So we have finalized our trip to Siem Reap, after working on the best and most economical way to go. The air tickets were too expensive and not worth it for us. I was considering the casino bus but was worried about the possibility of casino staff taking away our passports as a form of collateral, (casino bus costs 300 baht, a great deal, with a 100 or 200 baht money back and includes a buffet meal at the casino.)
Another cheap way is the train, however, had a friend who took the train and his trip was delayed for over half a day. We cannot take the risk as we only have 5 days, and 2 days will be the traveling there and back.
Anyway, we were psyched to find out about the direct bus from Bangkok to Siem Riep, but several sources indicated that the route was canceled due to “some problems.” Mixed messages here and there, canceled, postponed, running, I need confirmation! Fortunately, found a forum saying that the bus route supposedly became operative on February 21st, 2013 and it sounded solid enough for us.
Of course there’s not much information assuring this bus service online, or how to purchase tickets, so we decided to find out for sure by going to Mochit station. I had called beforehand just because it was so hot outside and wanted to avoid a wasted trip but the attempted calls were to no avail, so we just took off to Mochit.
Update: Now you can get your bus tickets online! http://www.thaiticketmajor.com/bus/index.php?la=en
How to get to Mochit Bus Terminal: https://www.landoftheraisingsons.com/post/getting-to-mochit-station
[You have to register on the website, and pay a little extra fee “It only costs an additional 20 Baht per ticket, and a 46 Baht ‘convenience fee’ per payment transaction.You can collect your tickets in advance from one of their offices or at the bus station one hour ahead of departure time.” – Kimberly (Thank you!)]
Arrived at Mochit on 3rd floor, and were bounced back and forth to a few booths until, alas, we found the ticket booth for Bangkok to Siem Riep! Yippeeeeeeeeee. The right booth is on the 1st floor, and looks like this. Another way to notice it, is the LCD sign (not featured here) which helped us to finally find it after the 4th or 5th person finally pointed us to the right booth.
Once we arrived at the booth, we informed the staff of the date we would like to travel and then we picked seat numbers. Make sure to bring your passports just in case, although they don’t check it too much. You just have to let them know your name and passport numbers, which will be presented on your tickets.
The guy may take a little while to type your names and passport numbers in, but just bare with it. The tickets costs 750 baht one way, note that you cannot buy a return ticket. A return ticket is only available in Siem Reap, which will be the first thing we will ask once we arrive. Hopefully the trip will be smooth and I will come and update again on the experience. (Check out our actual trip to Siem Reap: https://www.landoftheraisingsons.com/post/direct-bus-from-bangkok-to-siem-reap-step-by-step-journey)
The ticket also doubles as a meal ticket (probably more like snacks,) so don’t throw it away and keep it around after boarding the bus. Hope this was useful, and now you know the mythical bus route “Bangkok – Siem Reap” does exist!
Food update: The food on the bus was horrible, word of advice, bring your own food. It’s gonna be a 8-9 hours journey. For convenience, there’s a huge 7-11 at Mochit Station for you to stock up on some food.
Actual Bus Trip: https://www.landoftheraisingsons.com/post/direct-bus-from-bangkok-to-siem-reap-step-by-step-journey
Update: Now you can get your bus tickets online! http://www.thaiticketmajor.com/bus/index.php?la=en
New route: Low cost airline flies to Siem Reap! https://www.landoftheraisingsons.com/post/low-cost-flights-from-bangkok-to-siem-reap
berriesenthusiast 
Thanks so much for posting this info! It’s the most thorough I’ve found and I’ll be trying this route out in a couple weeks!
You’re very welcome 🙂 Enjoy your trip!
Thank you so much for this post.. I am going on this trip in a few days and this was Sooooo great to have this info!
You’re welcome! If there are any changes please let me know, so I can update other travelers too 🙂 Enjoy your trip!
Actually, yeah! Today we went to the Mochit Skytrain station and couldn’t find a bus stop anywhere. It wasn’t until doing more research that I found the Mochit bus station is no where near the Mochit Skytrain stop. You might want to mention that in your article! I found this about how to find the bus station: http://www.pombai.com/blog/travel/find-mo-chit-2-bus-station-bangkok/
I wanted to get the tickets in person to confirm everything, but maybe I’ll but them online after all.
I mean, “BUY” them online, not “BUT”. 🙂
I have been trying all day to book the bus ticket from the link provided. For some reason the user ID and password never seems to get accepted. Is there any other site from where we can do the booking?
That’s the only website I am aware of. Perhaps you need to try inserting numbers or special symbols in the password. I was on the website and it is not very stable, sometimes you just need a different browser or just try another time for it to work properly. Hope you can get it to work!
How much bus costs from Siam Reap to Bangkok?and what time bus depart from siam reap?
28 dollars as of April 2013, it departs at 8 am.
Thanks a million for the info. Heading that way in a few days
No problem! Hope you enjoyed your trip!