What is the best way to travel from Siem Reap to Phnom Penh?
Looking for a trip? Compare all the available Buses and Carpool for the journey to Phnom Penh from Siem Reap. Check between different modes of transportation, look for the cheapest tickets, fastest rides and most popular stations, and see all 23 available companies to find your perfect trip!
What is the cheapest way to reach Phnom Penh from Siem Reap?
You can get to Phnom Penh with just £6 by taking a Bus from Mey Hong Transport, but you can find many more cheap offers: we have selected the best ones for next few days here for you.
-
Mey Hong Transport6h 0m013:30Siem ReapMey Hong Transport19:30Phnom PenhTuol Kok Bus Stop0Economy
-
Mey Hong Bus6h 0m013:30Siem Reap19:30Phnom Penh0Economy
-
Cambolink 21 Express7h 0m010:00Siem ReapVirak Buntham Coach Station17:00Phnom PenhBus Station0Economy
-
Seila Angkor Express6h 0m010:30Siem ReapPhsa Samaki Market16:30Phnom PenhFrance Street (47)0Business
-
Capitol VIP6h 0m010:30Siem ReapAvis16:30Phnom PenhPreah Sihanouk Blvd 3400Business
-
Seila Angkor Express6h 0m010:30Siem ReapPhsa Samaki Market16:30Phnom PenhBus Station0Premium Economy
-
Larryta6h 0m010:00Siem ReapLarryta Express Bus Stop16:00Phnom PenhLarryta Express0Premium Economy
-
E-Booking Express5h 15m010:00Siem ReapLarryta Express Bus Stop15:15Phnom PenhFrance Street (47)0Premium Economy
-
SIMA Car5h 30m011:30Siem ReapNattakan17:00Phnom PenhBalconitel Boutique Hotel0Premium Economy
-
Cambodia Private Car Service5h 30m011:00Siem ReapNattakan16:30Phnom PenhBalconitel Boutique Hotel0Premium Economy
Cheapest Buses today
Cheapest Carpool today
-
Mey Hong Bus6h 0m008:30Siem ReapMey Hong Transport14:30Phnom PenhTuol Kok Bus Stop0Economy
-
Capitol VIP7h 0m007:30Siem ReapAvis14:30Phnom PenhPreah Sihanouk Blvd 3400Premium Economy
-
Cambolink 21 Express6h 0m007:00Siem ReapCoach Station13:00Phnom PenhBus Station0Economy
-
Olongpich Transport5h 55m018:30Siem ReapAvis00:25Phnom PenhLarryta Express0Economy
-
Chan Moly Night Bus Transportation018:30Siem ReapCoach Station00:30Phnom PenhBus Station0Economy
-
Larryta6h 0m006:00Siem ReapLarryta Express Bus Stop12:00Phnom PenhLarryta Express0Premium Economy
-
Larryta6h 0m006:30Siem ReapLarryta Express Bus Stop12:30Phnom PenhLarryta Express0Premium Economy
-
Larryta6h 0m007:00Siem ReapLarryta Express Bus Stop13:00Phnom PenhLarryta Express0Premium Economy
-
E-Booking Express5h 15m006:30Siem ReapLarryta Express Bus Stop11:45Phnom PenhFrance Street (47)0Premium Economy
-
E-Booking Express5h 15m007:30Siem ReapLarryta Express Bus Stop12:45Phnom PenhFrance Street (47)0Premium Economy
Cheapest Buses tomorrow
Cheapest Carpool tomorrow
-
Mey Hong Transport6h 0m008:30Siem ReapMey Hong Transport14:30Phnom PenhTuol Kok Bus Stop0Economy
