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

Return flights

21 Sep - 28 Sep	Allegiant Air
09 Sep - 16 Sep	Frontier Airlines
15 Sep - 26 Sep	Frontier Airlines
25 Sep - 04 Oct	Breeze Airways
26 Sep - 05 Oct	Frontier Airlines
26 Sep - 06 Oct	Breeze Airways
10 Sep - 01 Oct	Air Canada
14 Sep - 25 Sep	Air Canada
30 Sep - 09 Oct	Air Canada
03 Sep - 24 Sep	Turkish Airlines
15 Sep - 24 Sep	Turkish Airlines

Also check the deals for one-way flights from Cincinnati 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.

Book a cheap hotel in London

Cheap car rent in London

Cheapest return flights from Cincinnati to London in September from $674

Return flights