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

Return flights

27 Nov - 11 Dec	Icelandair
27 Nov - 05 Dec	Icelandair
28 Nov - 03 Dec	Aer Lingus
30 Nov - 05 Dec	Icelandair
18 Nov - 24 Nov	SWISS
25 Nov - 07 Dec	TAP
27 Nov - 07 Dec	Frontier Airlines
23 Nov - 13 Dec	Allegiant Air
18 Nov - 26 Nov	Icelandair
27 Nov - 02 Dec	Icelandair
19 Nov - 24 Nov	TAP
26 Nov - 02 Dec	Air France
28 Nov - 01 Dec	Aer Lingus
19 Nov - 27 Nov	Aer Lingus
21 Nov - 27 Nov	Southern Airways Express
21 Nov - 24 Nov	Southern Airways Express
18 Nov - 23 Nov	TAP
17 Nov - 21 Nov	TAP
22 Nov - 26 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 429€

Return flights