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

Return flights

09 Dec - 18 Jan	TAP
09 Dec - 20 Jan	TAP
09 Dec - 14 Jan	TAP
10 Dec - 13 Jan	TAP
09 Dec - 09 Jan	TAP
10 Dec - 26 Jan	TAP
10 Dec - 14 Jan	TAP
10 Dec - 10 Jan	TAP
09 Dec - 27 Jan	TAP
11 Dec - 22 Jan	TAP
02 Dec - 11 Dec	Vueling Airlines
04 Dec - 10 Dec	Vueling Airlines
02 Dec - 08 Dec	Austrian Airlines
02 Dec - 09 Dec	Vueling Airlines
08 Dec - 11 Dec	Vueling Airlines
08 Dec - 10 Dec	Vueling Airlines
09 Dec - 11 Dec	British Airways
10 Dec - 11 Dec	TAP
09 Dec - 10 Dec	TAP
03 Dec - 10 Dec	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 393€

Return flights