AirHint found the following cheapest return flights from Bucharest (OTP) to Bangkok (BKK) in October 2025 (see full year).

Return flights

02 Oct - 10 Nov	SWISS
07 Oct - 21 Oct	SWISS
07 Oct - 22 Oct	SWISS
07 Oct - 23 Oct	SWISS
06 Oct - 23 Oct	Austrian Airlines
14 Oct - 21 Oct	Austrian Airlines
14 Oct - 24 Oct	Austrian Airlines
24 Oct - 03 Nov	Air France
25 Oct - 02 Nov	Lufthansa
19 Oct - 03 Nov	SWISS
30 Oct - 06 Nov	SWISS
01 Oct - 15 Oct	Qatar Airways
25 Oct - 01 Nov	Condor

Also check the deals for one-way flights from Bucharest to Bangkok in October.

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 Bucharest to Bangkok in October from $700

Return flights