Cheapest return flights from London to Washington in April from 639€

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

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

Return flights

23 Apr - 29 Apr SWISS
01 Apr - 08 Apr British Airways
28 Apr - 15 May SWISS
21 Apr - 28 Apr SWISS
22 Apr - 28 Apr SWISS
22 Apr - 06 May SWISS
23 Apr - 08 May SWISS
16 Apr - 29 Apr SWISS
28 Apr - 21 May Lufthansa
24 Apr - 30 Apr SWISS
23 Apr - 11 May SWISS
24 Apr - 06 May SWISS
30 Apr - 14 May SWISS
26 Apr - 07 May SWISS
23 Apr - 07 May Lufthansa
24 Apr - 07 May SWISS
14 Apr - 22 Apr ITA Airways
16 Apr - 28 Apr SWISS
16 Apr - 30 Apr SWISS
15 Apr - 29 Apr SWISS

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