Cheapest return flights from London to Newark in September from $421

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

Return flights

18 Sep - 28 Sep Scandinavian Airlines
25 Sep - 28 Sep Scandinavian Airlines
17 Sep - 28 Sep Scandinavian Airlines
17 Sep - 03 Oct Scandinavian Airlines
18 Sep - 22 Sep Scandinavian Airlines
18 Sep - 21 Sep Scandinavian Airlines
14 Sep - 21 Sep Aer Lingus
11 Sep - 21 Sep Aer Lingus
10 Sep - 21 Sep Scandinavian Airlines
03 Sep - 12 Sep Scandinavian Airlines
20 Sep - 27 Sep Aer Lingus
27 Sep - 11 Oct Aer Lingus
20 Sep - 10 Oct Aer Lingus
27 Sep - 03 Oct Aer Lingus
25 Sep - 03 Oct Aer Lingus
20 Sep - 04 Oct Aer Lingus
18 Sep - 04 Oct Aer Lingus
17 Sep - 11 Oct SWISS
26 Sep - 03 Oct Aer Lingus
14 Sep - 22 Oct SWISS

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

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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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