cheapest Korean Air flights from Seoul to Jeju City
Explore the most affordable Korean Air flight options available from Seoul to Jeju City. Find the lowest fares with prices last updated on 6 October 2026.

Thu 26-1115:55 -

Nonstop1h 15m

Mon 30-1110:55 -

Nonstop1h 15m

Deal found 1-10HK$800

Thu 15-1019:05 -

Nonstop1h 15m

Thu 22-1007:05 -

Nonstop1h 15m

Deal found 1-10HK$847

Fri 16-1007:45 -

1 stop6h 25m

Mon 19-1013:00 -

1 stop8h 05m

Deal found 2-10HK$2,072

Can I get a flight from Seoul to Jeju City on Korean Air for under HK$785?
Cheapflights users have found 3 Korean Air flights for under HK$785 on the SEL-CJU route. Prices on flights to Jeju City from Seoul can vary based on many factors including dates. To look at price based on your preferred dates, click here.

Korean Air flights from Seoul to Jeju City in 2026

One-way from	HK$314
Return from	HK$738
Popular in	August
Cheapest in	January
Average price (all airlines)	HK$777

Korean Air
5-12-31-12
Nonstop
1h 15m total
Seoul to Jeju City

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Korean Air
1-2-6-2
Nonstop
2h 30m total
Seoul to Jeju City

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Highest demand for flights from Seoul to Jeju City; 11% potential price increase.

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Best time to find cheap flights from Seoul to Jeju City; 2% potential price drop.

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Average price for all Seoul to Jeju City flights (one-way and round-trip).

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SEL-CJU

GMP-CJU

Which month is the cheapest to fly Economy class from Seoul to Jeju City?

For Economy class flights, the cheapest month to fly this route is January. The most expensive months are May and April.

Weekly Korean Air flight availability from Seoul to Jeju City

The most Korean Air flights from SEL to CJU are scheduled on a Friday (31 on average). You will have fewer Korean Air flight options on Monday, which is when the least amount of flights are scheduled (30 on average).

When is the best time to book a flight to Jeju City with Korean Air?

The best time to book a flight to Jeju City with Korean Air is 82 days before departure. On average, fares are higher if you book 70 days before departure.

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.

SEL-CJU

GMP-CJU

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.

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Korean Air flights from Seoul to Jeju City (SEL - CJU)

Find Korean Air flight deals from Seoul to Jeju City

Cheapest Korean Air flights from Seoul to Jeju CityExplore the most affordable Korean Air flight options available from Seoul to Jeju City. Find the lowest fares with prices last updated on 6 October 2026.

Explore the most affordable Korean Air flight options available from Seoul to Jeju City. Find the lowest fares with prices last updated on 6 October 2026.

Best Korean Air flights from Seoul to Jeju CityDiscover carefully curated Korean Air flight deals from Seoul to Jeju City that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 6 October 2026.

Discover carefully curated Korean Air flight deals from Seoul to Jeju City that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 6 October 2026.

Direct Korean Air flights from Seoul to Jeju CityExplore direct Korean Air flight options from Seoul to Jeju City based on user searches, and compare prices and availability for your desired travel dates. Data last updated 6 October 2026.

Explore direct Korean Air flight options from Seoul to Jeju City based on user searches, and compare prices and availability for your desired travel dates. Data last updated 6 October 2026.

Last-minute Korean Air flights from Seoul to Jeju CityDiscover last-minute Korean Air flight deals from Seoul to Jeju City. Data last updated 6 October 2026 and is based on user searches.

Discover last-minute Korean Air flight deals from Seoul to Jeju City. Data last updated 6 October 2026 and is based on user searches.

One-way Korean Air flights to Jeju CitySearch for one-way Korean Air flight options to Jeju City. Find affordable one-way fares based on user searches. Data last updated 6 October 2026.

Search for one-way Korean Air flight options to Jeju City. Find affordable one-way fares based on user searches. Data last updated 6 October 2026.

Can I get a flight from Seoul to Jeju City on Korean Air for under HK$785?

Korean Air flights from Seoul to Jeju City in 2026

One-way from

Return from

Popular in

Cheapest in

Average price (all airlines)

Which month is the cheapest to fly Economy class from Seoul to Jeju City?

For Economy class flights, the cheapest month to fly this route is January. The most expensive months are May and April.

Weekly Korean Air flight availability from Seoul to Jeju City

The most Korean Air flights from SEL to CJU are scheduled on a Friday (31 on average). You will have fewer Korean Air flight options on Monday, which is when the least amount of flights are scheduled (30 on average).

When is the best time to book a flight to Jeju City with Korean Air?

The best time to book a flight to Jeju City with Korean Air is 82 days before departure. On average, fares are higher if you book 70 days before departure.

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.

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 another airline

Consider alternative airlines that service the Jeju City area. Flight routes are based on user searches made on Cheapflights and were last updated on 6 October 2026.

Complete your trip

Complete your trip to Jeju City by adding a car hire and/or hotel booking to your travel itinerary.

Other airlines serving Seoul and Jeju City

Choose from other airlines serving Seoul and Jeju City.

Other popular destinations in Asia

If Jeju City is not for you, choose from these other destinations located in Asia. Flight routes are based on user searches made on Cheapflights and were last updated on 6 October 2026.

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Cheapest Korean Air flights from Seoul to Jeju City
Explore the most affordable Korean Air flight options available from Seoul to Jeju City. Find the lowest fares with prices last updated on 6 October 2026.

Best Korean Air flights from Seoul to Jeju City
Discover carefully curated Korean Air flight deals from Seoul to Jeju City that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 6 October 2026.

Direct Korean Air flights from Seoul to Jeju City
Explore direct Korean Air flight options from Seoul to Jeju City based on user searches, and compare prices and availability for your desired travel dates. Data last updated 6 October 2026.

Last-minute Korean Air flights from Seoul to Jeju City
Discover last-minute Korean Air flight deals from Seoul to Jeju City. Data last updated 6 October 2026 and is based on user searches.

One-way Korean Air flights to Jeju City
Search for one-way Korean Air flight options to Jeju City. Find affordable one-way fares based on user searches. Data last updated 6 October 2026.