-
Capitol VIP7h 0m007:30Siem ReapAvis14:30Phnom PenhPreah Sihanouk Blvd 3400Premium Economy
-
Seila Angkor Express6h 0m006:30Siem ReapPhsa Samaki Market12:30Phnom PenhFrance Street (47)0Business
-
Cambolink 21 Express6h 0m007:00Siem ReapCoach Station13:00Phnom PenhBus Station0Economy
-
Mey Hong Bus6h 0m008:30Siem ReapCoach Station14:30Phnom PenhBus Station0Economy
-
Sarah Transport5h 55m007:50Siem ReapCity Tour13:45Phnom PenhBus Station0Premium Economy
-
E-Booking Express5h 15m006:30Siem ReapLarryta Express Bus Stop11:45Phnom PenhFrance Street (47)0Premium Economy
-
Seila Angkor Express6h 0m006:30Siem ReapPhsa Samaki Market12:30Phnom PenhLarryta Express0Premium Economy
-
SIMA Car5h 30m002:30Siem ReapNattakan08:00Phnom PenhBalconitel Boutique Hotel0Premium Economy
-
Cambodia Private Car Service5h 30m006:00Siem ReapNattakan11:30Phnom PenhBalconitel Boutique Hotel0Premium Economy
Cheapest Buses Friday
Cheapest Carpool Friday
-
Mey Hong Bus6h 0m008:30Siem ReapMey Hong Transport14:30Phnom PenhTuol Kok Bus Stop0Economy
-
Capitol VIP7h 0m007:30Siem ReapAvis14:30Phnom PenhPreah Sihanouk Blvd 3400Premium Economy
-
Cambolink 21 Express6h 0m007:00Siem ReapCoach Station13:00Phnom PenhBus Station0Economy
-
Olongpich Transport5h 55m018:30Siem ReapAvis00:25Phnom PenhLarryta Express0Economy
-
Chan Moly Night Bus Transportation018:30Siem ReapCoach Station00:30Phnom PenhBus Station0Economy
-
Larryta6h 0m006:00Siem ReapLarryta Express Bus Stop12:00Phnom PenhLarryta Express0Premium Economy
-
Larryta6h 0m006:30Siem ReapLarryta Express Bus Stop12:30Phnom PenhLarryta Express0Premium Economy
-
E-Booking Express5h 15m006:30Siem ReapLarryta Express Bus Stop11:45Phnom PenhFrance Street (47)0Premium Economy
-
E-Booking Express5h 15m007:30Siem ReapLarryta Express Bus Stop12:45Phnom PenhFrance Street (47)0Premium Economy
-
Seila Angkor Express6h 0m006:30Siem ReapPhsa Samaki Market12:30Phnom PenhLarryta Express0Premium Economy
Cheapest Buses Saturday
Cheapest Carpool Saturday
-
Mey Hong Bus6h 0m008:30Siem ReapMey Hong Transport14:30Phnom PenhTuol Kok Bus Stop0Economy
-
Capitol VIP7h 0m007:30Siem ReapAvis14:30Phnom PenhPreah Sihanouk Blvd 3400Basic
-
Cambolink 21 Express6h 0m007:00Siem ReapCoach Station13:00Phnom PenhBus Station0Economy
-
Olongpich Transport5h 55m018:30Siem ReapVirak Buntham Coach Station00:25Phnom PenhPreah Sihanouk Blvd 3400Economy
-
Chan Moly Night Bus Transportation018:30Siem ReapCoach Station00:30Phnom PenhBus Station0Economy
-
E-Booking Express5h 15m006:30Siem ReapLarryta Express Bus Stop11:45Phnom PenhFrance Street (47)0Premium Economy
-
Seila Angkor Express6h 0m006:30Siem ReapPhsa Samaki Market12:30Phnom PenhLarryta Express0Premium Economy
