AirHint found the following cheapest return flights from Chicago (ORD) to London (LGW) in January 2026 (see full year).

Return flights

19 Jan - 22 Jan	Spirit Airlines
25 Jan - 31 Jan	Icelandair
11 Jan - 10 Feb	Icelandair
19 Jan - 26 Jan	Icelandair
30 Jan - 22 Feb	Icelandair
18 Jan - 23 Jan	Icelandair
08 Jan - 16 Jan	Icelandair
26 Jan - 02 Feb	Spirit Airlines
26 Jan - 09 Feb	Spirit Airlines
24 Jan - 10 Feb	Spirit Airlines
20 Jan - 30 Jan	Icelandair
25 Jan - 10 Feb	Spirit Airlines
23 Jan - 26 Jan	Icelandair
11 Jan - 15 Jan	Icelandair
17 Jan - 24 Jan	Icelandair
19 Jan - 27 Jan	Icelandair
29 Jan - 05 Feb	Icelandair
24 Jan - 26 Feb	Icelandair
12 Jan - 12 Feb	Icelandair
26 Jan - 28 Feb	Icelandair

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

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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Cheapest return flights from Chicago to London in January from 393€

Return flights