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

Return flights

11 Dec - 16 Dec	TAP
01 Dec - 09 Dec	TAP
13 Dec - 18 Dec	Icelandair
11 Dec - 09 Jan	TAP
05 Dec - 15 Dec	Aer Lingus
04 Dec - 09 Dec	Aer Lingus
11 Dec - 18 Dec	Icelandair
01 Dec - 06 Dec	Icelandair
31 Dec - 07 Jan	Icelandair
16 Dec - 23 Dec	Icelandair
30 Dec - 07 Jan	Icelandair
14 Dec - 01 Jan	Icelandair
05 Dec - 14 Dec	Aer Lingus
04 Dec - 14 Dec	Aer Lingus
17 Dec - 30 Jan	Icelandair
31 Dec - 18 Jan	Icelandair
30 Dec - 10 Jan	Icelandair
31 Dec - 24 Jan	Icelandair
15 Dec - 01 Jan	Icelandair
30 Dec - 04 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 366€

Return flights