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

Return flights

16 Dec - 16 Jan	ITA Airways
24 Dec - 21 Jan	ITA Airways
16 Dec - 17 Jan	ITA Airways
24 Dec - 31 Jan	ITA Airways
24 Dec - 30 Jan	ITA Airways
16 Dec - 19 Jan	ITA Airways
30 Dec - 20 Jan	Iberia
16 Dec - 13 Jan	ITA Airways
30 Dec - 13 Jan	Iberia
29 Dec - 15 Jan	SWISS
16 Dec - 28 Dec	ITA Airways
16 Dec - 31 Dec	ITA Airways
24 Dec - 28 Dec	ITA Airways
15 Dec - 29 Dec	ITA Airways
17 Dec - 28 Dec	ITA Airways
16 Dec - 30 Dec	ITA Airways
23 Dec - 29 Dec	SWISS
15 Dec - 31 Dec	ITA Airways
24 Dec - 29 Dec	Delta
16 Dec - 26 Dec	ITA Airways

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 $585

Return flights