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

Return flights

29 May - 02 Jun	Ryanair
16 May - 23 May	Ryanair
29 May - 03 Jun	Ryanair
07 May - 10 May	Ryanair
21 May - 25 May	Ryanair
30 May - 02 Jun	Ryanair
25 May - 31 May	Ryanair
27 May - 31 May	Ryanair
08 May - 11 May	Ryanair
28 May - 03 Jun	Ryanair
22 May - 25 May	Ryanair
11 May - 25 May	Ryanair
29 May - 29 May	Ryanair
15 May - 22 May	Ryanair

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

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 Rome to Oslo in May from $239

Return flights