Cheapest return flights from Washington to London in April from $487

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

Return flights

11 Apr - 18 Apr Icelandair
11 Apr - 17 Apr Icelandair
05 Apr - 11 Apr Icelandair
06 Apr - 11 Apr Icelandair
24 Apr - 03 May Icelandair
16 Apr - 23 Apr Icelandair
10 Apr - 18 Apr Icelandair
21 Apr - 29 Apr Icelandair
16 Apr - 21 Apr Icelandair
27 Apr - 03 May Icelandair
25 Apr - 17 May Icelandair
01 Apr - 25 Apr Icelandair
04 Apr - 11 Apr Icelandair

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

Skyscanner

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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