Buses from Koh Rong to Siem Reap

Buses from Koh Rong to Siem Reap

Koh Rong
Siem Reap
Sun, Aug 9
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2 Travelers
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Koh Rong to Siem Reap Destination Reviews

HK
Hannah K
I booked my ticket so that I would arrive in Siem Reap for 7.30pm however when I reached my transfer in Phnom Penh they told me I would have to wait until 4.30pm for my bus meaning that I wouldn’t arrive until around 10pm. When I questioned this as there was an earlier bus leaving which would have got me to Siem Reap on time the employee just looked at me and laughed. There was no explanation as to why my arrival time was pushed back 2.5hrs and this caused a lot of stress as I was unsure if my hostel reception would still be open on my arrival. I understand that sometimes things change but to have someone laugh in my face and give no explanation was not acceptable in my eyes.
Koh Rong to Siem Reap, Bus Comfort Minibus, Sima Express, Jul 20, 2026
TM
Thomas M
Arrived at 11.30 pm instead of 8.30pm due to waiting for a change of bus in Phnom Penh (staff were very friendly there), bus was also definitely a downgrade from the photos shown of 12togo as seats weren’t vaguely similair or comfy. Very little communication from the driver
Koh Rong to Siem Reap, Bus Comfort Minibus, Sima Express, Jun 26, 2026
YT
Yarima T
The timetable taken on the booking was not followed. The trip took 4 hours more then planned and using the rote and the bus change was impossible. We arrived Siem Reap too late for our plans.
Koh Rong to Siem Reap, Bus Ferry + Bus, Koh Rong Island Transport, Sep 1, 2025
TL
Tom L
We parked a long time in the beginning. No electricity in the cabins.
Koh Rong to Siem Reap, Bus Standard, Champa Tourist Bus, Jun 4, 2025
SS
Sophie S
2 stars because the boat was on time and good, and the first bus was good. We went from Koh Rong to siem reap. The boat from KR to sihanoukville was fine and good. The bus from sihanoukville to Phnom Penh was fine, cramped but fine and air coned. The second bus however, was the worst journey I’ve had in my whole SE Asia trip. It was completely unacceptable
Koh Rong to Siem Reap, Bus Ferry + Van, Koh Rong Island Transport, May 7, 2025
SR
Sarah R
All in all it was okay, it was pretty comfortable and I almost slept the whole ride, only the bus stopped very often and we arrived an hour late and it didn’t bring us to the location that we were supposed to get dropped off, it was further outside the city so we had to get a Tuktuk to our hostel.
Koh Rong to Siem Reap, Bus Standard, Champa Tourist Bus, May 4, 2025
4.4
18 customer reviews
5
11%
4
0%
3
45%
2
44%
1
0%

Koh Rong to Siem Reap Bus Schedule

OperatorClassDeparture TimeArrival TimePriceRating
Koh Rong Island Transport
Minibus
06:30
18:00
$39.95
  2.0
Koh Rong Island Transport
Minibus
08:45
21:00
$39.95
  2.0
Koh Rong Island Transport
Minibus
09:30
20:30
$39.95
  2.0
Champa Tourist Bus
Standard
10:00
21:00
$35.00
Koh Rong Island Transport
Minibus
12:30
03:00
$39.95
  2.0
Koh Rong Island Transport
Minibus
13:00
01:30
$39.95
  2.0
Sovan Rithy Express
Ferry + Bus
13:45
22:45
$36.00
Koh Rong Island Transport
Ferry + Van
15:00
00:00
$36.00
Koh Rong Island Transport
Ferry + Van
15:30
00:30
$36.00
Champa Tourist Bus
Standard
16:00
05:30
$30.00
  2.7
Sovan Rithy Express
Ferry + Bus
16:45
01:45
$36.00
Go Ho Travel
Bus + Ferry
20:30
09:30
$26.66

How to get from Koh Rong to Siem Reap by bus

Bus travel remains one of the most affordable and convenient ways to travel between many destinations. Getting from Koh Rong to Siem Reap by bus may not be the fastest way of travel, yet many travellers prefer to rely on the bus on this route; with easy online booking and tickets of different classes for all tastes and budgets available, the bus from Koh Rong to Siem Reap a conscious and budget-friendly option.

Check the timetable before you book your ticket and read other travellers’ reviews to choose the trip that suits you best. Note that there may be several bus terminals at your departure or arrival point – always double-check where you are leaving from and arriving to. It may prove crucial if you have connecting trips.

