Cheapest return flights from Washington to London in April from $524

Best time to book flights for Washington (IAD) to London (LGW) flights at AirHint

AirHint found the following cheapest return flights from Washington (IAD) to London (LGW) in April 2025 (see full year).

Return flights

29 Apr - 07 May Icelandair
27 Apr - 02 May Icelandair
28 Apr - 06 May Icelandair
27 Apr - 06 May Icelandair
06 Apr - 22 Apr Frontier Airlines
26 Apr - 06 May Icelandair
29 Apr - 20 May Icelandair
24 Apr - 15 May Icelandair
24 Apr - 29 Apr Icelandair
08 Apr - 22 Apr SWISS
30 Apr - 07 May SWISS
29 Apr - 05 May Icelandair
24 Apr - 02 May Icelandair
08 Apr - 15 Apr SWISS
22 Apr - 27 Apr Icelandair
23 Apr - 30 Apr Icelandair
08 Apr - 17 Apr Frontier Airlines
18 Apr - 25 Apr Icelandair
25 Apr - 30 Apr SWISS
06 Apr - 09 Apr TAP

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

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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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