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

Return flights

31 Oct - 17 Nov	British Airways	direct
30 Oct - 07 Nov	Aegean Airlines
27 Oct - 07 Nov	Aegean Airlines
27 Oct - 07 Nov	British Airways	direct
30 Oct - 06 Nov	Aegean Airlines
30 Oct - 13 Nov	Aegean Airlines
27 Oct - 10 Nov	Aegean Airlines
30 Oct - 05 Nov	Aegean Airlines
29 Oct - 13 Nov	Aegean Airlines
31 Oct - 05 Nov	British Airways
29 Oct - 30 Oct	SWISS
28 Oct - 31 Oct	SWISS
30 Oct - 31 Oct	Lufthansa
28 Oct - 28 Oct	SWISS
27 Oct - 28 Oct	Lufthansa
27 Oct - 31 Oct	Lufthansa
29 Oct - 31 Oct	SWISS
27 Oct - 29 Oct	Lufthansa
28 Oct - 29 Oct	SWISS
29 Oct - 29 Oct	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 180€

Return flights