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

Return flights

22 Sep - 04 Oct	Saudia
01 Sep - 18 Sep	Saudia
04 Sep - 18 Sep	Saudia
17 Sep - 27 Sep	Saudia
01 Sep - 04 Oct	Saudia
05 Sep - 18 Sep	Saudia
15 Sep - 28 Oct	Saudia
15 Sep - 25 Sep	Saudia
01 Sep - 11 Sep	Saudia
07 Sep - 27 Sep	Saudia
21 Sep - 30 Sep	Saudia
19 Sep - 04 Oct	Saudia
09 Sep - 23 Sep	Saudia
12 Sep - 25 Sep	Saudia
11 Sep - 04 Oct	Saudia
29 Sep - 22 Oct	Saudia
16 Sep - 01 Oct	Saudia
24 Sep - 01 Oct	Saudia
01 Sep - 01 Oct	Saudia
29 Sep - 27 Oct	Saudia

Also check the deals for one-way flights from Geneva 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 Geneva to Bangkok in September from 394€

Return flights