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

Return flights

24 Sep - 01 Oct	China Eastern
18 Sep - 03 Oct	Air China
29 Sep - 26 Oct	AJet
22 Sep - 22 Oct	Air China
18 Sep - 28 Oct	AJet
29 Sep - 30 Oct	AJet
29 Sep - 12 Oct	AJet
19 Sep - 01 Oct	China Eastern
22 Sep - 01 Oct	China Eastern
20 Sep - 01 Oct	China Eastern
18 Sep - 25 Sep	Etihad Airways
23 Sep - 30 Sep	Etihad Airways
16 Sep - 23 Sep	Saudia
17 Sep - 24 Sep	Etihad Airways
22 Sep - 25 Sep	Pegasus Airlines
25 Sep - 30 Sep	Etihad Airways
19 Sep - 26 Sep	Etihad Airways
17 Sep - 23 Sep	Etihad Airways
18 Sep - 30 Sep	Etihad Airways
18 Sep - 23 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 $525

Return flights