Bangkoc airport to Phnom Penh by bus

I have a friend flying into bangkoc in January , how does he get from Bkk airport to Phnom Penh on a bus?

The friend doesn't just want to take another plane ride for as low as $53? Or is it to see some of the countryside?

Well he's on a budget and wants to see country side , yes I would rather do the plane ride , he's on a tight budget ! Thank you if you know way thanks

There are two ways: BKK - Siem reap, take another bus to PP, and BKK - PP direct.

I just give links as I have no experience myself, to me it's a ridiculously long and annoying travel, and the wait at the Poipet border to get everyone on the bus his/her visa can be a mere 3 hours. Not for me.

BKK - PP http://www.bangkokpost.com/learning/lea … ehn-by-bus

BKK - SR http://www.flyingtoworld.com/bangkok-to … enh-by-bus

Good luck!

Thanks man perfect