Cheapest return flights from Seoul to Cheju in September from 23€

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

Return flights

16 Sep - 18 Sep Air Busan direct
16 Sep - 17 Sep Air Busan direct
09 Sep - 18 Sep Air Busan direct
09 Sep - 11 Sep Air Busan direct
29 Sep - 30 Sep Eastar Jet direct
09 Sep - 25 Sep Eastar Jet direct
09 Sep - 17 Sep Eastar Jet direct
09 Sep - 24 Sep Eastar Jet direct
16 Sep - 25 Sep Jeju Air direct
16 Sep - 24 Sep Jeju Air direct
29 Sep - 01 Oct Eastar Jet direct
29 Sep - 15 Oct Eastar Jet direct
29 Sep - 16 Oct Eastar Jet direct
16 Sep - 01 Oct Jeju Air direct
29 Sep - 02 Oct Eastar Jet direct
10 Sep - 01 Oct Jin Air direct
15 Sep - 01 Oct Jeju Air direct
23 Sep - 01 Oct Jin Air direct
29 Sep - 14 Oct Eastar Jet direct
22 Sep - 01 Oct Jin Air direct

Also check the deals for one-way flights from Seoul to Cheju in September.

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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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