Cheapest one-way flights from New York to London in September from $189

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

One-Way flights

29 Sep Frontier Airlines
17 Sep Frontier Airlines
22 Sep Frontier Airlines
08 Sep Frontier Airlines
24 Sep Frontier Airlines
27 Sep Frontier Airlines
26 Sep Frontier Airlines
10 Sep Frontier Airlines
06 Sep Frontier Airlines
28 Sep Spirit Airlines

Also check the deals for return 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

Feel free to contact us with any feedback or request another flight research.