AirHint found the following cheapest return flights from Seoul (ICN) to Saga (HSG) in September 2025 (see full year).

Return flights

29 Sep - 02 Oct	T'way Air	direct
01 Sep - 03 Sep	T'way Air	direct
08 Sep - 15 Sep	T'way Air	direct
07 Sep - 10 Sep	T'way Air	direct
14 Sep - 15 Sep	T'way Air	direct
10 Sep - 15 Sep	T'way Air	direct
01 Sep - 05 Sep	T'way Air	direct
15 Sep - 17 Sep	T'way Air	direct
14 Sep - 17 Sep	T'way Air	direct
03 Sep - 05 Sep	T'way Air	direct
07 Sep - 08 Sep	T'way Air	direct
07 Sep - 06 Oct	T'way Air	direct

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

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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Cheapest return flights from Seoul to Saga in September from 91€

Return flights