AirHint found the following cheapest return flights from Windsor Locks (BDL) to London (LGW) in December 2025 (see full year).

Return flights

08 Dec - 15 Dec	Iberia
23 Dec - 20 Jan	Frontier Airlines
07 Dec - 14 Dec	Frontier Airlines
21 Dec - 01 Jan	Frontier Airlines
22 Dec - 01 Jan	Breeze Airways
20 Dec - 01 Jan	Breeze Airways
23 Dec - 30 Dec	Aer Lingus
19 Dec - 28 Dec	Breeze Airways
19 Dec - 26 Dec	Breeze Airways
22 Dec - 02 Jan	Breeze Airways

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

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 Windsor Locks to London in December from $855

Return flights