Cheap flights from Jeju to Seoul from $20 CJU → GMP, ICN

Found recently, and the cheapest we hold

What have prices looked like?

Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $36 to $66.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

We hold no other 8-night return fares leaving within 3 days of 21 Dec to compare.

Every date we hold

113 fares on 14 departure dates

Which month looks cheapest?

December 2026 is the cheapest month — from $50.

Found recently, and the cheapest we hold

It is also the cheapest one-way we hold, of any age.

What have prices looked like?

Over 49 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $15 to $23.

Those were the prices on those days, not today's.

Could nearby dates be cheaper?

No. We hold one-way fares on 3 other departure dates within 3 days of 22 Dec, and none is cheaper.

Every date we hold

293 fares on 89 departure dates

Which month looks cheapest?

December 2026 is the cheapest month — from $20.

Return

The cheapest fares were 0 to 6 days before departure.

From the cheapest return each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

One-way

Fares 90 to 179 days before departure were typically 13% lower than 0 to 6 days before departure.

From the cheapest one-way each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

How much is a return flight from Jeju to Seoul?

The cheapest return found recently is $64 with Air Seoul, 21 Dec to 29 Dec, found 2 days ago. The cheapest return we hold, of any age, is $50 with Jeju Air, 8 Dec to 10 Dec, found 4 days ago. The cheapest return fare on each of 14 departure dates is usually $68 to $184.

How much is a one-way flight from Jeju to Seoul?

The cheapest one-way found recently is $20 with Jeju Air, 22 Dec, found 2 days ago. The cheapest one-way fare on each of 89 departure dates is usually $26 to $85.

What is the cheapest month to fly from Jeju to Seoul?

December 2026 is the cheapest month for a return, from $50, 8 Dec to 10 Dec, found 4 days ago. It is the cheapest month for a one-way too, from $20, 22 Dec, found 2 days ago.

Every date in December 2026

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

In 49 days of prices between 24 Sept and 11 Nov, return fares were cheapest 0 to 6 days before departure. One-way fares 90 to 179 days before departure were typically 13% lower than 0 to 6 days before departure.

Is there a direct flight from Jeju to Seoul?

Yes, the cheapest nonstop return found recently is $64 with Air Seoul, 21 Dec to 29 Dec, found 2 days ago. The cheapest nonstop one-way found recently is $20 with Jeju Air, 22 Dec, found 2 days ago.

How long is the flight from Jeju to Seoul?

The cheapest nonstop one-way found recently, with Jeju Air on 22 Dec, takes 1 h 15 min from Jeju International Airport (CJU) to Gimpo International Airport (GMP).

Which airlines have the cheapest flights from Jeju to Seoul?

Between 16 Nov and 18 May 2027, Korean Air has the cheapest return on 5 of the 14 departure dates we hold, Jeju Air on 4 and Air Seoul on 2. Between 14 Nov and 17 Oct 2027, Korean Air has the cheapest one-way on 25 of the 89 departure dates we hold, Air Seoul on 19 and Jeju Air on 16.