Cheapest return flights from Oslo to Istanbul in September from 143€

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

Return flights

07 Sep - 24 Sep Norwegian direct
12 Sep - 17 Sep Ryanair
10 Sep - 24 Sep Norwegian direct
01 Sep - 24 Sep Wizz Air
17 Sep - 24 Sep Norwegian direct
13 Sep - 01 Oct Ryanair
07 Sep - 17 Sep Norwegian direct
14 Sep - 24 Sep Norwegian direct
01 Sep - 24 Sep Pegasus Airlines direct
01 Sep - 09 Sep Pegasus Airlines direct
03 Sep - 24 Sep Ryanair
17 Sep - 01 Oct Norwegian direct
14 Sep - 01 Oct Norwegian direct
13 Sep - 01 Oct Pegasus Airlines direct
12 Sep - 01 Oct Wizz Air
21 Sep - 01 Oct Norwegian direct
12 Sep - 01 Oct Pegasus Airlines direct
24 Sep - 01 Oct Norwegian direct
21 Sep - 08 Oct Norwegian direct
20 Sep - 04 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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