Cheapest return flights from New York to London in September from $773

Best time to book flights for New York (LGA) to London (LGW) flights at AirHint

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

Return flights

11 Sep - 17 Sep Air Transat
09 Sep - 19 Sep Air Transat
09 Sep - 18 Sep Air Transat
16 Sep - 23 Sep Air Transat
08 Sep - 22 Sep Air Transat
18 Sep - 29 Sep Air Transat
18 Sep - 01 Oct Air Transat
17 Sep - 23 Sep Air Transat
16 Sep - 21 Sep Air Transat
17 Sep - 20 Sep Air Canada
04 Sep - 08 Sep Air Transat
24 Sep - 31 Oct Spirit Airlines
26 Sep - 03 Oct Air Transat
29 Sep - 14 Oct Air Transat
29 Sep - 13 Oct Air Transat
25 Sep - 12 Oct Air Transat
26 Sep - 05 Oct Air Transat
27 Sep - 11 Oct Spirit Airlines

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

Skyscanner

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 London

Cheap car rent in London