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

Return flights

24 Jun - 28 Jun	jetBlue
05 Jun - 09 Jun	jetBlue
20 Jun - 28 Jun	jetBlue
15 Jun - 11 Jul	jetBlue
18 Jun - 11 Jul	jetBlue
30 Jun - 10 Jul	jetBlue
21 Jun - 11 Jul	jetBlue
02 Jun - 27 Jun	Air Canada
17 Jun - 01 Jul	Icelandair
14 Jun - 24 Jun	Icelandair
26 Jun - 18 Jul	Porter Airlines (Canada) Ltd
24 Jun - 10 Jul	Icelandair

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

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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Cheapest return flights from Washington to London in June from $789

Return flights