Cheapest return flights from Washington to London in October from $578

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

Return flights

15 Oct - 21 Oct Icelandair
16 Oct - 21 Oct Icelandair
15 Oct - 22 Oct Turkish Airlines
15 Oct - 25 Oct TAP
25 Oct - 31 Oct Royal Air Maroc

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

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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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