AirHint found the following cheapest return flights from Chicago (ORD) to Oslo (OSL) in July 2025 (see full year).

Return flights

15 Jul - 22 Jul	Spirit Airlines
08 Jul - 17 Jul	Spirit Airlines
27 Jul - 03 Aug	Scandinavian Airlines
20 Jul - 30 Jul	Icelandair
25 Jul - 01 Aug	Scandinavian Airlines
17 Jul - 10 Aug	Delta
05 Jul - 10 Jul	Delta
31 Jul - 07 Aug	Scandinavian Airlines
23 Jul - 30 Jul	United

Also check the deals for one-way flights from Chicago to Oslo 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 return flights from Chicago to Oslo in July from 486€

Return flights