Cheapest return flights from Washington to London in October from $519

Best time to book flights for Washington (IAD) to London (LGW) flights at AirHint

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

Return flights

14 Oct - 22 Oct Icelandair
15 Oct - 22 Oct Icelandair
15 Oct - 20 Oct Icelandair
14 Oct - 21 Oct Icelandair
14 Oct - 20 Oct Icelandair
07 Oct - 14 Oct Icelandair
05 Oct - 12 Oct Icelandair
29 Oct - 08 Nov Icelandair
12 Oct - 19 Oct Icelandair
28 Oct - 06 Nov Icelandair
10 Oct - 19 Oct Icelandair
01 Oct - 12 Oct Icelandair

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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