AirHint found the following cheapest return flights from Charleston (CHS) to London (LHR) in September 2025 (see full year).

Return flights

09 Sep - 17 Sep	British Airways
30 Sep - 08 Oct	British Airways
04 Sep - 09 Sep	Finnair
24 Sep - 18 Oct	British Airways
28 Sep - 05 Oct	British Airways
24 Sep - 08 Oct	Delta
23 Sep - 08 Oct	Delta
11 Sep - 21 Sep	British Airways
13 Sep - 04 Oct	British Airways
10 Sep - 20 Sep	Delta
29 Sep - 06 Oct	United
29 Sep - 01 Oct	Spirit Airlines
26 Sep - 01 Oct	United

Also check the deals for one-way flights from Charleston 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 Charleston to London in September from 461€

Return flights