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

Return flights

02 Aug - 16 Aug	Thai Lion Air
09 Aug - 16 Aug	Thai VietJet Air
01 Aug - 12 Aug	Thai Lion Air
11 Aug - 18 Aug	Thai VietJet Air
24 Aug - 30 Aug	Thai VietJet Air
12 Aug - 19 Aug	Thai VietJet Air
03 Aug - 14 Aug	IndiGo
03 Aug - 06 Aug	Air India
02 Aug - 05 Aug	Air India
07 Aug - 21 Aug	Air Arabia
31 Aug - 15 Sep	Air Arabia

Also check the deals for one-way flights from Bangkok 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 Bangkok to Riyadh in August from $442

Return flights