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

Return flights

08 Dec - 11 Jan	British Airways
15 Dec - 23 Dec	British Airways
14 Dec - 22 Dec	British Airways
24 Dec - 31 Dec	British Airways
16 Dec - 24 Dec	British Airways
12 Dec - 20 Dec	British Airways
13 Dec - 21 Dec	Air France
17 Dec - 25 Dec	British Airways
24 Dec - 01 Jan	British Airways
23 Dec - 30 Dec	Lufthansa
22 Dec - 30 Dec	United
23 Dec - 31 Dec	British Airways

Also check the deals for one-way flights from Houston to Bucharest 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 Houston to Bucharest in December from $652

Return flights