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

Return flights

07 Oct - 21 Oct	KLM
08 Oct - 22 Oct	KLM
09 Oct - 13 Oct	KLM
09 Oct - 17 Oct	KLM
07 Oct - 13 Oct	KLM
08 Oct - 14 Oct	KLM
09 Oct - 14 Oct	KLM
14 Oct - 15 Oct	SWISS
07 Oct - 09 Oct	SWISS
14 Oct - 21 Oct	KLM
17 Oct - 07 Nov	SWISS
17 Oct - 08 Nov	SWISS
27 Oct - 03 Nov	Luxair
31 Oct - 03 Nov	Luxair
28 Oct - 01 Nov	SWISS
29 Oct - 01 Nov	SWISS
30 Oct - 03 Nov	Luxair
27 Oct - 10 Nov	Lufthansa
31 Oct - 02 Nov	SWISS
23 Oct - 02 Nov	Lufthansa

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 209€

Return flights