AirHint found the following cheapest return flights from Raleigh-durham (RDU) to London (LGW) in September 2025 (see full year).

Return flights

26 Sep - 05 Oct	Frontier Airlines
08 Sep - 14 Sep	Spirit Airlines
05 Sep - 08 Sep	Frontier Airlines
19 Sep - 21 Sep	Frontier Airlines
09 Sep - 04 Oct	Frontier Airlines
19 Sep - 26 Sep	jetBlue
19 Sep - 28 Sep	Frontier Airlines
01 Sep - 15 Sep	Spirit Airlines
07 Sep - 16 Sep	Frontier Airlines
10 Sep - 04 Oct	Frontier Airlines
08 Sep - 15 Sep	jetBlue
29 Sep - 06 Oct	Icelandair
17 Sep - 11 Oct	Frontier Airlines
22 Sep - 18 Oct	Frontier Airlines
29 Sep - 25 Oct	Spirit Airlines
18 Sep - 26 Sep	jetBlue
18 Sep - 25 Sep	Spirit Airlines
21 Sep - 15 Oct	British Airways
21 Sep - 14 Oct	British Airways
21 Sep - 13 Oct	British Airways

Also check the deals for one-way flights from Raleigh-durham 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 Raleigh-durham to London in September from 493€

Return flights