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

Return flights

02 Dec - 08 Dec	TAP
03 Dec - 08 Dec	TAP
01 Dec - 15 Dec	TAP
12 Dec - 14 Dec	TAP
05 Dec - 10 Dec	TAP
01 Dec - 05 Dec	Icelandair
05 Dec - 13 Dec	Icelandair
13 Dec - 16 Dec	Aer Lingus
01 Dec - 04 Dec	Icelandair
04 Dec - 07 Dec	TAP
15 Dec - 09 Jan	TAP
29 Dec - 12 Jan	Icelandair
30 Dec - 13 Jan	Icelandair
06 Dec - 17 Jan	Icelandair
31 Dec - 21 Jan	TAP
23 Dec - 23 Jan	TAP
16 Dec - 04 Jan	Icelandair
24 Dec - 06 Jan	TAP
29 Dec - 05 Jan	Icelandair
12 Dec - 01 Jan	Icelandair

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 315€

Return flights