Cheapest return flights from Washington to London in May from 442€

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

Return flights

03 May - 16 May Icelandair
04 May - 11 May Icelandair
07 May - 11 May Icelandair
01 May - 11 May Icelandair
13 May - 20 May Icelandair
15 May - 18 May Icelandair
08 May - 15 May Icelandair
06 May - 12 May Icelandair
05 May - 12 May Icelandair
20 May - 19 Jun Icelandair
17 May - 30 May Icelandair
25 May - 01 Jun Scandinavian Airlines
27 May - 03 Jun Icelandair
17 May - 13 Jun Aer Lingus
28 May - 04 Jun Icelandair
17 May - 13 Jun Air France direct
30 May - 07 Jun Icelandair
20 May - 25 Jun Delta
27 May - 03 Jun Lufthansa direct
29 May - 02 Jun Scandinavian Airlines

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

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