Cheapest return flights from Oslo to Istanbul in September from $159

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

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

Return flights

10 Sep - 24 Sep Norwegian direct
21 Sep - 01 Oct Norwegian direct
21 Sep - 24 Sep Norwegian direct
23 Sep - 07 Oct Pegasus Airlines
08 Sep - 02 Oct Pegasus Airlines
08 Sep - 02 Oct Pegasus Airlines 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.

Book a cheap hotel in Istanbul

Cheap car rent in Istanbul