AirHint found the following cheapest return flights from Atlanta (ATL) to London (LGW) in October 2025 (see full year).

Return flights

16 Oct - 03 Nov	Frontier Airlines
29 Oct - 12 Nov	Frontier Airlines
23 Oct - 31 Oct	Frontier Airlines
01 Oct - 08 Oct	Spirit Airlines
15 Oct - 22 Oct	Frontier Airlines
01 Oct - 15 Oct	Spirit Airlines
03 Oct - 10 Oct	Frontier Airlines
14 Oct - 21 Oct	Frontier Airlines
15 Oct - 19 Oct	Frontier Airlines
03 Oct - 13 Oct	Frontier Airlines
09 Oct - 16 Oct	Frontier Airlines
03 Oct - 11 Oct	Frontier Airlines
27 Oct - 03 Nov	Spirit Airlines

Also check the deals for one-way flights from Atlanta to London in October.

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 Atlanta to London in October from $484

Return flights