AirHint found the following cheapest return flights from London (LHR) to Bucharest (OTP) in December 2026 (see full year).

Return flights

03 Dec - 07 Dec	British Airways	direct
03 Dec - 04 Dec	British Airways	direct
05 Dec - 07 Dec	British Airways	direct
10 Dec - 10 Dec	British Airways	direct
01 Dec - 03 Dec	British Airways	direct
11 Dec - 14 Dec	KLM
11 Dec - 13 Dec	KLM
24 Dec - 06 Jan	KLM
04 Dec - 07 Dec	British Airways	direct
04 Dec - 06 Dec	British Airways	direct
11 Dec - 14 Dec	British Airways	direct
26 Dec - 09 Jan	KLM
29 Dec - 01 Jan	KLM
24 Dec - 01 Jan	KLM
23 Dec - 05 Jan	Austrian Airlines
11 Dec - 04 Jan	Lufthansa
23 Dec - 10 Jan	Austrian Airlines
31 Dec - 02 Jan	KLM
27 Dec - 02 Jan	KLM
17 Dec - 02 Jan	KLM

Also check the deals for one-way flights from London 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 London to Bucharest in December from 121€

Return flights