-
Sarah Transport5h 30m010:30Siem ReapCity Tour16:00Phnom PenhBus Station0Premium Economy
-
SIMA Car5h 30m002:30Siem ReapNattakan08:00Phnom PenhBalconitel Boutique Hotel0Premium Economy
-
Cambodia Private Car Service5h 30m006:00Siem ReapNattakan11:30Phnom PenhBalconitel Boutique Hotel0Premium Economy
Cheapest Buses Sunday
Cheapest Carpool Sunday
-
Mey Hong Bus6h 0m008:30Siem ReapMey Hong Transport14:30Phnom PenhTuol Kok Bus Stop0Economy
-
Capitol VIP7h 0m007:30Siem ReapAvis14:30Phnom PenhPreah Sihanouk Blvd 3400Premium Economy
-
Cambolink 21 Express6h 0m007:00Siem ReapCoach Station13:00Phnom PenhBus Station0Economy
-
Chan Moly Night Bus Transportation018:30Siem ReapCoach Station00:30Phnom PenhBus Station0Economy
-
Cambotra Express6h 0m007:00Siem ReapLarryta Express Bus Stop13:00Phnom PenhMinistry of Information Coach Station0Business
-
Larryta6h 0m006:00Siem ReapLarryta Express Bus Stop12:00Phnom PenhLarryta Express0Premium Economy
-
E-Booking Express5h 15m006:30Siem ReapLarryta Express Bus Stop11:45Phnom PenhFrance Street (47)0Premium Economy
-
Seila Angkor Express6h 0m006:30Siem ReapPhsa Samaki Market12:30Phnom PenhLarryta Express0Premium Economy
-
SIMA Car5h 30m002:30Siem ReapNattakan08:00Phnom PenhBalconitel Boutique Hotel0Premium Economy
-
Cambodia Private Car Service5h 30m006:00Siem ReapNattakan11:30Phnom PenhBalconitel Boutique Hotel0Premium Economy
Cheapest Buses Monday
Cheapest Carpool Monday
-
Mey Hong Bus6h 0m008:30Siem Reap14:30Phnom Penh0Economy
-
Capitol VIP7h 0m007:30Siem ReapAvis14:30Phnom PenhPreah Sihanouk Blvd 3400Premium Economy
-
Cambolink 21 Express5h 0m007:30Siem ReapVirak Buntham Coach Station12:30Phnom PenhBus Station0Economy
-
Olongpich Transport5h 55m018:30Siem ReapAvis00:25Phnom PenhPreah Sihanouk Blvd 3400Economy
-
Chan Moly Night Bus Transportation018:30Siem ReapCoach Station00:30Phnom PenhBus Station0Economy
-
Seila Angkor Express6h 0m006:30Siem ReapPhsa Samaki Market12:30Phnom PenhBus Station0Premium Economy
-
Larryta6h 0m006:00Siem ReapLarryta Express Bus Stop12:00Phnom PenhLarryta Express0Premium Economy
-
E-Booking Express5h 15m006:30Siem ReapLarryta Express Bus Stop11:45Phnom PenhFrance Street (47)0Premium Economy
-
Sarah Transport5h 30m010:30Siem ReapCity Tour16:00Phnom PenhBus Station0Premium Economy
-
SIMA Car5h 30m002:30Siem ReapNattakan08:00Phnom PenhBalconitel Boutique Hotel0Premium Economy
Cheapest Buses Tuesday
Cheapest Carpool Tuesday
What are the fastest trips from Siem Reap to Phnom Penh?
You can get to Phnom Penh from Siem Reap in just 5h 0m with a Bus from Cambolink 21 Express. This is not the only option, and you can click on any of the offers below to compare it with the other modes of transportations.
