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

Return flights

23 Sep - 29 Sep	SWISS
09 Sep - 15 Sep	Lufthansa
08 Sep - 14 Sep	ITA Airways
07 Sep - 10 Sep	Lufthansa
08 Sep - 15 Sep	Lufthansa
09 Sep - 13 Sep	SWISS
28 Sep - 06 Oct	ITA Airways
08 Sep - 13 Sep	SWISS
24 Sep - 29 Sep	SWISS
24 Sep - 28 Sep	SWISS
02 Sep - 16 Sep	SWISS
28 Sep - 05 Oct	ITA Airways
15 Sep - 06 Oct	ITA Airways
21 Sep - 01 Oct	KLM
29 Sep - 08 Oct	ITA Airways
25 Sep - 04 Oct	Lufthansa
24 Sep - 01 Oct	SWISS
10 Sep - 08 Oct	KLM
30 Sep - 10 Oct	KLM
26 Sep - 06 Oct	KLM

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.

Book a cheap hotel in New York

Cheap car rent in New York

Cheapest return flights from London to New York in September from 510€

Return flights