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

Return flights

27 Nov - 09 Dec	Icelandair
24 Nov - 11 Dec	Icelandair
18 Nov - 26 Nov	SWISS
19 Nov - 26 Nov	Air Canada
29 Nov - 04 Dec	Icelandair
30 Nov - 05 Dec	Icelandair
23 Nov - 25 Nov	Aer Lingus
18 Nov - 02 Dec	Aer Lingus
18 Nov - 03 Dec	TAP
19 Nov - 25 Nov	Aer Lingus
23 Nov - 06 Dec	Aer Lingus
26 Nov - 03 Dec	Air Canada
23 Nov - 02 Dec	Lufthansa
29 Nov - 06 Dec	SWISS
18 Nov - 22 Nov	Air Canada
19 Nov - 23 Nov	TAP
21 Nov - 27 Nov	Allegiant Air
27 Nov - 30 Nov	Frontier Airlines
23 Nov - 30 Nov	Southern Airways Express
24 Nov - 29 Nov	Frontier Airlines

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 $506

Return flights