Cheapest return flights from Frankfurt to Oslo in September from $246

AirHint found the following cheapest return flights from Frankfurt (FRA) to Oslo (OSL) in September 2026 (see full year).

Return flights

18 Sep - 21 Sep Lufthansa
14 Sep - 25 Sep Ryanair
19 Sep - 26 Sep LOT
18 Sep - 21 Sep Lufthansa direct
12 Sep - 26 Sep Lufthansa direct
19 Sep - 26 Sep Lufthansa direct
14 Sep - 25 Sep Lufthansa direct

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

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