Cheapest return flights from Denver to London in January from $475

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

Return flights

23 Jan - 26 Jan Icelandair
25 Jan - 01 Feb Icelandair
23 Jan - 30 Jan Frontier Airlines
23 Jan - 25 Jan Icelandair
28 Jan - 02 Feb Frontier Airlines
11 Jan - 17 Jan Icelandair
28 Jan - 04 Feb Frontier Airlines
25 Jan - 28 Jan Icelandair
06 Jan - 13 Jan Icelandair
14 Jan - 19 Jan Air Canada
16 Jan - 19 Jan Frontier Airlines
15 Jan - 19 Jan Frontier Airlines
11 Jan - 16 Jan Icelandair
26 Jan - 04 Feb TAP

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

Powered by

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.

Book a cheap hotel in London

Cheap car rent in London

Feel free to contact us with any feedback or request another flight research.