Cheapest one-way flights from Washington to London in April from $303

AirHint found the following cheapest one-way flights from Washington (IAD) to London (STN) in April 2026 (see full year).

One-Way flights

14 Apr Aer Lingus
03 Apr TAP
30 Apr Icelandair
29 Apr Icelandair
01 Apr Royal Air Maroc
02 Apr Lufthansa
09 Apr Scandinavian Airlines
17 Apr Royal Air Maroc

Also check the deals for return 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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