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

Return flights

14 Jan - 19 Jan	Icelandair
12 Jan - 20 Jan	Icelandair
13 Jan - 20 Jan	Icelandair
19 Jan - 28 Jan	Icelandair
16 Jan - 19 Jan	Icelandair
08 Jan - 13 Jan	Icelandair
23 Jan - 25 Jan	Icelandair
27 Jan - 04 Feb	Spirit Airlines
12 Jan - 23 Jan	Spirit Airlines
10 Jan - 19 Jan	Icelandair
11 Jan - 20 Jan	Icelandair
27 Jan - 21 Feb	Icelandair
30 Jan - 21 Feb	Icelandair
29 Jan - 21 Feb	Icelandair
31 Jan - 21 Feb	Icelandair
14 Jan - 07 Feb	Icelandair
28 Jan - 21 Feb	Icelandair
14 Jan - 02 Feb	Icelandair
15 Jan - 07 Feb	Icelandair
26 Jan - 21 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 $425

Return flights