AirHint found the following cheapest one-way flights from New York (NYC) to London (LHR) in December 2025 (see full year).

One-Way flights

05 Dec	Iberia For Level
04 Dec	Air Canada
08 Dec	Air Canada
01 Dec	Iberia	direct
06 Dec	United	direct
03 Dec	Iberia For Level
12 Dec	British Airways	direct
07 Dec	British Airways	direct
09 Dec	British Airways	direct
30 Dec	British Airways	direct

Also check the deals for return 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 one-way flights from New York to London in December from $211

One-Way flights