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

Return flights

25 Jan - 01 Feb	Icelandair
19 Jan - 29 Jan	Icelandair
14 Jan - 22 Jan	Icelandair
14 Jan - 07 Feb	Icelandair
06 Jan - 13 Jan	Icelandair
04 Jan - 24 Jan	Icelandair
22 Jan - 28 Jan	British Airways
29 Jan - 04 Feb	British Airways
29 Jan - 21 Feb	British Airways
30 Jan - 21 Feb	British Airways
14 Jan - 21 Jan	Hawaiian Airlines
07 Jan - 14 Jan	Hawaiian Airlines

Also check the deals for one-way flights from Denver 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 Denver to London in January from 428€

Return flights