AirHint found the following cheapest return flights from Riyadh (RUH) to London (STN) in September 2025 (see full year).

Return flights

11 Sep - 13 Sep	Flynas
11 Sep - 23 Sep	Flynas
08 Sep - 19 Sep	flyadeal
25 Sep - 27 Sep	AJet
14 Sep - 17 Sep	Pegasus Airlines
12 Sep - 13 Sep	Pegasus Airlines
23 Sep - 28 Sep	AJet
05 Sep - 16 Sep	AJet
08 Sep - 16 Sep	flyadeal
08 Sep - 12 Sep	flyadeal
30 Sep - 07 Oct	AJet
18 Sep - 05 Oct	AJet
30 Sep - 10 Oct	AJet
30 Sep - 08 Oct	AJet
13 Sep - 03 Oct	flyadeal
26 Sep - 02 Oct	AJet
18 Sep - 04 Oct	flyadeal
25 Sep - 02 Oct	AJet
19 Sep - 03 Oct	AJet
25 Sep - 03 Oct	AJet

Also check the deals for one-way flights from Riyadh 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 Riyadh to London in September from $265

Return flights