Cheapest one-way flights from Istanbul to Oslo in September from $61

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

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

One-Way flights

17 Sep Norwegian direct
03 Sep Norwegian direct
24 Sep Norwegian direct
10 Sep Norwegian direct
18 Sep Pegasus Airlines direct
23 Sep Pegasus Airlines direct
19 Sep Aegean Airlines
08 Sep Pegasus Airlines direct
22 Sep Pegasus Airlines direct
20 Sep Pegasus Airlines direct

Also check the deals for return 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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