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

Return flights

23 Sep - 30 Sep	Iberia
15 Sep - 29 Sep	Air Canada
10 Sep - 16 Sep	Aer Lingus
02 Sep - 07 Sep	Aer Lingus
24 Sep - 29 Sep	Iberia
04 Sep - 19 Sep	Aer Lingus
03 Sep - 07 Sep	Aer Lingus
21 Sep - 27 Sep	Aer Lingus
01 Sep - 15 Sep	Scandinavian Airlines
25 Sep - 28 Sep	Scandinavian Airlines
11 Sep - 08 Oct	Iberia
19 Sep - 10 Oct	SWISS
29 Sep - 06 Oct	Turkish Airlines
29 Sep - 02 Oct	Turkish Airlines

Also check the deals for one-way flights from New York 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 New York to London in September from 434€

Return flights