-
E-Booking Express5h 15m010:00Siem ReapLarryta Express Bus Stop15:15Phnom PenhFrance Street (47)0Premium Economy
-
SIMA Car5h 30m011:30Siem ReapNattakan17:00Phnom PenhBalconitel Boutique Hotel0Premium Economy
-
Cambodia Private Car Service5h 30m011:00Siem ReapNattakan16:30Phnom PenhBalconitel Boutique Hotel0Premium Economy
-
Seila Angkor Express6h 0m010:30Siem ReapPhsa Samaki Market16:30Phnom PenhBus Station0Premium Economy
-
Larryta6h 0m010:00Siem ReapLarryta Express Bus Stop16:00Phnom PenhLarryta Express0Premium Economy
-
Mey Hong Transport6h 0m013:30Siem ReapMey Hong Transport19:30Phnom PenhTuol Kok Bus Stop0Economy
-
Mey Hong Bus6h 0m013:30Siem Reap19:30Phnom Penh0Economy
-
Seila Angkor Express6h 0m010:30Siem ReapPhsa Samaki Market16:30Phnom PenhFrance Street (47)0Business
-
Capitol VIP6h 0m010:30Siem ReapAvis16:30Phnom PenhPreah Sihanouk Blvd 3400Business
-
Cambolink 21 Express7h 0m010:00Siem ReapVirak Buntham Coach Station17:00Phnom PenhBus Station0Economy
Fastest Carpool today
Fastest Buses today
-
E-Booking Express5h 15m006:30Siem ReapLarryta Express Bus Stop11:45Phnom PenhFrance Street (47)0Premium Economy
-
E-Booking Express5h 15m007:30Siem ReapLarryta Express Bus Stop12:45Phnom PenhFrance Street (47)0Premium Economy
-
Larryta6h 0m006:00Siem ReapLarryta Express Bus Stop12:00Phnom PenhLarryta Express0Premium Economy
-
Larryta6h 0m006:30Siem ReapLarryta Express Bus Stop12:30Phnom PenhLarryta Express0Premium Economy
-
Larryta6h 0m007:00Siem ReapLarryta Express Bus Stop13:00Phnom PenhLarryta Express0Premium Economy
-
Olongpich Transport5h 55m018:30Siem ReapAvis00:25Phnom PenhLarryta Express0Economy
-
Mey Hong Bus6h 0m008:30Siem ReapMey Hong Transport14:30Phnom PenhTuol Kok Bus Stop0Economy
-
Cambolink 21 Express6h 0m007:00Siem ReapCoach Station13:00Phnom PenhBus Station0Economy
-
Capitol VIP7h 0m007:30Siem ReapAvis14:30Phnom PenhPreah Sihanouk Blvd 3400Premium Economy
Fastest Carpool tomorrow
Fastest Buses tomorrow
-
E-Booking Express5h 15m006:30Siem ReapLarryta Express Bus Stop11:45Phnom PenhFrance Street (47)0Premium Economy
-
SIMA Car5h 30m002:30Siem ReapNattakan08:00Phnom PenhBalconitel Boutique Hotel0Premium Economy
-
Cambodia Private Car Service5h 30m006:00Siem ReapNattakan11:30Phnom PenhBalconitel Boutique Hotel0Premium Economy
-
Sarah Transport5h 55m007:50Siem ReapCity Tour13:45Phnom PenhBus Station0Premium Economy
-
Seila Angkor Express6h 0m006:30Siem ReapPhsa Samaki Market12:30Phnom PenhLarryta Express0Premium Economy
-
Mey Hong Transport6h 0m008:30Siem ReapMey Hong Transport14:30Phnom PenhTuol Kok Bus Stop0Economy
-
Seila Angkor Express6h 0m006:30Siem ReapPhsa Samaki Market12:30Phnom PenhFrance Street (47)0Business
-
Cambolink 21 Express6h 0m007:00Siem ReapCoach Station13:00Phnom PenhBus Station0Economy
-
Mey Hong Bus6h 0m008:30Siem ReapCoach Station14:30Phnom PenhBus Station0Economy
-
Capitol VIP7h 0m007:30Siem ReapAvis14:30Phnom PenhPreah Sihanouk Blvd 3400Premium Economy
