Cheapest return flights from Oslo to Istanbul in May from 138€

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

Return flights

18 May - 24 Jun Norwegian
05 May - 11 May Pegasus Airlines direct
05 May - 11 May Ryanair
01 May - 07 May Pegasus Airlines direct
01 May - 05 May Pegasus Airlines direct
18 May - 24 Jun Pegasus Airlines direct
22 May - 26 May Pegasus Airlines direct
13 May - 16 May Wizz Air Malta
19 May - 20 Jun Norwegian
21 May - 24 May Pegasus Airlines direct
11 May - 24 May Air Serbia
21 May - 25 May Pegasus Airlines direct
16 May - 23 May Norwegian
19 May - 20 Jun Pegasus Airlines direct

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

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