Cheapest return flights from Istanbul to Oslo in September from 141€

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

Return flights

28 Sep - 07 Oct Pegasus Airlines
23 Sep - 29 Sep Pegasus Airlines
28 Sep - 07 Oct Pegasus Airlines direct
27 Sep - 06 Oct Pegasus Airlines
26 Sep - 03 Oct Pegasus Airlines
19 Sep - 31 Oct Pegasus Airlines direct
25 Sep - 30 Sep Pegasus Airlines
27 Sep - 30 Sep Pegasus Airlines
29 Sep - 04 Oct Pegasus Airlines
22 Sep - 25 Sep Pegasus Airlines
27 Sep - 05 Oct Pegasus Airlines direct
27 Sep - 04 Oct Pegasus Airlines
27 Sep - 30 Sep Pegasus Airlines direct
20 Sep - 22 Sep Pegasus Airlines
22 Sep - 29 Sep Pegasus Airlines
23 Sep - 30 Sep Pegasus Airlines
27 Sep - 28 Sep Pegasus Airlines
26 Sep - 02 Oct Pegasus Airlines
28 Sep - 19 Oct Norwegian direct
25 Sep - 30 Sep Pegasus Airlines 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.

Book a cheap hotel in Oslo

Cheap car rent in Oslo

Feel free to contact us with any feedback or request another flight research.