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

Return flights

30 Dec - 11 Jan	Aer Lingus
31 Dec - 11 Jan	Aer Lingus
31 Dec - 12 Jan	Aer Lingus
12 Dec - 22 Jan	Iberia
07 Dec - 11 Dec	Iberia
12 Dec - 14 Dec	Air Canada
06 Dec - 11 Dec	Iberia
11 Dec - 14 Jan	Iberia
09 Dec - 12 Dec	Iberia
10 Dec - 12 Jan	Iberia
06 Dec - 12 Dec	SWISS
07 Dec - 14 Dec	Iberia
09 Dec - 14 Dec	Iberia
12 Dec - 11 Jan	Iberia
10 Dec - 14 Dec	Iberia
10 Dec - 13 Jan	Norse Atlantic Airways (UK)	direct
31 Dec - 25 Jan	Norse Atlantic Airways (UK)	direct
15 Dec - 26 Jan	Norse Atlantic Airways (UK)	direct
09 Dec - 11 Dec	Air Canada
08 Dec - 15 Dec	Iberia

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 379€

Return flights