Here is the list of operators serving the route: .

How far is Koh Rong from Siem Reap?

If travelling by bus, you will cover the distance of 450 km between Koh Rong and Siem Reap.

How long does it take to get from Koh Rong to Siem Reap by bus?

Buses normally need between 10h 10m and 11h 10m hours to get to Siem Reap from Koh Rong. Note that the travel time is for your reference only and can depend on different factors such as traffic and weather conditions. Heavy rainfalls almost inevitably make the trip longer due to poor visibility or floods. Road and surface repairs which happen quite often, result in detours and longer travel times. Major national holidays, long weekends, or peak season periods may cause delays both in departures and arrivals – plan accordingly to avoid disappointment, especially if you have further connections and a tight schedule.

On this route, Sima Express offers the fastest service. Sima Express buses usually take the longest time to complete the journey.

Remember, though, that tickets offering the shortest travel time are normally the most expensive ones. Yet it pays to spend a bit more to ensure your bus goes direct without additional stops and uses highways instead of local roads.

How much does it cost to get from Koh Rong to Siem Reap by bus?

The price of your bus ticket will depend not only on the distance you need to cover but on the class of your coach. E.g. expect to shell out more for VIP or sleeper buses while ordinary buses though being the cheapest option, often are a compromise on comfort and travel time. Of course, they do their job, too, and can be the only option if you hop on/off in the middle of the route.

Anyway, travelling by bus between Koh Rong and Siem Reap remains an affordable option. The cheapest ticket is offered by Sima Express and costs USD 49.00. A Sima Express's ticket will set you back USD 49.00 on average.

Travelling by bus essentials

  • If you are planning to travel during the high season, weekends, or national holidays, booking your bus tickets in advance is highly recommended. The demand is at its highest, yet very often, the number of coaches serving the route remains the same. The earlier you reserve your seat, the better. On some routes, you need to secure your ticket more than a month in advance; on others, a couple-of-days advanced booking is enough. During such periods, try to book online beforehand whenever possible, as showing up at the bus station without a ticket may result in many-hours of waiting in the queue or leave you downright stranded.
  • VIP, 1st, Gold, and similar bus tickets are the most expensive option, but they provide a higher level of comfort. Normally the price of such tickets will include wide soft reclining seats, blankets, water and snacks or lunch, and sometimes some toiletries. Upper-class buses travel faster, make fewer stops during the route, and normally provide more spacious seating to their passengers and a better travel experience.
  • Not all buses have an on-board toilet, but generally, for all trips longer than three hours, all operators schedule a bathroom and/or a lunch stop. While operators definitely do their best to keep on-board toilets clean, the smell may be an issue sometimes. For longer trips, booking a seat a bit farther from the toilet may be a good idea. Also, using bathroom stops for your toilet needs is always better than trying to find your balance in an on-board toilet on the run.
  • If you travel by an air-con bus, make sure to pack layers. A hoodie, a warm scarf, or a beanie hat may prove a good idea. Air-conditioning on buses tends to be excessive, and running nose and sore throats abound after even not the longest bus rides.
  • Always use the security belts even if your bus ride attendant or driver does not insist on it. Your safety comes first – for you, for sure. All buses normally are equipped with security belts, but they may be fixed behind your seat. Take time to find the belt and fix it appropriately.
  • To avoid being disturbed by overhead lights, switched on during stops even at night, and too loud music or sound from the on-board entertainment system, have earplugs and a sleeping mask at hand.
  • As a courtesy to other passengers, avoid using strong perfumes or smelly foods. Some foods like cheeses or durians are forbidden to take on-board – check in advance. Alcohol is also prohibited on the majority of buses.
  • Note that if the bus requires refuelling en-route, passengers will be asked to get off the bus. Operators are not allowed to refuel with passengers on board due to safety reasons. Usually, it takes from 5 to 10 minutes and is often combined with a toilet/lunch stop.
  • If not stated otherwise in your tickets, arrive at the bus station 20-30 minutes before departure. It will give you enough time to find the departure platform and check-in. For international trips, you may need more time for check-in and border formalities.

Transportation from Koh Rong to Siem Reap

Facts about the bus from Koh Rong to Siem Reap

Cheapest Bus$44
Fastest Bus9h 25m
Earliest Bus6:30 AM
Latest Bus4:20 PM
Daily Bus Routes24
Distance450 kilometers
Bus CompaniesKoh Rong Island Transport, Riya Transport, Sima Express, Sovan Rithy Express