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

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

Return flights

03 Sep - 10 Sep Icelandair
06 Sep - 13 Sep Icelandair
05 Sep - 13 Sep Icelandair
21 Sep - 28 Sep Icelandair
04 Sep - 15 Sep Icelandair
09 Sep - 16 Sep Scandinavian Airlines
15 Sep - 22 Sep Scandinavian Airlines
30 Sep - 07 Oct Scandinavian Airlines
18 Sep - 25 Sep Scandinavian Airlines
12 Sep - 19 Sep Icelandair
27 Sep - 04 Oct Scandinavian Airlines
24 Sep - 01 Oct United

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

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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