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

Return flights

07 Oct - 12 Oct	Wideroe
16 Oct - 19 Oct	Wideroe
01 Oct - 08 Oct	Wideroe	direct
24 Oct - 25 Oct	Wideroe	direct
24 Oct - 28 Oct	Wideroe	direct
24 Oct - 27 Oct	Wideroe	direct
02 Oct - 10 Oct	Wideroe	direct
22 Oct - 23 Oct	Wideroe	direct
09 Oct - 13 Oct	Wideroe	direct
07 Oct - 08 Oct	Wideroe	direct
31 Oct - 02 Nov	Wideroe
26 Oct - 02 Nov	Wideroe

Also check the deals for one-way flights from Sandefjord 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 Sandefjord to Trondheim in October from $111

Return flights