Cheapest return flights from Bucharest to Bangkok in September from $605

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

Return flights

27 Sep - 04 Oct Austrian Airlines
24 Sep - 06 Oct SWISS
15 Sep - 24 Sep SWISS
16 Sep - 23 Sep SWISS
21 Sep - 02 Oct SWISS
22 Sep - 30 Sep SWISS
22 Sep - 29 Sep SWISS
17 Sep - 24 Sep SWISS
12 Sep - 24 Sep Austrian Airlines
08 Sep - 29 Sep Austrian Airlines
03 Sep - 10 Sep Turkish Airlines
10 Sep - 16 Sep Turkish Airlines
04 Sep - 15 Sep Turkish Airlines
20 Sep - 02 Oct SWISS

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

Skyscanner

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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