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

Return flights

04 Feb - 27 Feb	TAP
16 Feb - 25 Feb	TAP
03 Feb - 11 Feb	TAP
18 Feb - 25 Feb	TAP
04 Feb - 11 Feb	TAP
01 Feb - 07 Feb	TAP
03 Feb - 25 Feb	TAP
04 Feb - 08 Feb	TAP
01 Feb - 08 Feb	TAP
16 Feb - 04 Mar	TAP
15 Feb - 02 Mar	TAP
04 Feb - 04 Mar	TAP
24 Feb - 03 Mar	TAP
03 Feb - 07 Feb	TAP
18 Feb - 08 Mar	TAP
14 Feb - 31 Mar	Icelandair
15 Feb - 31 Mar	Icelandair
23 Feb - 02 Mar	Icelandair
25 Feb - 01 Mar	Icelandair
26 Feb - 05 Mar	TAP

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 $417

Return flights