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

Return flights

20 Oct - 31 Oct	KLM
07 Oct - 13 Oct	KLM
02 Oct - 06 Oct	KLM
09 Oct - 13 Oct	KLM
07 Oct - 15 Oct	KLM
21 Oct - 23 Oct	SWISS
28 Oct - 31 Oct	SWISS
21 Oct - 28 Oct	KLM
28 Oct - 04 Nov	SWISS
01 Oct - 14 Oct	Lufthansa
08 Oct - 15 Oct	Lufthansa
30 Oct - 06 Nov	SWISS
29 Oct - 05 Nov	SWISS
29 Oct - 01 Nov	KLM
28 Oct - 01 Nov	SWISS
28 Oct - 03 Nov	SWISS
31 Oct - 09 Nov	SWISS
31 Oct - 03 Nov	KLM
29 Oct - 02 Nov	SWISS
28 Oct - 02 Nov	SWISS

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

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 October from $255

Return flights