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

Return flights

21 Oct - 28 Oct	Wizz Air
23 Oct - 28 Oct	Ryanair
31 Oct - 02 Nov	Ryanair
21 Oct - 27 Oct	Wizz Air
26 Oct - 28 Oct	Wizz Air
23 Oct - 27 Oct	Wizz Air
28 Oct - 01 Nov	Ryanair
29 Oct - 02 Nov	Ryanair
27 Oct - 01 Nov	Ryanair
29 Oct - 03 Nov	Ryanair
24 Oct - 26 Oct	Ryanair
24 Oct - 27 Oct	Ryanair
28 Oct - 31 Oct	Ryanair
18 Oct - 29 Oct	Ryanair
25 Oct - 27 Oct	Ryanair

Also check the deals for one-way flights from Sandefjord to Keflavik 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 Keflavik in October from 283€

Return flights