Cheapest return flights from Denver to London in April from $492

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

Return flights

23 Apr - 30 Apr Icelandair
30 Apr - 12 May Icelandair
20 Apr - 16 May Icelandair
06 Apr - 30 Apr Icelandair
16 Apr - 25 Apr Icelandair
16 Apr - 23 Apr Icelandair
17 Apr - 26 Apr Icelandair
15 Apr - 17 Apr Air Canada
20 Apr - 27 Apr Icelandair
16 Apr - 24 Apr Icelandair
14 Apr - 24 Apr Icelandair
14 Apr - 24 Apr Iberia direct
22 Apr - 06 May British Airways direct
08 Apr - 06 May Iberia
15 Apr - 09 May British Airways direct
30 Apr - 12 May American Airlines direct
20 Apr - 16 May British Airways direct
08 Apr - 06 May Austrian Airlines direct

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

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