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

Return flights

14 Oct - 25 Nov	SWISS
29 Oct - 05 Nov	ITA Airways
28 Oct - 06 Nov	Lufthansa
28 Oct - 05 Nov	ITA Airways
22 Oct - 05 Nov	Lufthansa
21 Oct - 23 Oct	SWISS
14 Oct - 23 Oct	SWISS
22 Oct - 23 Oct	SWISS
21 Oct - 04 Nov	SWISS
22 Oct - 07 Nov	SWISS
14 Oct - 22 Oct	SWISS
30 Oct - 05 Nov	ITA Airways
28 Oct - 04 Nov	Lufthansa
31 Oct - 06 Nov	SWISS
14 Oct - 24 Oct	SWISS
21 Oct - 24 Oct	SWISS
14 Oct - 15 Oct	SWISS
14 Oct - 21 Oct	SWISS
15 Oct - 17 Oct	ITA Airways
07 Oct - 22 Oct	Lufthansa

Also check the deals for one-way flights from London to Lisbon 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 Lisbon in October from $246

Return flights