Cheapest return flights from Oslo to Istanbul in September from 140€

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

Return flights

03 Sep - 09 Sep Wizz Air
19 Sep - 22 Sep Pegasus Airlines
07 Sep - 24 Sep Norwegian direct
14 Sep - 24 Sep Norwegian direct
19 Sep - 26 Sep Pegasus Airlines direct
03 Sep - 09 Sep Pegasus Airlines direct
03 Sep - 11 Sep Pegasus Airlines direct
17 Sep - 24 Sep Ryanair
19 Sep - 24 Sep Pegasus Airlines direct
02 Sep - 09 Sep Pegasus Airlines direct
14 Sep - 01 Oct Norwegian direct
17 Sep - 01 Oct Norwegian direct
30 Sep - 07 Oct Wizz Air
13 Sep - 04 Oct Pegasus Airlines
20 Sep - 08 Oct Ryanair
20 Sep - 07 Oct Ryanair
21 Sep - 01 Oct Norwegian direct
30 Sep - 03 Oct Norwegian
21 Sep - 08 Oct Norwegian direct
24 Sep - 01 Oct Norwegian direct

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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