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

Return flights

05 Nov - 12 Nov	Air Canada
12 Nov - 20 Nov	Air France
19 Nov - 27 Nov	Air France
21 Nov - 27 Nov	Air Canada
05 Nov - 19 Nov	British Airways
12 Nov - 26 Nov	British Airways
17 Nov - 03 Dec	British Airways
19 Nov - 10 Dec	British Airways
17 Nov - 26 Nov	British Airways
09 Nov - 17 Nov	British Airways
07 Nov - 16 Nov	Air Canada
22 Nov - 30 Nov	Air Canada
19 Nov - 03 Dec	jetBlue
18 Nov - 09 Dec	jetBlue
25 Nov - 16 Dec	jetBlue
26 Nov - 17 Dec	British Airways
11 Nov - 02 Dec	jetBlue

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 $517

Return flights