Cheapest return flights from Chicago to Oslo in December from $533

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

Return flights

03 Dec - 07 Dec Delta
18 Dec - 10 Jan Frontier Airlines
23 Dec - 31 Dec Frontier Airlines
20 Dec - 28 Dec Frontier Airlines
17 Dec - 21 Dec Southwest Airlines
24 Dec - 31 Dec Delta
26 Dec - 31 Dec Delta
27 Dec - 31 Dec Delta
21 Dec - 28 Dec Delta
25 Dec - 31 Dec Delta

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

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