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

Return flights

20 Mar - 25 Mar	SWISS
14 Mar - 16 Mar	KLM
02 Mar - 04 Mar	SWISS
13 Mar - 15 Mar	SWISS
20 Mar - 22 Mar	SWISS
06 Mar - 09 Mar	KLM
20 Mar - 21 Mar	SWISS
09 Mar - 15 Mar	KLM
19 Mar - 22 Mar	SWISS
12 Mar - 19 Apr	SWISS
26 Mar - 29 Mar	SWISS
28 Mar - 04 Apr	KLM

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

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 March from $272

Return flights