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

Return flights

23 Jan - 31 Jan	Scandinavian Airlines
14 Jan - 25 Jan	Scandinavian Airlines
11 Jan - 02 Feb	Scandinavian Airlines
12 Jan - 25 Jan	Scandinavian Airlines
07 Jan - 12 Jan	Scandinavian Airlines
08 Jan - 15 Jan	Icelandair
18 Jan - 25 Jan	Icelandair
28 Jan - 04 Feb	Icelandair
14 Jan - 22 Jan	Icelandair
13 Jan - 09 Feb	Iberia
21 Jan - 28 Jan	Delta
14 Jan - 21 Jan	Delta
13 Jan - 20 Jan	Delta
29 Jan - 05 Feb	Delta
30 Jan - 06 Feb	Delta
13 Jan - 09 Feb	British Airways	direct
11 Jan - 02 Feb	British Airways	direct
30 Jan - 02 Feb	Delta
31 Jan - 07 Feb	Delta
29 Jan - 01 Feb	Delta

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 355€

Return flights