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

Return flights

06 Dec - 13 Dec	Lufthansa
03 Dec - 07 Dec	Lufthansa
31 Dec - 11 Jan	Lufthansa
09 Dec - 13 Dec	Lufthansa
10 Dec - 16 Jan	Air Canada
03 Dec - 13 Dec	Lufthansa
08 Dec - 17 Jan	Lufthansa
08 Dec - 18 Jan	Lufthansa
05 Dec - 08 Dec	Lufthansa
09 Dec - 17 Jan	Lufthansa
06 Dec - 12 Jan	Lufthansa
01 Dec - 07 Dec	Lufthansa
08 Dec - 13 Dec	Lufthansa
03 Dec - 08 Dec	Air Canada
11 Dec - 13 Jan	Air Canada
11 Dec - 12 Jan	Air Canada
01 Dec - 09 Dec	Air Canada
08 Dec - 12 Dec	Air Canada
11 Dec - 14 Jan	Lufthansa
11 Dec - 09 Jan	Air Canada

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 407€

Return flights