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

Return flights

17 Sep - 22 Sep	TAP
18 Sep - 26 Sep	TAP
21 Sep - 27 Sep	TAP
17 Sep - 24 Sep	TAP
16 Sep - 23 Sep	TAP
14 Sep - 21 Sep	TAP
15 Sep - 30 Sep	TAP
21 Sep - 28 Sep	TAP
16 Sep - 30 Sep	TAP
21 Sep - 26 Sep	TAP
24 Sep - 01 Oct	TAP
12 Sep - 01 Oct	TAP
29 Sep - 02 Oct	TAP
27 Sep - 01 Oct	TAP
30 Sep - 05 Oct	Scandinavian Airlines
30 Sep - 04 Oct	Scandinavian Airlines
24 Sep - 04 Oct	SWISS
21 Sep - 04 Oct	Brussels Airlines
29 Sep - 03 Oct	Scandinavian Airlines
30 Sep - 03 Oct	Scandinavian Airlines

Also check the deals for one-way flights from London to New York 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 New York in September from $512

Return flights