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

Return flights

23 Jan - 01 Feb	Icelandair
23 Jan - 30 Jan	Icelandair
12 Jan - 17 Jan	Icelandair
11 Jan - 15 Jan	Icelandair
11 Jan - 17 Jan	Icelandair
11 Jan - 27 Jan	Icelandair
11 Jan - 20 Jan	Icelandair
12 Jan - 18 Jan	Air Canada
10 Jan - 17 Jan	Air Canada
10 Jan - 18 Jan	Air Canada
09 Jan - 17 Jan	Icelandair
18 Jan - 15 Feb	Icelandair
27 Jan - 03 Feb	Volaris

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 $477

Return flights