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

Return flights

25 Aug - 27 Aug	Ryanair
29 Aug - 04 Sep	Wizz Air
31 Aug - 07 Sep	Wizz Air
23 Aug - 27 Aug	Norwegian Air Sweden AOC
20 Aug - 21 Aug	Ryanair
26 Aug - 28 Aug	Ryanair
28 Aug - 01 Sep	Wizz Air
20 Aug - 27 Aug	Ryanair
22 Aug - 24 Aug	Ryanair
29 Aug - 02 Sep	Ryanair
28 Aug - 05 Sep	Wizz Air
29 Aug - 08 Sep	Ryanair
23 Aug - 24 Aug	Norwegian Air Sweden AOC
30 Aug - 06 Sep	Ryanair
26 Aug - 02 Sep	Ryanair
21 Aug - 24 Aug	Ryanair
20 Aug - 21 Sep	Ryanair
30 Aug - 01 Sep	Ryanair
20 Aug - 22 Aug	Ryanair
27 Aug - 30 Aug	Wizz Air

Also check the deals for one-way flights from Sandefjord to Keflavik in August.

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 August from 291€

Return flights