Cheapest return flights from Chicago to Oslo in September from 484€

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

Return flights

21 Sep - 01 Oct Air France
18 Sep - 27 Sep Lufthansa
09 Sep - 16 Sep British Airways
02 Sep - 09 Sep British Airways
01 Sep - 08 Sep British Airways
08 Sep - 15 Sep British Airways
03 Sep - 10 Sep British Airways
13 Sep - 20 Sep British Airways
06 Sep - 13 Sep British Airways
07 Sep - 14 Sep British Airways
05 Sep - 12 Sep British Airways

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

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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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