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

Return flights

07 Sep - 14 Sep	Lufthansa
01 Sep - 15 Sep	Lufthansa
22 Sep - 29 Sep	Lufthansa
07 Sep - 17 Sep	Lufthansa
16 Sep - 23 Sep	Lufthansa
30 Sep - 05 Oct	Lufthansa
07 Sep - 10 Sep	Lufthansa
08 Sep - 22 Sep	Lufthansa
14 Sep - 17 Sep	Lufthansa
02 Sep - 09 Sep	Lufthansa
22 Sep - 28 Sep	Lufthansa
28 Sep - 05 Oct	Lufthansa
28 Sep - 01 Oct	KLM
30 Sep - 04 Oct	Lufthansa
29 Sep - 04 Oct	Lufthansa
22 Sep - 01 Oct	KLM
24 Sep - 08 Oct	KLM
25 Sep - 05 Oct	KLM
25 Sep - 04 Oct	Lufthansa
07 Sep - 01 Oct	SWISS

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 511€

Return flights