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

Return flights

27 Aug - 04 Sep	Icelandair
20 Aug - 01 Sep	Icelandair
13 Aug - 26 Aug	Air Canada
22 Aug - 26 Aug	Icelandair
20 Aug - 06 Sep	Icelandair
18 Aug - 27 Aug	Icelandair
18 Aug - 25 Aug	Icelandair
27 Aug - 06 Sep	Icelandair
27 Aug - 13 Sep	Icelandair
27 Aug - 03 Sep	Icelandair
27 Aug - 09 Sep	Icelandair
22 Aug - 07 Sep	Icelandair
20 Aug - 28 Aug	Air Canada
27 Aug - 16 Sep	Icelandair
17 Aug - 29 Aug	Icelandair
21 Aug - 25 Aug	SWISS
14 Aug - 28 Aug	Scandinavian Airlines
13 Aug - 21 Aug	Icelandair
04 Aug - 21 Aug	Icelandair
17 Aug - 07 Sep	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 $494

Return flights