Cheapest return flights from Chicago to London in December from 441€

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

Return flights

02 Dec - 13 Dec Icelandair
02 Dec - 16 Dec Icelandair
12 Dec - 19 Dec Icelandair
01 Dec - 25 Dec Air Canada
25 Dec - 30 Dec Icelandair
01 Dec - 02 Jan Air Canada
22 Dec - 29 Dec Icelandair
23 Dec - 29 Dec Icelandair
05 Dec - 20 Dec Aer Lingus
30 Dec - 05 Jan Icelandair
18 Dec - 08 Jan Icelandair
21 Dec - 29 Dec Sun Country Airlines
22 Dec - 07 Jan Icelandair
16 Dec - 01 Jan Icelandair
30 Dec - 06 Jan SWISS
23 Dec - 01 Jan Icelandair
20 Dec - 31 Dec Sun Country Airlines
20 Dec - 04 Jan Icelandair
20 Dec - 11 Jan Sun Country Airlines
27 Dec - 03 Jan Icelandair

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

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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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