Cheapest return flights from Oslo to Istanbul in September from $164

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

Return flights

01 Sep - 09 Sep Pegasus Airlines direct
10 Sep - 18 Sep Pegasus Airlines direct
07 Sep - 24 Sep Norwegian direct
14 Sep - 24 Sep Norwegian direct
16 Sep - 23 Sep Pegasus Airlines direct
01 Sep - 11 Sep Pegasus Airlines direct
17 Sep - 24 Sep Norwegian direct
10 Sep - 24 Sep Norwegian direct
07 Sep - 17 Sep Norwegian direct
14 Sep - 17 Sep Norwegian direct
14 Sep - 01 Oct Norwegian direct
17 Sep - 01 Oct Norwegian direct
22 Sep - 07 Oct Ryanair
21 Sep - 01 Oct Norwegian direct
24 Sep - 08 Oct Norwegian
19 Sep - 02 Oct Pegasus Airlines
23 Sep - 08 Oct Ryanair
25 Sep - 07 Oct Ryanair
24 Sep - 01 Oct Norwegian direct
20 Sep - 08 Oct Pegasus Airlines

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

Skyscanner

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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