Cheapest return flights from Washington to London in December from $898

AirHint found the following cheapest return flights from Washington (DCA) to London (LGW) in December 2026 (see full year).

Return flights

09 Dec - 16 Dec Iberia
24 Dec - 07 Jan TAP
22 Dec - 09 Jan TAP

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

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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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