Cheapest return flights from Chicago to Oslo in September from 525€

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

Return flights

30 Sep - 07 Oct Scandinavian Airlines
29 Sep - 06 Oct Scandinavian Airlines
28 Sep - 05 Oct Scandinavian Airlines
27 Sep - 04 Oct Scandinavian Airlines
22 Sep - 29 Sep Scandinavian Airlines
15 Sep - 22 Sep Scandinavian Airlines
11 Sep - 18 Sep Air France
06 Sep - 13 Sep Air France
14 Sep - 21 Sep Air France
13 Sep - 20 Sep Air France
07 Sep - 14 Sep Air France
12 Sep - 19 Sep Air France
09 Sep - 16 Sep Scandinavian Airlines
21 Sep - 01 Oct Aer Lingus
01 Sep - 08 Sep Scandinavian Airlines
24 Sep - 01 Oct Scandinavian Airlines

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

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