Cheapest return flights from Chicago to Oslo in August from 367€

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

Return flights

19 Aug - 26 Aug Icelandair
16 Aug - 20 Aug Icelandair
18 Aug - 25 Aug Icelandair
21 Aug - 28 Aug Icelandair
27 Aug - 03 Sep Icelandair
17 Aug - 02 Sep Icelandair
24 Aug - 28 Aug Icelandair
08 Aug - 17 Aug Icelandair
08 Aug - 11 Aug Icelandair
07 Aug - 14 Aug Lufthansa
17 Aug - 24 Aug United
25 Aug - 01 Sep United
23 Aug - 30 Aug United
31 Aug - 07 Sep United
29 Aug - 05 Sep United

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

Skyscanner

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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