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

Return flights

29 Oct - 14 Nov	Ryanair	direct
29 Oct - 07 Nov	Ryanair	direct
29 Oct - 17 Nov	Ryanair	direct
29 Oct - 31 Oct	Ryanair	direct
29 Oct - 10 Nov	Ryanair	direct
31 Oct - 14 Nov	Ryanair	direct
27 Oct - 29 Oct	Volotea
31 Oct - 17 Nov	Ryanair	direct
27 Oct - 31 Oct	Volotea
31 Oct - 03 Nov	Volotea
27 Oct - 14 Nov	Ryanair	direct
31 Oct - 10 Nov	Ryanair	direct
31 Oct - 03 Nov	Ryanair	direct
27 Oct - 29 Oct	Ryanair	direct
24 Oct - 29 Oct	Volotea
29 Oct - 30 Oct	Ryanair
28 Oct - 31 Oct	easyJet
20 Oct - 23 Oct	Volotea
24 Oct - 31 Oct	Volotea
27 Oct - 31 Oct	Ryanair	direct

Also check the deals for one-way flights from Lille 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 Lille to Porto in October from $136

Return flights