Cheapest return flights from London to Washington in May from 506€

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

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

Return flights

03 May - 17 May Icelandair
01 May - 06 May Icelandair
03 May - 09 May Icelandair
13 May - 19 May Icelandair
14 May - 18 May Icelandair
01 May - 09 May Icelandair
16 May - 18 May Icelandair
08 May - 12 May Icelandair
06 May - 11 May Icelandair
03 May - 10 May British Airways
14 May - 04 Jun Scandinavian Airlines
28 May - 10 Jun Scandinavian Airlines
27 May - 02 Jun Scandinavian Airlines
20 May - 04 Jun Scandinavian Airlines
28 May - 04 Jun Scandinavian Airlines
26 May - 02 Jun Scandinavian Airlines
23 May - 06 Jun Scandinavian Airlines
14 May - 04 Jun Air France direct
25 May - 18 Jun Icelandair
25 May - 15 Jun Icelandair

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

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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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