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

Return flights

07 Oct - 14 Oct	easyJet
01 Oct - 07 Oct	easyJet
23 Oct - 05 Nov	Ryanair
21 Oct - 05 Nov	Vueling Airlines
13 Oct - 15 Oct	Ryanair
01 Oct - 12 Oct	easyJet
13 Oct - 20 Oct	easyJet
06 Oct - 12 Oct	easyJet
16 Oct - 19 Oct	easyJet
07 Oct - 15 Oct	easyJet
02 Oct - 07 Oct	easyJet
10 Oct - 15 Oct	easyJet
29 Oct - 06 Nov	Vueling Airlines
29 Oct - 01 Nov	easyJet
31 Oct - 03 Nov	Ryanair
29 Oct - 13 Nov	Vueling Airlines
31 Oct - 03 Nov	TAP	direct
23 Oct - 05 Nov	TAP	direct
25 Oct - 06 Nov	Vueling Airlines
29 Oct - 01 Nov	TAP	direct

Also check the deals for one-way flights from Lisbon to Oslo 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 Lisbon to Oslo in October from 128€

Return flights