Cheapest return flights from Denver to London in April from $519

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

Return flights

13 Apr - 28 Apr Icelandair
21 Apr - 29 Apr Icelandair
28 Apr - 06 May Icelandair
30 Apr - 06 May Icelandair
02 Apr - 11 Apr Icelandair
28 Apr - 05 May Icelandair
02 Apr - 09 Apr Icelandair
14 Apr - 22 Apr Icelandair
14 Apr - 30 Apr Icelandair
14 Apr - 21 Apr Icelandair
16 Apr - 23 Apr Icelandair
22 Apr - 27 Apr Frontier Airlines
06 Apr - 09 Apr Icelandair
23 Apr - 04 May Frontier Airlines
29 Apr - 04 May Frontier Airlines
29 Apr - 06 May Air Canada
17 Apr - 02 May jetBlue
25 Apr - 02 May Icelandair
22 Apr - 06 May Lufthansa

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

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