AirHint found the following cheapest return flights from New York (JFK) to London (LGW) in September 2025 (see full year).

Return flights

09 Sep - 25 Sep	Norse Atlantic Airways (UK)
24 Sep - 29 Sep	Norse Atlantic Airways (UK)	direct
28 Sep - 16 Oct	Iberia For Level
28 Sep - 01 Oct	Iberia For Level
07 Sep - 17 Sep	TAP
29 Sep - 08 Oct	Iberia For Level
08 Sep - 04 Oct	jetBlue
13 Sep - 20 Sep	jetBlue
01 Sep - 11 Sep	jetBlue
01 Sep - 19 Sep	jetBlue
04 Sep - 07 Sep	jetBlue
22 Sep - 29 Sep	TAP
02 Sep - 11 Sep	jetBlue
09 Sep - 18 Sep	jetBlue
27 Sep - 01 Oct	jetBlue
21 Sep - 01 Oct	jetBlue
24 Sep - 02 Oct	jetBlue
24 Sep - 01 Oct	jetBlue
27 Sep - 04 Oct	jetBlue
30 Sep - 07 Oct	Norse Atlantic Airways (UK)

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 361€

Return flights