AirHint found the following cheapest one-way flights from Bangkok (BKK) to Phnom-penh (PNH) in August 2025 (see full year).

One-Way flights

11 Aug	Thai VietJet Air	direct
21 Aug	Thai VietJet Air	direct
16 Aug	Thai VietJet Air	direct
31 Aug	Thai VietJet Air	direct
15 Aug	Thai VietJet Air	direct
29 Aug	Thai VietJet Air	direct
30 Aug	Thai VietJet Air	direct
24 Aug	Thai VietJet Air	direct
05 Aug	Thai VietJet Air	direct
19 Aug	Thai AirAsia	direct

Also check the deals for return flights from Bangkok to Phnom-penh 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.

Book a cheap hotel in Phnom-penh

Cheap car rent in Phnom-penh

Cheapest one-way flights from Bangkok to Phnom-penh in August from $46

One-Way flights