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

Return flights

18 Jan - 29 Jan	TAP
30 Jan - 05 Feb	Icelandair
23 Jan - 29 Jan	TAP
16 Jan - 22 Jan	TAP
30 Jan - 07 Feb	TAP
28 Jan - 05 Feb	TAP
08 Jan - 15 Jan	Icelandair
30 Jan - 06 Feb	Icelandair
22 Jan - 29 Jan	Frontier Airlines
10 Jan - 16 Jan	Icelandair
30 Jan - 04 Feb	Spirit Airlines
26 Jan - 28 Feb	Spirit Airlines
24 Jan - 11 Feb	Icelandair
31 Jan - 05 Feb	Icelandair
31 Jan - 06 Feb	Icelandair
11 Jan - 18 Jan	Scandinavian Airlines
28 Jan - 04 Feb	Frontier Airlines
10 Jan - 17 Jan	Icelandair
13 Jan - 20 Jan	Icelandair
20 Jan - 26 Jan	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 359€

Return flights