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

Return flights

31 Dec - 12 Jan	easyJet
14 Dec - 18 Dec	KM Malta Airlines
14 Dec - 17 Dec	KM Malta Airlines
11 Dec - 15 Dec	easyJet
15 Dec - 18 Dec	easyJet
11 Dec - 21 Dec	easyJet
31 Dec - 10 Jan	easyJet
14 Dec - 21 Dec	easyJet
14 Dec - 15 Dec	KM Malta Airlines
11 Dec - 28 Jan	easyJet
26 Dec - 31 Dec	easyJet
11 Dec - 13 Dec	easyJet
28 Dec - 31 Dec	easyJet
31 Dec - 01 Jan	easyJet
31 Dec - 07 Jan	easyJet
31 Dec - 06 Jan	easyJet
26 Dec - 08 Jan	easyJet
12 Dec - 14 Jan	Wizz Air UK
27 Dec - 08 Jan	Ryanair
10 Dec - 07 Jan	easyJet

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 $166

Return flights