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

Return flights

30 Oct - 05 Nov	Ryanair
04 Oct - 11 Oct	Ryanair
30 Oct - 03 Nov	Ryanair
06 Oct - 11 Oct	Ryanair
06 Oct - 10 Oct	Ryanair
06 Oct - 13 Oct	Ryanair
26 Oct - 30 Oct	Ryanair
20 Oct - 30 Oct	Ryanair
04 Oct - 06 Oct	Ryanair
02 Oct - 04 Oct	Ryanair
14 Oct - 20 Oct	Ryanair
07 Oct - 12 Oct	Ryanair
01 Oct - 05 Nov	Norwegian Air Sweden AOC
18 Oct - 02 Nov	Ryanair
18 Oct - 01 Nov	Ryanair

Also check the deals for one-way flights from Helsinki 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.

Book a cheap hotel in Lisbon

Cheap car rent in Lisbon

Cheapest return flights from Helsinki to Lisbon in October from 168€

Return flights