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

Return flights

31 Oct - 03 Nov	Ryanair
30 Oct - 03 Nov	Ryanair
23 Oct - 30 Oct	Ryanair
23 Oct - 27 Oct	Ryanair
10 Oct - 21 Oct	Ryanair
10 Oct - 13 Oct	Ryanair
09 Oct - 13 Oct	Ryanair
24 Oct - 27 Oct	Ryanair
10 Oct - 12 Oct	Ryanair
08 Oct - 17 Oct	easyJet
07 Oct - 15 Oct	easyJet
06 Oct - 13 Oct	easyJet
30 Oct - 02 Nov	Ryanair
31 Oct - 02 Nov	Ryanair
20 Oct - 22 Nov	KLM
20 Oct - 22 Nov	Lufthansa	direct
30 Oct - 02 Nov	Lufthansa	direct
30 Oct - 03 Nov	Lufthansa	direct
31 Oct - 02 Nov	Lufthansa	direct
31 Oct - 03 Nov	Lufthansa	direct

Also check the deals for one-way flights from Frankfurt 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 Frankfurt to Oslo in October from $139

Return flights