AirHint found the following cheapest return flights from London (LHR) to Newark (EWR) in September 2026 (see full year).

Return flights

30 Sep - 05 Oct	Icelandair
17 Sep - 01 Oct	Icelandair
25 Sep - 30 Sep	Icelandair
29 Sep - 05 Oct	Icelandair
24 Sep - 01 Oct	Icelandair
30 Sep - 06 Oct	Icelandair
23 Sep - 30 Sep	Icelandair
29 Sep - 06 Oct	Icelandair
10 Sep - 06 Oct	Icelandair
26 Sep - 30 Sep	Icelandair
18 Sep - 05 Oct	Icelandair
01 Sep - 22 Sep	Icelandair
08 Sep - 22 Sep	Icelandair
10 Sep - 24 Sep	Icelandair
11 Sep - 24 Sep	Icelandair
26 Sep - 13 Oct	Icelandair
02 Sep - 14 Sep	Icelandair
23 Sep - 28 Sep	Icelandair
17 Sep - 23 Sep	Icelandair
30 Sep - 15 Oct	Icelandair

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

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 London to Newark in September from 390€

Return flights