Cheapest return flights from Washington to London in May from 611€

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

Return flights

12 May - 19 May TAP
04 May - 14 May Scandinavian Airlines
04 May - 16 May Icelandair
05 May - 18 May Icelandair
10 May - 16 May Icelandair
13 May - 26 May Icelandair
05 May - 12 May Icelandair
08 May - 11 May Icelandair
03 May - 10 May Icelandair
11 May - 18 May Icelandair
26 May - 09 Jun TAP
20 May - 17 Jun Frontier Airlines
13 May - 17 Jun Icelandair
05 May - 04 Jun Icelandair
25 May - 01 Jun Scandinavian Airlines
13 May - 17 Jun Air France direct
05 May - 04 Jun Air France direct
27 May - 10 Jun Scandinavian Airlines
14 May - 02 Jun TAP
20 May - 14 Jun Air Canada

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

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