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

Return flights

05 Jun - 12 Jun	jetBlue
28 Jun - 11 Jul	Air Canada
17 Jun - 21 Jun	jetBlue
18 Jun - 11 Jul	Air Canada
27 Jun - 04 Jul	Air Canada
19 Jun - 23 Jun	British Airways
27 Jun - 03 Jul	Iberia
12 Jun - 04 Jul	jetBlue

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 $998

Return flights