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

Return flights

11 Jan - 25 Jan	Icelandair
15 Jan - 20 Jan	Icelandair
25 Jan - 12 Feb	Icelandair
23 Jan - 25 Jan	Icelandair
26 Jan - 01 Feb	Spirit Airlines
14 Jan - 07 Feb	TAP
19 Jan - 26 Jan	Icelandair
10 Jan - 31 Jan	Icelandair
09 Jan - 13 Jan	Icelandair
15 Jan - 07 Feb	Icelandair
08 Jan - 17 Jan	Icelandair
31 Jan - 06 Feb	Icelandair
26 Jan - 21 Feb	Icelandair
29 Jan - 01 Feb	Icelandair
13 Jan - 07 Feb	Icelandair
05 Jan - 10 Jan	Icelandair
31 Jan - 09 Feb	Spirit Airlines
04 Jan - 10 Jan	Icelandair
05 Jan - 12 Jan	Icelandair
21 Jan - 14 Feb	TAP

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 414€

Return flights