AirHint found the following cheapest return flights from Rome (ROM) to Trondheim (TRD) in October 2025 (see full year).

Return flights

30 Oct - 03 Nov	Wizz Air
22 Oct - 27 Oct	Wizz Air
01 Oct - 26 Oct	Wizz Air
22 Oct - 26 Oct	Wizz Air Malta
23 Oct - 26 Oct	Vueling Airlines
29 Oct - 02 Nov	Wizz Air
23 Oct - 27 Oct	Wizz Air Malta
08 Oct - 15 Oct	Wizz Air
17 Oct - 24 Oct	Wizz Air
01 Oct - 08 Oct	Wizz Air
01 Oct - 05 Oct	Wizz Air
02 Oct - 08 Oct	KLM

Also check the deals for one-way flights from Rome to Trondheim 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 Rome to Trondheim in October from $119

Return flights