Cheapest return flights from Istanbul to Oslo in September from $146

Best time to book flights for Istanbul (IST) to Oslo (OSL) flights at AirHint

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

Return flights

17 Sep - 08 Oct Norwegian direct
24 Sep - 15 Oct Norwegian direct
24 Sep - 08 Oct Norwegian direct
03 Sep - 17 Sep Norwegian direct
03 Sep - 07 Sep Norwegian direct
17 Sep - 21 Sep Norwegian direct
17 Sep - 01 Oct Norwegian direct
03 Sep - 10 Sep Norwegian direct
17 Sep - 20 Sep Norwegian direct
03 Sep - 09 Sep Norwegian
03 Sep - 21 Sep Norwegian direct
03 Sep - 14 Sep Norwegian direct
24 Sep - 01 Oct Norwegian direct
03 Sep - 09 Sep Norwegian direct
08 Sep - 12 Sep Pegasus Airlines direct
27 Sep - 04 Oct Pegasus Airlines
27 Sep - 04 Oct Pegasus Airlines direct
21 Sep - 08 Oct Norwegian direct
14 Sep - 01 Oct Norwegian direct
21 Sep - 01 Oct Norwegian direct

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