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

Return flights

04 Aug - 11 Sep	TAP
24 Aug - 26 Aug	United
26 Aug - 28 Aug	SWISS
31 Aug - 02 Sep	Air Canada
18 Aug - 20 Aug	SWISS
11 Aug - 20 Aug	TAP
26 Aug - 29 Aug	Icelandair
10 Aug - 15 Aug	TAP
13 Aug - 20 Aug	Icelandair
26 Aug - 03 Sep	Icelandair
09 Aug - 13 Aug	Air Canada
22 Aug - 05 Sep	Air Canada
18 Aug - 24 Aug	TAP
10 Aug - 24 Aug	Icelandair
26 Aug - 04 Sep	Air Canada
27 Aug - 08 Sep	Air Canada
20 Aug - 04 Sep	Air Canada
10 Aug - 03 Sep	TAP
02 Aug - 04 Sep	Air Canada
21 Aug - 04 Sep	Air Canada

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 $360

Return flights