Cheapest return flights from Washington to London in May from 503€

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

Return flights

14 May - 21 May Icelandair
02 May - 16 May Icelandair
01 May - 15 May Icelandair
01 May - 15 May British Airways direct
02 May - 16 May British Airways direct
29 May - 12 Jun Icelandair
30 May - 11 Jun Icelandair

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

Skyscanner

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.

Book a cheap hotel in London

Cheap car rent in London

Feel free to contact us with any feedback or request another flight research.