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

Return flights

08 Sep - 15 Sep	Jetstar
11 Sep - 22 Sep	Jetstar
04 Sep - 13 Sep	Jetstar
23 Sep - 29 Sep	Jetstar
05 Sep - 12 Sep	Jetstar
16 Sep - 24 Sep	Jetstar
30 Sep - 27 Oct	Jetstar
01 Sep - 30 Sep	Jetstar
02 Sep - 16 Sep	Jetstar
15 Sep - 20 Sep	Singapore Airlines
01 Sep - 16 Oct	Jetstar
12 Sep - 30 Sep	Singapore Airlines
30 Sep - 10 Oct	Jetstar
05 Sep - 10 Oct	Jetstar
09 Sep - 14 Oct	Jetstar
27 Sep - 03 Oct	Jetstar
27 Sep - 10 Oct	Jetstar
29 Sep - 07 Oct	Jetstar
23 Sep - 14 Oct	Jetstar
23 Sep - 18 Oct	Singapore Airlines

Also check the deals for one-way flights from Adelaide 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 Adelaide to Bangkok in September from 412€

Return flights