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

Return flights

22 Oct - 31 Oct	jetBlue
21 Oct - 31 Oct	jetBlue
22 Oct - 29 Oct	jetBlue
12 Oct - 21 Oct	American Airlines
01 Oct - 15 Oct	British Airways
23 Oct - 06 Nov	jetBlue
16 Oct - 21 Oct	jetBlue
28 Oct - 10 Nov	jetBlue
13 Oct - 22 Oct	jetBlue
01 Oct - 08 Oct	jetBlue
21 Oct - 30 Oct	jetBlue
29 Oct - 04 Nov	jetBlue
24 Oct - 03 Nov	jetBlue
25 Oct - 02 Nov	jetBlue
16 Oct - 22 Oct	jetBlue
29 Oct - 02 Nov	Air Canada
05 Oct - 01 Nov	British Airways
28 Oct - 01 Nov	Icelandair
24 Oct - 01 Nov	Iberia
31 Oct - 05 Nov	Icelandair

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 $504

Return flights