AirHint found the following cheapest return flights from Chicago (ORD) to Oslo (OSL) in March 2026 (see full year).

Return flights

02 Mar - 09 Mar	Scandinavian Airlines
12 Mar - 19 Mar	Scandinavian Airlines
13 Mar - 20 Mar	Scandinavian Airlines
22 Mar - 29 Mar	Icelandair
23 Mar - 30 Mar	Icelandair
26 Mar - 18 Apr	British Airways
27 Mar - 18 Apr	British Airways
03 Mar - 10 Mar	Icelandair

Also check the deals for one-way flights from Chicago to Oslo in March.

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 Chicago to Oslo in March from 339€

Return flights