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

Return flights

31 Aug - 07 Sep	Aer Lingus
22 Aug - 26 Aug	Air Canada
04 Aug - 13 Aug	Icelandair
28 Aug - 01 Sep	Air Canada
24 Aug - 09 Sep	TAP
22 Aug - 25 Aug	Aer Lingus
13 Aug - 26 Aug	Air Canada
18 Aug - 07 Sep	TAP
27 Aug - 07 Sep	Aer Lingus
14 Aug - 13 Sep	Spirit Airlines
25 Aug - 03 Sep	Icelandair
04 Aug - 12 Sep	Icelandair
06 Aug - 21 Aug	Icelandair
29 Aug - 03 Sep	Icelandair
20 Aug - 30 Aug	Icelandair
18 Aug - 02 Sep	SWISS
06 Aug - 14 Aug	Icelandair
07 Aug - 26 Aug	Spirit Airlines
03 Aug - 07 Aug	Icelandair
10 Aug - 19 Aug	Icelandair

Also check the deals for one-way flights from Newark to London in August.

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 August from 349€

Return flights