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

Return flights

18 Aug - 25 Aug	Lufthansa
19 Aug - 26 Aug	United
20 Aug - 27 Aug	United
26 Aug - 02 Sep	United
27 Aug - 03 Sep	United
25 Aug - 01 Sep	Lufthansa
21 Aug - 28 Aug	United
22 Aug - 29 Aug	United
24 Aug - 31 Aug	Spirit Airlines
31 Aug - 07 Sep	Spirit Airlines
23 Aug - 30 Aug	United
30 Aug - 06 Sep	Spirit Airlines
28 Aug - 04 Sep	British Airways
29 Aug - 05 Sep	Spirit Airlines
02 Aug - 09 Aug	Spirit Airlines
01 Aug - 08 Aug	Spirit Airlines

Also check the deals for one-way flights from Houston 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 Houston to Bucharest in August from $629

Return flights