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

Return flights

29 Sep - 31 Oct	AJet
29 Sep - 27 Oct	AJet
18 Sep - 28 Oct	AJet
15 Sep - 28 Oct	AJet
18 Sep - 25 Sep	Etihad Airways
15 Sep - 02 Oct	Air China
19 Sep - 02 Oct	Air China
19 Sep - 03 Oct	Air China
29 Sep - 30 Oct	AJet
24 Sep - 28 Oct	Pegasus Airlines
22 Sep - 13 Oct	China Eastern
17 Sep - 29 Sep	Etihad Airways
16 Sep - 24 Sep	Etihad Airways
24 Sep - 30 Sep	Etihad Airways
16 Sep - 25 Sep	Etihad Airways
16 Sep - 30 Sep	Etihad Airways
16 Sep - 23 Sep	Etihad Airways
23 Sep - 30 Sep	Etihad Airways
18 Sep - 30 Sep	Etihad Airways
17 Sep - 24 Sep	Etihad Airways

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 445€

Return flights