AirHint found the following cheapest return flights from London (LCY) to New York (JFK) in December 2026 (see full year).

Return flights

08 Dec - 15 Dec	KLM
01 Dec - 05 Dec	British Airways
05 Dec - 09 Dec	SWISS
03 Dec - 08 Dec	SWISS
02 Dec - 08 Dec	SWISS
14 Dec - 20 Dec	KLM
02 Dec - 07 Dec	SWISS
05 Dec - 10 Dec	SWISS
04 Dec - 10 Dec	SWISS
10 Dec - 13 Dec	Iberia
30 Dec - 06 Jan	Iberia
30 Dec - 03 Jan	SWISS
30 Dec - 04 Jan	SWISS
31 Dec - 16 Jan	SWISS
29 Dec - 05 Jan	SWISS
29 Dec - 03 Jan	SWISS
29 Dec - 04 Jan	SWISS
31 Dec - 05 Jan	Iberia
17 Dec - 04 Jan	Iberia
25 Dec - 01 Jan	SWISS

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 448€

Return flights