AirHint found the following cheapest return flights from Phnom-penh (PNH) to Singapore (SIN) in September 2025 (see full year).

Return flights

04 Sep - 07 Sep	Emirates
03 Sep - 05 Sep	Singapore Airlines	direct
04 Sep - 05 Sep	Singapore Airlines	direct
05 Sep - 07 Sep	Emirates	direct
02 Sep - 05 Sep	Emirates	direct
02 Sep - 06 Sep	Emirates	direct
01 Sep - 05 Sep	Emirates	direct
04 Sep - 08 Sep	Emirates	direct
01 Sep - 04 Sep	Emirates	direct
04 Sep - 07 Sep	Emirates	direct
29 Sep - 06 Oct	Singapore Airlines	direct
26 Sep - 04 Oct	Singapore Airlines	direct
25 Sep - 05 Oct	Singapore Airlines	direct
30 Sep - 07 Oct	Singapore Airlines	direct

Also check the deals for one-way flights from Phnom-penh to Singapore 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.

Book a cheap hotel in Singapore

Cheap car rent in Singapore

Cheapest return flights from Phnom-penh to Singapore in September from 159€

Return flights