AirHint found the following cheapest return flights from Istanbul (SAW) to Oslo (OSL) in September 2025 (see full year).

Return flights

10 Sep - 17 Sep	Pegasus Airlines	direct
08 Sep - 15 Sep	Pegasus Airlines	direct
03 Sep - 09 Sep	Pegasus Airlines
18 Sep - 21 Sep	Pegasus Airlines	direct
11 Sep - 14 Sep	Pegasus Airlines	direct
15 Sep - 22 Sep	Pegasus Airlines	direct
05 Sep - 07 Sep	Pegasus Airlines	direct
11 Sep - 13 Sep	Pegasus Airlines
08 Sep - 14 Sep	Pegasus Airlines
05 Sep - 19 Sep	Pegasus Airlines	direct
23 Sep - 12 Oct	Pegasus Airlines

Also check the deals for one-way flights from Istanbul to Oslo 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 Istanbul to Oslo in September from $194

Return flights