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

Return flights

06 Feb - 15 Feb	TAP
06 Feb - 08 Feb	TAP
06 Feb - 09 Feb	TAP
18 Feb - 25 Feb	TAP
09 Feb - 16 Feb	TAP
11 Feb - 07 Mar	Icelandair
01 Feb - 21 Feb	Icelandair
06 Feb - 28 Feb	Icelandair
08 Feb - 28 Feb	Icelandair
27 Feb - 06 Mar	Icelandair
15 Feb - 07 Mar	Icelandair
10 Feb - 07 Mar	Icelandair
13 Feb - 07 Mar	Icelandair
11 Feb - 17 Feb	Icelandair
01 Feb - 06 Feb	Icelandair
28 Feb - 07 Mar	Icelandair
28 Feb - 04 Mar	Icelandair
28 Feb - 05 Mar	Icelandair
27 Feb - 04 Mar	Icelandair
28 Feb - 06 Mar	Icelandair

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

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 February from $422

Return flights