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

Return flights

10 Dec - 13 Dec	British Airways	direct
02 Dec - 05 Dec	British Airways	direct
03 Dec - 07 Dec	British Airways	direct
03 Dec - 06 Dec	British Airways	direct
05 Dec - 07 Dec	British Airways	direct
09 Dec - 12 Dec	British Airways	direct
04 Dec - 06 Dec	British Airways	direct
12 Dec - 09 Jan	British Airways	direct
11 Dec - 13 Dec	KLM
11 Dec - 04 Jan	KLM
25 Dec - 04 Jan	KLM
17 Dec - 22 Dec	KLM
27 Dec - 29 Dec	KLM
27 Dec - 03 Jan	KLM
23 Dec - 01 Jan	KLM
17 Dec - 04 Jan	KLM
23 Dec - 03 Jan	KLM
21 Dec - 03 Jan	Air France
19 Dec - 02 Jan	Air Serbia
19 Dec - 03 Jan	Air Serbia

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.

Book a cheap hotel in Bucharest

Cheap car rent in Bucharest

Cheapest return flights from London to Bucharest in December from 126€

Return flights