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

Return flights

14 Oct - 20 Oct	Wizz Air
07 Oct - 14 Oct	Wizz Air
14 Oct - 18 Oct	Wizz Air
21 Oct - 28 Oct	Wizz Air
16 Oct - 18 Oct	Pegasus Airlines	direct
10 Oct - 13 Oct	Pegasus Airlines
14 Oct - 18 Oct	Pegasus Airlines	direct
15 Oct - 22 Oct	Pegasus Airlines	direct
21 Oct - 28 Oct	Pegasus Airlines	direct
25 Oct - 08 Nov	Pegasus Airlines	direct
07 Oct - 14 Oct	Pegasus Airlines	direct
22 Oct - 01 Nov	Pegasus Airlines	direct

Also check the deals for one-way flights from Oslo to Istanbul 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 Oslo to Istanbul in October from $110

Return flights