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

One-Way flights

07 Sep	Thai AirAsia	direct
05 Sep	Thai AirAsia	direct
09 Sep	Thai AirAsia	direct
01 Sep	Thai AirAsia	direct
12 Sep	Thai AirAsia	direct
02 Sep	Thai AirAsia	direct
26 Sep	Thai AirAsia	direct
29 Sep	Thai AirAsia	direct
10 Sep	Thai AirAsia	direct
28 Sep	Thai AirAsia	direct

Also check the deals for return flights from Phnom-penh to Bangkok 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 one-way flights from Phnom-penh to Bangkok in September from 48€

One-Way flights