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

One-Way flights

04 Dec	Pegasus Airlines	direct
09 Dec	Pegasus Airlines	direct
01 Dec	Pegasus Airlines	direct
11 Dec	Air Serbia
29 Dec	Pegasus Airlines	direct
11 Dec	Pegasus Airlines	direct
15 Dec	Pegasus Airlines	direct
13 Dec	Pegasus Airlines	direct
22 Dec	Pegasus Airlines	direct

Also check the deals for return flights from Oslo to Istanbul in December.

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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Cheapest one-way flights from Oslo to Istanbul in December from $91

One-Way flights