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

Return flights

15 Dec - 18 Jan	Aer Lingus
16 Dec - 18 Jan	Aer Lingus
09 Dec - 15 Dec	TAP
11 Dec - 15 Dec	TAP
15 Dec - 08 Jan	Aer Lingus
07 Dec - 13 Dec	Aer Lingus
05 Dec - 12 Dec	Aer Lingus
06 Dec - 14 Dec	Aer Lingus
06 Dec - 12 Dec	Aer Lingus
07 Dec - 12 Dec	Aer Lingus
06 Dec - 09 Dec	Air Canada
12 Dec - 14 Dec	Aer Lingus
14 Dec - 18 Jan	Aer Lingus
15 Dec - 29 Dec	Aer Lingus
15 Dec - 06 Jan	Aer Lingus
13 Dec - 08 Jan	Aer Lingus
10 Dec - 12 Jan	Iberia For Level
11 Dec - 06 Jan	Aer Lingus
16 Dec - 10 Jan	TAP
29 Dec - 24 Jan	Aer Lingus

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.

Book a cheap hotel in New York

Cheap car rent in New York

Cheapest return flights from London to New York in December from $441

Return flights