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

Return flights

31 Aug - 10 Sep	British Airways
26 Aug - 16 Sep	Brussels Airlines
26 Aug - 30 Sep	Brussels Airlines
30 Aug - 07 Sep	British Airways
27 Aug - 17 Sep	British Airways
28 Aug - 04 Sep	Eurowings
27 Aug - 05 Sep	British Airways
30 Aug - 14 Sep	Scandinavian Airlines
27 Aug - 03 Sep	British Airways
18 Aug - 01 Sep	Aer Lingus
18 Aug - 24 Aug	KLM
13 Aug - 18 Aug	KLM
17 Aug - 24 Aug	Air France
19 Aug - 24 Aug	Air France
12 Aug - 18 Aug	Air France
12 Aug - 19 Aug	Air France
23 Aug - 28 Aug	Eurowings
25 Aug - 28 Aug	KLM
13 Aug - 19 Aug	Air France
11 Aug - 18 Aug	Air France

Also check the deals for one-way flights from London to Riyadh in August.

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 London to Riyadh in August from $405

Return flights