Can I get a flight from Seoul to Jeju City on Trinity Airways (Formerly T'way Air) for under Rp 1,787,630?

4 Trinity Airways (Formerly T'way Air) flights from SEL to CJU have recently been found on Cheapflights for under Rp 1,787,630. Click here to find the best deals to Jeju City for your desired dates.

How far ahead should I book a flight from Seoul to Jeju City with Trinity Airways (Formerly T'way Air)?

Booking with Trinity Airways (Formerly T'way Air) 27 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 Trinity Airways (Formerly T'way Air)?

Currently, the most affordable month to book a Trinity Airways (Formerly T'way Air) flight from Seoul to Jeju City in November, with an average price of Rp 911,691. Conversely, traveling with Trinity Airways (Formerly T'way Air) from Seoul to Jeju City in October will be the most expensive, with an average cost of Rp 1,787,630. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

Rp 607,794+ Trinity Airways (Formerly T'way Air) Flights from Seoul to Jeju City

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Cheapest Trinity Airways (Formerly T'way Air) flights from Seoul to Jeju City
Explore the most affordable Trinity Airways (Formerly T'way Air) flight options available from Seoul to Jeju City. Find the lowest fares with prices last updated on 11 October 2026.

Mon 12/1018.00 -

Nonstop1h 15m

Wed 14/1011.30 -

Nonstop1h 15m

Deal found 9/10Rp 911,691

Tue 20/1019.25 -

Nonstop1h 15m

Sat 24/1010.00 -

Nonstop1h 15m

Deal found 7/10Rp 1,358,598

Sun 1/1118.30 -

Nonstop1h 15m

Thu 5/1107.55 -

Nonstop1h 15m

Deal found 8/10Rp 1,447,980

Can I get a flight from Seoul to Jeju City on Trinity Airways (Formerly T'way Air) for under Rp 1,787,630?
4 Trinity Airways (Formerly T'way Air) flights from SEL to CJU have recently been found on Cheapflights for under Rp 1,787,630. Click here to find the best deals to Jeju City for your desired dates.

Trinity Airways (Formerly T'way Air) flights from Seoul to Jeju City in 2026

One-way from	Rp 607,794
Return from	Rp 1,447,980
Popular in	August
Cheapest in	January
Average price (all airlines)	Rp 1,787,630

Trinity Airways (Formerly T'way Air)
1/11-31/12
Nonstop
1h 15m total
Seoul to Jeju City

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Trinity Airways (Formerly T'way Air)
1/11-5/11
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 November. The most expensive months are October and August.

Weekly Trinity Airways (Formerly T'way Air) flight availability from Seoul to Jeju City

The most Trinity Airways (Formerly T'way Air) flights from SEL to CJU are scheduled on a Tuesday (16 on average). You will have fewer Trinity Airways (Formerly T'way Air) flight options on Monday, which is when the least amount of flights are scheduled (14 on average).

When is the best time to book a flight to Jeju City with Trinity Airways (Formerly T'way Air)?

The best time to book a flight to Jeju City with Trinity Airways (Formerly T'way Air) is 27 days before departure. On average, fares are higher if you book 82 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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Find Trinity Airways (Formerly T'way Air) flight deals from Seoul to Jeju City

Cheapest Trinity Airways (Formerly T'way Air) flights from Seoul to Jeju City
Explore the most affordable Trinity Airways (Formerly T'way Air) flight options available from Seoul to Jeju City. Find the lowest fares with prices last updated on 11 October 2026.

Explore the most affordable Trinity Airways (Formerly T'way Air) flight options available from Seoul to Jeju City. Find the lowest fares with prices last updated on 11 October 2026.

Discover carefully curated Trinity Airways (Formerly T'way 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 11 October 2026.

Direct Trinity Airways (Formerly T'way Air) flights from Seoul to Jeju City
Explore direct Trinity Airways (Formerly T'way 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 11 October 2026.

Explore direct Trinity Airways (Formerly T'way 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 11 October 2026.

Last-minute Trinity Airways (Formerly T'way Air) flights from Seoul to Jeju City
Discover last-minute Trinity Airways (Formerly T'way Air) flight deals from Seoul to Jeju City. Data last updated 11 October 2026 and is based on user searches.

Discover last-minute Trinity Airways (Formerly T'way Air) flight deals from Seoul to Jeju City. Data last updated 11 October 2026 and is based on user searches.

One-way Trinity Airways (Formerly T'way Air) flights to Jeju City
Search for one-way Trinity Airways (Formerly T'way Air) flight options to Jeju City. Find affordable one-way fares based on user searches. Data last updated 11 October 2026.

