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

Return flights

01 Feb - 08 Feb	Icelandair
11 Feb - 16 Feb	Icelandair
11 Feb - 18 Feb	Icelandair
27 Feb - 05 Mar	Icelandair
09 Feb - 16 Feb	Icelandair
28 Feb - 07 Mar	Icelandair
15 Feb - 22 Feb	Icelandair
02 Feb - 18 Feb	Icelandair
18 Feb - 25 Feb	Icelandair
08 Feb - 18 Feb	Icelandair
07 Feb - 20 Feb	Lufthansa
06 Feb - 13 Feb	Lufthansa
25 Feb - 03 Mar	Air Canada
25 Feb - 03 Mar	American Airlines	direct
28 Feb - 07 Mar	Finnair	direct

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

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 February from $491

Return flights