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

One-Way flights

30 Dec	Pegasus Airlines	direct
13 Dec	Wizz Air Malta
23 Dec	Aegean Airlines
02 Dec	Pegasus Airlines	direct
08 Dec	Pegasus Airlines	direct
25 Dec	Air Serbia
14 Dec	Air Serbia
15 Dec	Air Serbia
11 Dec	Pegasus Airlines	direct
17 Dec	Scandinavian Airlines

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 86€

One-Way flights