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

Return flights

24 Sep - 29 Sep	British Airways
11 Sep - 27 Sep	Air France
01 Sep - 30 Sep	TAP
22 Sep - 08 Oct	TAP
04 Sep - 07 Sep	TAP
23 Sep - 07 Oct	Icelandair
10 Sep - 16 Sep	TAP
07 Sep - 19 Sep	TAP
13 Sep - 19 Sep	TAP
25 Sep - 04 Oct	TAP
04 Sep - 12 Sep	TAP
17 Sep - 25 Sep	Iberia
03 Sep - 08 Sep	Icelandair

Also check the deals for one-way flights from Newark to London 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 Newark to London in September from 457€

Return flights