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

Return flights

05 Dec - 14 Dec	Delta
05 Dec - 13 Dec	Delta
10 Dec - 18 Dec	Delta
07 Dec - 14 Dec	Delta
10 Dec - 13 Dec	Delta
07 Dec - 17 Dec	Delta
06 Dec - 16 Dec	Delta
06 Dec - 14 Dec	Delta
06 Dec - 15 Dec	Delta
23 Dec - 01 Jan	Delta
28 Dec - 05 Jan	Delta
29 Dec - 05 Jan	Southwest Airlines
26 Dec - 05 Jan	Delta

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

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.

Book a cheap hotel in Oslo

Cheap car rent in Oslo

Cheapest return flights from Chicago to Oslo in December from 463€

Return flights