Cheapest one-way flights from Washington to London in January from $219

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

AirHint found the following cheapest one-way flights from Washington (IAD) to London (LHR) in January 2025 (see full year).

One-Way flights

30 Jan Icelandair
15 Jan Icelandair
27 Jan Icelandair
21 Jan Icelandair
22 Jan Icelandair
20 Jan Icelandair
23 Jan Icelandair
29 Jan Icelandair
31 Jan Icelandair
25 Jan Icelandair

Also check the deals for return flights from Washington to London in January.

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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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