Cheapest return flights from Washington to London in October from $599

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

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

Return flights

08 Oct - 15 Oct Aer Lingus
10 Oct - 14 Oct Icelandair
01 Oct - 08 Oct Icelandair
17 Oct - 20 Oct Icelandair
22 Oct - 26 Oct Icelandair
08 Oct - 12 Oct TAP
24 Oct - 28 Oct Icelandair
10 Oct - 12 Oct Icelandair
28 Oct - 06 Nov Air France

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

Skyscanner

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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