Cheapest return flights from London to Washington in April from $597

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

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

Return flights

20 Apr - 27 Apr Scandinavian Airlines
22 Apr - 29 Apr Scandinavian Airlines
21 Apr - 28 Apr Scandinavian Airlines
21 Apr - 28 Apr British Airways direct
20 Apr - 27 Apr British Airways direct
04 Apr - 18 Apr TAP
01 Apr - 08 Apr TAP
01 Apr - 08 Apr British Airways direct
04 Apr - 14 Apr British Airways

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