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

One-Way flights

29 Jul	Pegasus Airlines	direct
31 Jul	Pegasus Airlines	direct
28 Jul	Pegasus Airlines	direct
25 Jul	Pegasus Airlines	direct
24 Jul	Scandinavian Airlines
22 Jul	Wizz Air
26 Jul	Norwegian
26 Jul	Pegasus Airlines	direct
27 Jul	Pegasus Airlines	direct
19 Jul	Ryanair

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

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 July from $89

One-Way flights