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

Return flights

14 May - 16 May	SWISS
08 May - 15 May	KLM
27 May - 29 May	SWISS
05 May - 06 May	SWISS
14 May - 19 May	SWISS
19 May - 26 May	SWISS
05 May - 21 May	SWISS
15 May - 18 May	SWISS
14 May - 18 May	SWISS
15 May - 19 May	SWISS
27 May - 01 Jun	SWISS
29 May - 05 Jun	Lufthansa
29 May - 02 Jun	Lufthansa
28 May - 02 Jun	KLM
28 May - 04 Jun	Lufthansa
25 May - 01 Jun	Lufthansa
31 May - 05 Jun	KLM
31 May - 04 Jun	KLM
30 May - 08 Jun	ITA Airways
31 May - 02 Jun	SWISS

Also check the deals for one-way flights from London to Bucharest in May.

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 May from $265

Return flights