AirHint found the following cheapest return flights from Washington (DCA) to London (LGW) in October 2025 (see full year).

Return flights

22 Oct - 29 Oct	jetBlue
08 Oct - 12 Oct	jetBlue
04 Oct - 09 Oct	jetBlue
06 Oct - 12 Oct	jetBlue
17 Oct - 19 Oct	jetBlue
16 Oct - 19 Oct	jetBlue
17 Oct - 20 Oct	jetBlue
13 Oct - 20 Oct	Iberia
06 Oct - 15 Oct	Iberia
08 Oct - 15 Oct	Iberia

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

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 October from 440€

Return flights