AirHint found the following cheapest return flights from New York (LGA) to London (LGW) in December 2025 (see full year).

Return flights

09 Dec - 16 Dec	Air Transat
12 Dec - 14 Dec	Air Transat
01 Dec - 08 Dec	Air Transat
03 Dec - 10 Dec	Air Transat
06 Dec - 14 Dec	Air Transat
04 Dec - 11 Dec	Air Transat
01 Dec - 04 Dec	Air Transat
01 Dec - 11 Dec	Air Transat
02 Dec - 08 Dec	Air Transat
11 Dec - 09 Jan	Air Transat
08 Dec - 11 Dec	Air Transat
24 Dec - 11 Jan	Air Transat
24 Dec - 07 Jan	Air Transat
19 Dec - 18 Jan	Air Transat
18 Dec - 08 Jan	Air Transat
23 Dec - 07 Jan	Air Transat
22 Dec - 07 Jan	Air Transat
19 Dec - 09 Jan	Air Transat
19 Dec - 19 Jan	Air Transat
12 Dec - 04 Jan	Air Transat

Also check the deals for one-way flights from New York 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 New York to London in December from $706

Return flights