From Phnom Penh, you need to catch a bus that is heading to Koh Kong (you’ll pay full price), and then ask the driver if you can hop off at Andoung Teuk for Chi Phat. The driver may drop you off at Andoung Teuk itself, or at the turn off for Chi Phat, which is just a couple of kilometres before it. Andoung Teuk is a small town on the side of National Route 48, whereas there are just a few wooden stalls at the turn-off. A moto from either costs $7.
If you organise your transport in advance through the CBET programme, make sure the driver actually drops you off at Andoung Teuk because that is where your driver will be waiting for you.
The journey from Phnom Penh can take between four and six hours, depending largely on the traffic around Phnom Penh airport, which can get very congested. The trip from the drop-off to the village is just under 20 kilometres. You may need sunscreen as it is all exposed.
As of March 2016, Virak Buntham buses to Koh Kong leave Phnom Penh at 07:45 and 12:30. The tickets cost $10. They also have minivans, which are quicker, leaving at 07:30 and 13:00, which cost $13.
Olympic buses leave Phnom Penh at 07:45 and 11:45, and cost $8. They also run a minivan service, which costs $10.
Paramount Angkor buses from Phnom Penh leave at 07:00, 09:00, 11:00 and 13:00, and cost $8.
The Chi Phat website refers to Sorya Transport buses, however this had been suspended when we checked in December 2015. Our attempts to verify the situation in March 2016 were greeted with blank unawareness. Thank you Sorya Transport for putting on your publicly listed phone numbers people who do not know how to answer questions from potential customers.
From Sihanoukville, you can catch one of the Virak Buntham buses that leave at 08:00 and cost $8. The journey should take just under three hours.