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

Return flights

02 Dec - 07 Dec	TAP
06 Dec - 12 Dec	TAP
03 Dec - 14 Dec	TAP
11 Dec - 14 Dec	TAP
03 Dec - 10 Dec	TAP
07 Dec - 12 Dec	TAP
01 Dec - 10 Dec	TAP
05 Dec - 08 Dec	Aer Lingus
11 Dec - 14 Jan	TAP
05 Dec - 12 Dec	TAP
05 Dec - 09 Dec	TAP
15 Dec - 20 Jan	TAP
07 Dec - 11 Jan	TAP
12 Dec - 19 Jan	TAP
09 Dec - 08 Jan	TAP
12 Dec - 16 Jan	TAP
14 Dec - 14 Jan	TAP
01 Dec - 09 Jan	TAP
11 Dec - 09 Jan	TAP
05 Dec - 10 Jan	FrenchBee

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 314€

Return flights