Cheapest return flights from Chicago to London in December from 1005€

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

Return flights

22 Dec - 15 Jan Frontier Airlines
22 Dec - 10 Jan Frontier Airlines
23 Dec - 10 Jan Frontier Airlines
23 Dec - 11 Jan Frontier Airlines
25 Dec - 01 Jan Frontier Airlines
25 Dec - 04 Jan Frontier Airlines
30 Dec - 06 Jan Frontier Airlines
28 Dec - 02 Jan Frontier Airlines
25 Dec - 03 Jan Frontier Airlines
25 Dec - 29 Dec Southwest Airlines
23 Dec - 26 Dec Frontier Airlines
22 Dec - 30 Dec Southwest Airlines
29 Dec - 03 Jan WestJet

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

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