AirHint found the following cheapest return flights from Oslo (OSL) to Istanbul (IST) in June 2026 (see full year).

Return flights

02 Jun - 07 Jun	Pegasus Airlines	direct
07 Jun - 18 Jun	Ryanair
25 Jun - 05 Jul	Air Serbia
23 Jun - 26 Jul	Air Serbia
23 Jun - 25 Jul	Air Serbia
23 Jun - 27 Jul	Air Serbia
23 Jun - 28 Jul	Air Serbia
19 Jun - 22 Jun	Norwegian
20 Jun - 05 Jul	Norwegian
28 Jun - 01 Jul	Norwegian	direct
07 Jun - 18 Jun	Turkish Airlines	direct
28 Jun - 08 Jul	Norwegian	direct
24 Jun - 01 Jul	Norwegian	direct
24 Jun - 08 Jul	Norwegian	direct
19 Jun - 22 Jun	Turkish Airlines	direct

Also check the deals for one-way flights from Oslo to Istanbul in June.

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 return flights from Oslo to Istanbul in June from 160€

Return flights