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

Return flights

25 Aug - 13 Sep	Hainan Airlines
26 Aug - 13 Sep	Hainan Airlines
01 Aug - 18 Aug	Thai VietJet Air
24 Aug - 13 Sep	IndiGo
25 Aug - 12 Sep	Hainan Airlines
26 Aug - 12 Sep	IndiGo
23 Aug - 30 Aug	Thai Lion Air
17 Aug - 24 Aug	Qatar Airways
19 Aug - 27 Aug	Qatar Airways
16 Aug - 24 Aug	Austrian Airlines

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

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 Bangkok to Bucharest in August from 498€

Return flights