Cheapest return flights from Washington to London in May from 552€

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

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

Return flights

04 May - 12 May Scandinavian Airlines
14 May - 19 May Scandinavian Airlines
07 May - 12 May Scandinavian Airlines
05 May - 13 May Scandinavian Airlines
01 May - 07 May Icelandair
03 May - 07 May Icelandair
03 May - 10 May Icelandair
01 May - 11 May Icelandair
03 May - 11 May Icelandair
11 May - 17 May Icelandair
07 May - 02 Jun Icelandair
15 May - 15 Jun Icelandair
14 May - 02 Jun Icelandair
29 May - 15 Jun Icelandair
18 May - 07 Jun United
07 May - 02 Jun Finnair direct
14 May - 02 Jun Delta direct
18 May - 07 Jun Delta direct
30 May - 15 Jun Icelandair
25 May - 17 Jun 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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