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

Return flights

10 Nov - 06 Dec	Icelandair
17 Nov - 13 Dec	Icelandair
05 Nov - 18 Nov	Icelandair
29 Nov - 06 Dec	Icelandair
16 Nov - 23 Nov	Icelandair
15 Nov - 23 Nov	Icelandair
18 Nov - 26 Nov	Icelandair
13 Nov - 17 Nov	Icelandair
05 Nov - 25 Nov	Icelandair
08 Nov - 25 Nov	Icelandair
09 Nov - 25 Nov	Icelandair
05 Nov - 12 Nov	Icelandair
28 Nov - 04 Dec	Icelandair
27 Nov - 01 Dec	Icelandair
19 Nov - 26 Nov	Icelandair
27 Nov - 04 Dec	Icelandair
25 Nov - 03 Dec	Icelandair
24 Nov - 03 Dec	Icelandair
25 Nov - 02 Dec	Icelandair
26 Nov - 01 Dec	Icelandair

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

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 November from $491

Return flights