Cheapest return flights from Washington to London in May from 460€

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

Return flights

06 May - 13 May Icelandair
07 May - 15 May Icelandair
05 May - 12 May Icelandair
07 May - 12 May Icelandair
12 May - 27 May Icelandair
09 May - 17 May Icelandair
21 May - 26 May Icelandair
31 May - 13 Jun Icelandair
25 May - 10 Jun TAP
29 May - 13 Jun Icelandair
22 May - 31 May Icelandair
01 May - 09 May TAP
29 May - 06 Jun Icelandair
22 May - 25 May Icelandair

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