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

Return flights

30 Dec - 13 Jan	Pegasus Airlines
29 Dec - 29 Jan	China Eastern
30 Dec - 31 Jan	Pegasus Airlines
31 Dec - 28 Jan	AJet
15 Dec - 25 Dec	AJet
30 Dec - 29 Jan	Pegasus Airlines
31 Dec - 29 Jan	AJet
29 Dec - 15 Jan	China Eastern
31 Dec - 27 Jan	AJet
31 Dec - 22 Jan	AJet
30 Dec - 21 Jan	Pegasus Airlines
11 Dec - 25 Dec	AJet
11 Dec - 23 Dec	AJet
11 Dec - 21 Dec	AJet
11 Dec - 18 Dec	AJet
15 Dec - 19 Dec	Air China
15 Dec - 27 Dec	Air China
15 Dec - 31 Dec	Air China
11 Dec - 26 Dec	AJet
11 Dec - 15 Dec	Etihad Airways

Also check the deals for one-way flights from Geneva to Bangkok in December.

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 December from $666

Return flights