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

Return flights

29 Oct - 06 Nov	TAP
31 Oct - 07 Nov	TAP
31 Oct - 11 Nov	TAP
30 Oct - 05 Nov	TAP
30 Oct - 12 Nov	TAP
31 Oct - 04 Nov	TAP
29 Oct - 04 Nov	TAP
13 Oct - 20 Oct	TAP
30 Oct - 13 Nov	TAP
14 Oct - 15 Oct	Vueling Airlines
13 Oct - 16 Oct	TAP
30 Oct - 04 Nov	TAP
06 Oct - 15 Oct	Vueling Airlines
11 Oct - 15 Oct	Vueling Airlines
13 Oct - 15 Oct	Vueling Airlines
06 Oct - 15 Nov	Vueling Airlines
14 Oct - 22 Oct	Vueling Airlines
07 Oct - 08 Oct	Vueling Airlines
04 Oct - 15 Oct	Vueling Airlines
20 Oct - 22 Oct	Vueling Airlines

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 132€

Return flights