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

Return flights

30 Jan - 05 Feb	TAP
18 Jan - 29 Jan	TAP
30 Jan - 06 Feb	TAP
23 Jan - 29 Jan	TAP
16 Jan - 22 Jan	TAP
21 Jan - 25 Jan	TAP
23 Jan - 01 Feb	TAP
30 Jan - 07 Feb	TAP
25 Jan - 01 Feb	TAP
28 Jan - 04 Feb	TAP
28 Jan - 05 Feb	TAP
30 Jan - 04 Feb	Icelandair
08 Jan - 15 Jan	Icelandair
08 Jan - 12 Jan	Icelandair
10 Jan - 16 Jan	Icelandair
24 Jan - 11 Feb	Icelandair
31 Jan - 05 Feb	Icelandair
11 Jan - 18 Jan	Icelandair
09 Jan - 13 Jan	Icelandair
09 Jan - 12 Jan	Scandinavian Airlines

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 360€

Return flights