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

Return flights

24 Oct - 28 Oct	Luxair
27 Oct - 04 Nov	KLM
08 Oct - 14 Oct	KLM
24 Oct - 27 Oct	Luxair
30 Oct - 04 Nov	KLM
14 Oct - 28 Oct	SWISS
29 Oct - 04 Nov	KLM
28 Oct - 05 Nov	SWISS
28 Oct - 04 Nov	KLM
21 Oct - 28 Oct	SWISS
31 Oct - 04 Nov	KLM
24 Oct - 26 Oct	Luxair
22 Oct - 28 Oct	SWISS
30 Oct - 05 Nov	SWISS
30 Oct - 03 Nov	ITA Airways
04 Oct - 06 Oct	Luxair
06 Oct - 21 Oct	KLM
03 Oct - 06 Oct	Luxair
31 Oct - 03 Nov	ITA Airways
29 Oct - 03 Nov	Luxair

Also check the deals for one-way flights from London to Porto 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 Porto in October from 221€

Return flights