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

Return flights

11 Dec - 14 Dec	Icelandair
03 Dec - 07 Dec	Icelandair
10 Dec - 14 Dec	Icelandair
02 Dec - 14 Dec	Icelandair
09 Dec - 14 Dec	Icelandair
02 Dec - 07 Dec	Icelandair
03 Dec - 09 Dec	Icelandair
03 Dec - 10 Dec	Icelandair
10 Dec - 08 Jan	Icelandair
02 Dec - 09 Dec	Icelandair
02 Dec - 10 Dec	Icelandair
12 Dec - 25 Jan	Lufthansa
16 Dec - 14 Jan	Lufthansa
25 Dec - 08 Jan	Virgin Atlantic
11 Dec - 11 Jan	Aer Lingus
31 Dec - 07 Jan	Virgin Atlantic
01 Dec - 07 Jan	SWISS
08 Dec - 10 Jan	Virgin Atlantic
26 Dec - 14 Jan	Virgin Atlantic
16 Dec - 08 Jan	Virgin Atlantic

Also check the deals for one-way flights from London to New York 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 London to New York in December from 340€

Return flights