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

Return flights

01 Dec - 06 Dec	TAP
06 Dec - 14 Dec	TAP
01 Dec - 12 Dec	TAP
02 Dec - 07 Dec	TAP
09 Dec - 14 Dec	TAP
01 Dec - 10 Dec	TAP
02 Dec - 11 Dec	TAP
01 Dec - 07 Dec	TAP
07 Dec - 12 Dec	TAP
01 Dec - 11 Dec	TAP
11 Dec - 15 Jan	TAP
10 Dec - 13 Jan	TAP
10 Dec - 13 Jan	Norse Atlantic Airways (UK)	direct
01 Dec - 09 Jan	TAP
10 Dec - 09 Jan	TAP
10 Dec - 12 Jan	TAP
10 Dec - 12 Jan	Norse Atlantic Airways (UK)	direct
10 Dec - 11 Jan	TAP
09 Dec - 08 Jan	TAP
11 Dec - 11 Jan	TAP

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 $362

Return flights