AirHint found the following cheapest return flights from Frankfurt (FRA) to Sandefjord (TRF) in September 2025 (see full year).

Return flights

11 Sep - 15 Sep	Ryanair
18 Sep - 22 Sep	Ryanair
30 Sep - 03 Oct	Ryanair
12 Sep - 15 Sep	Ryanair
12 Sep - 30 Sep	Ryanair
25 Sep - 30 Sep	Ryanair
18 Sep - 30 Sep	Ryanair
19 Sep - 22 Sep	Ryanair
12 Sep - 14 Sep	Ryanair
16 Sep - 24 Sep	Ryanair
23 Sep - 28 Sep	Ryanair
17 Sep - 01 Oct	easyJet
26 Sep - 10 Oct	LOT
28 Sep - 05 Oct	Ryanair
27 Sep - 03 Oct	Lufthansa
28 Sep - 02 Oct	Lufthansa
27 Sep - 05 Oct	Lufthansa
26 Sep - 05 Oct	LOT
29 Sep - 09 Oct	LOT
24 Sep - 01 Oct	LOT

Also check the deals for one-way flights from Frankfurt to Sandefjord in September.

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 Sandefjord in September from $137

Return flights