Cheapest return flights from Chicago to London in December from 359€

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

Return flights

14 Dec - 17 Dec Scandinavian Airlines
04 Dec - 08 Dec Icelandair
30 Dec - 15 Jan Air Canada
30 Dec - 08 Jan Air Canada
29 Dec - 18 Jan Scandinavian Airlines
17 Dec - 23 Jan Scandinavian Airlines
12 Dec - 27 Dec Scandinavian Airlines
01 Dec - 09 Dec Air Canada
15 Dec - 10 Jan Scandinavian Airlines
29 Dec - 24 Jan Scandinavian Airlines
31 Dec - 14 Jan Scandinavian Airlines
31 Dec - 18 Jan Scandinavian Airlines
17 Dec - 27 Dec Scandinavian Airlines
29 Dec - 11 Jan Scandinavian Airlines
07 Dec - 14 Dec Icelandair
02 Dec - 09 Dec British Airways direct
05 Dec - 08 Dec Scandinavian Airlines
02 Dec - 08 Dec Icelandair
03 Dec - 10 Dec Icelandair
30 Dec - 15 Jan British Airways direct

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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