Cheapest one-way flights from Seoul to Cheju in September from $19

Best time to book flights for Seoul (GMP) to Cheju (CJU) flights at AirHint

AirHint found the following cheapest one-way flights from Seoul (GMP) to Cheju (CJU) in September 2025 (see full year).

One-Way flights

03 Sep T'way Air direct
17 Sep T'way Air direct
02 Sep T'way Air direct
16 Sep T'way Air direct
09 Sep T'way Air direct
10 Sep T'way Air direct
13 Sep T'way Air direct
08 Sep T'way Air direct
14 Sep Jeju Air direct
20 Sep T'way Air direct

Also check the deals for return flights from Seoul to Cheju in September.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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