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

Return flights

31 Dec - 12 Jan	Aer Lingus
07 Dec - 14 Dec	TAP
07 Dec - 10 Dec	SWISS
09 Dec - 20 Jan	Icelandair
08 Dec - 11 Dec	Air Canada
07 Dec - 11 Dec	Air Canada
09 Dec - 12 Dec	SWISS
23 Dec - 10 Jan	Air Canada
10 Dec - 13 Jan	Icelandair
07 Dec - 25 Dec	TAP
15 Dec - 26 Jan	Spirit Airlines
08 Dec - 15 Dec	TAP
14 Dec - 25 Dec	SWISS
30 Dec - 12 Jan	SWISS
09 Dec - 14 Dec	Icelandair
31 Dec - 11 Jan	SWISS
13 Dec - 12 Jan	Spirit Airlines
08 Dec - 10 Dec	Air Canada
15 Dec - 11 Jan	Spirit Airlines
12 Dec - 11 Jan	Spirit Airlines

Also check the deals for one-way flights from Newark 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 Newark to London in December from 386€

Return flights