Search for one-way Trinity Airways (Formerly T'way Air) flight options to Jeju City. Find affordable one-way fares based on user searches. Data last updated 11 October 2026.

Can I get a flight from Seoul to Jeju City on Trinity Airways (Formerly T'way Air) for under Rp 1,787,630?

Trinity Airways (Formerly T'way 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 November. The most expensive months are October and August.

Weekly Trinity Airways (Formerly T'way Air) flight availability from Seoul to Jeju City

The most Trinity Airways (Formerly T'way Air) flights from SEL to CJU are scheduled on a Tuesday (16 on average). You will have fewer Trinity Airways (Formerly T'way Air) flight options on Monday, which is when the least amount of flights are scheduled (14 on average).

When is the best time to book a flight to Jeju City with Trinity Airways (Formerly T'way Air)?

The best time to book a flight to Jeju City with Trinity Airways (Formerly T'way Air) is 27 days before departure. On average, fares are higher if you book 82 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.

Complete your trip

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

Other airlines servicing 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 11 October 2026.

See what others are saying about Trinity Airways (Formerly T'way Air)

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Trinity Airways (Formerly T'way Air) flights from Seoul to Jeju City (SEL - CJU)

Find Trinity Airways (Formerly T'way Air) flight deals from Seoul to Jeju City

Cheapest Trinity Airways (Formerly T'way Air) flights from Seoul to Jeju CityExplore the most affordable Trinity Airways (Formerly T'way Air) flight options available from Seoul to Jeju City. Find the lowest fares with prices last updated on 11 October 2026.

Explore the most affordable Trinity Airways (Formerly T'way Air) flight options available from Seoul to Jeju City. Find the lowest fares with prices last updated on 11 October 2026.

Discover carefully curated Trinity Airways (Formerly T'way 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 11 October 2026.

Direct Trinity Airways (Formerly T'way Air) flights from Seoul to Jeju CityExplore direct Trinity Airways (Formerly T'way 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 11 October 2026.

Explore direct Trinity Airways (Formerly T'way 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 11 October 2026.

Last-minute Trinity Airways (Formerly T'way Air) flights from Seoul to Jeju CityDiscover last-minute Trinity Airways (Formerly T'way Air) flight deals from Seoul to Jeju City. Data last updated 11 October 2026 and is based on user searches.

Discover last-minute Trinity Airways (Formerly T'way Air) flight deals from Seoul to Jeju City. Data last updated 11 October 2026 and is based on user searches.

One-way Trinity Airways (Formerly T'way Air) flights to Jeju CitySearch for one-way Trinity Airways (Formerly T'way Air) flight options to Jeju City. Find affordable one-way fares based on user searches. Data last updated 11 October 2026.

Search for one-way Trinity Airways (Formerly T'way Air) flight options to Jeju City. Find affordable one-way fares based on user searches. Data last updated 11 October 2026.

Can I get a flight from Seoul to Jeju City on Trinity Airways (Formerly T'way Air) for under Rp 1,787,630?

Trinity Airways (Formerly T'way 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 November. The most expensive months are October and August.

Weekly Trinity Airways (Formerly T'way Air) flight availability from Seoul to Jeju City

The most Trinity Airways (Formerly T'way Air) flights from SEL to CJU are scheduled on a Tuesday (16 on average). You will have fewer Trinity Airways (Formerly T'way Air) flight options on Monday, which is when the least amount of flights are scheduled (14 on average).

When is the best time to book a flight to Jeju City with Trinity Airways (Formerly T'way Air)?

The best time to book a flight to Jeju City with Trinity Airways (Formerly T'way Air) is 27 days before departure. On average, fares are higher if you book 82 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.

Complete your trip

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

Other airlines servicing 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 11 October 2026.

See what others are saying about Trinity Airways (Formerly T'way Air)

Overview

100% Free

Book With Flexibility

Travel Smart

Cheapest Trinity Airways (Formerly T'way Air) flights from Seoul to Jeju City
Explore the most affordable Trinity Airways (Formerly T'way Air) flight options available from Seoul to Jeju City. Find the lowest fares with prices last updated on 11 October 2026.

Direct Trinity Airways (Formerly T'way Air) flights from Seoul to Jeju City
Explore direct Trinity Airways (Formerly T'way 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 11 October 2026.

Last-minute Trinity Airways (Formerly T'way Air) flights from Seoul to Jeju City
Discover last-minute Trinity Airways (Formerly T'way Air) flight deals from Seoul to Jeju City. Data last updated 11 October 2026 and is based on user searches.

One-way Trinity Airways (Formerly T'way Air) flights to Jeju City
Search for one-way Trinity Airways (Formerly T'way Air) flight options to Jeju City. Find affordable one-way fares based on user searches. Data last updated 11 October 2026.