AirHint found the following cheapest return flights from Hiroshima (HIJ) to Bangkok (BKK) in September 2025 (see full year).

Return flights

11 Sep - 15 Sep	Jeju Air
07 Sep - 11 Sep	Jeju Air
13 Sep - 15 Sep	Jeju Air
14 Sep - 21 Sep	Jeju Air
14 Sep - 18 Sep	Jeju Air
19 Sep - 23 Sep	HK Express
12 Sep - 19 Sep	HK Express
07 Sep - 10 Sep	China Airlines
10 Sep - 17 Sep	China Airlines
26 Sep - 30 Sep	China Airlines
25 Sep - 04 Oct	China Airlines
28 Sep - 02 Oct	China Airlines
29 Sep - 03 Oct	ANA

Also check the deals for one-way flights from Hiroshima to Bangkok 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 Hiroshima to Bangkok in September from $280

Return flights