Fastest Carpool Friday
Fastest Buses Friday
-
E-Booking Express5h 15m006:30Siem ReapLarryta Express Bus Stop11:45Phnom PenhFrance Street (47)0Premium Economy
-
E-Booking Express5h 15m007:30Siem ReapLarryta Express Bus Stop12:45Phnom PenhFrance Street (47)0Premium Economy
-
Larryta6h 0m006:00Siem ReapLarryta Express Bus Stop12:00Phnom PenhLarryta Express0Premium Economy
-
Larryta6h 0m006:30Siem ReapLarryta Express Bus Stop12:30Phnom PenhLarryta Express0Premium Economy
-
Seila Angkor Express6h 0m006:30Siem ReapPhsa Samaki Market12:30Phnom PenhLarryta Express0Premium Economy
-
Olongpich Transport5h 55m018:30Siem ReapAvis00:25Phnom PenhLarryta Express0Economy
-
Mey Hong Bus6h 0m008:30Siem ReapMey Hong Transport14:30Phnom PenhTuol Kok Bus Stop0Economy
-
Cambolink 21 Express6h 0m007:00Siem ReapCoach Station13:00Phnom PenhBus Station0Economy
-
Capitol VIP7h 0m007:30Siem ReapAvis14:30Phnom PenhPreah Sihanouk Blvd 3400Premium Economy
Fastest Carpool Saturday
Fastest Buses Saturday
-
E-Booking Express5h 15m006:30Siem ReapLarryta Express Bus Stop11:45Phnom PenhFrance Street (47)0Premium Economy
-
Sarah Transport5h 30m010:30Siem ReapCity Tour16:00Phnom PenhBus Station0Premium Economy
-
SIMA Car5h 30m002:30Siem ReapNattakan08:00Phnom PenhBalconitel Boutique Hotel0Premium Economy
-
Cambodia Private Car Service5h 30m006:00Siem ReapNattakan11:30Phnom PenhBalconitel Boutique Hotel0Premium Economy
-
Seila Angkor Express6h 0m006:30Siem ReapPhsa Samaki Market12:30Phnom PenhLarryta Express0Premium Economy
-
Olongpich Transport5h 55m018:30Siem ReapVirak Buntham Coach Station00:25Phnom PenhPreah Sihanouk Blvd 3400Economy
-
Mey Hong Bus6h 0m008:30Siem ReapMey Hong Transport14:30Phnom PenhTuol Kok Bus Stop0Economy
-
Cambolink 21 Express6h 0m007:00Siem ReapCoach Station13:00Phnom PenhBus Station0Economy
-
Capitol VIP7h 0m007:30Siem ReapAvis14:30Phnom PenhPreah Sihanouk Blvd 3400Basic
Fastest Carpool Sunday
Fastest Buses Sunday
-
E-Booking Express5h 15m006:30Siem ReapLarryta Express Bus Stop11:45Phnom PenhFrance Street (47)0Premium Economy
-
SIMA Car5h 30m002:30Siem ReapNattakan08:00Phnom PenhBalconitel Boutique Hotel0Premium Economy
-
Cambodia Private Car Service5h 30m006:00Siem ReapNattakan11:30Phnom PenhBalconitel Boutique Hotel0Premium Economy
-
Larryta6h 0m006:00Siem ReapLarryta Express Bus Stop12:00Phnom PenhLarryta Express0Premium Economy
-
Seila Angkor Express6h 0m006:30Siem ReapPhsa Samaki Market12:30Phnom PenhLarryta Express0Premium Economy
-
Mey Hong Bus6h 0m008:30Siem ReapMey Hong Transport14:30Phnom PenhTuol Kok Bus Stop0Economy
-
Cambolink 21 Express6h 0m007:00Siem ReapCoach Station13:00Phnom PenhBus Station0Economy
-
Cambotra Express6h 0m007:00Siem ReapLarryta Express Bus Stop13:00Phnom PenhMinistry of Information Coach Station0Business
-
Capitol VIP7h 0m007:30Siem ReapAvis14:30Phnom PenhPreah Sihanouk Blvd 3400Premium Economy
Fastest Carpool Monday
Fastest Buses Monday
-
Cambolink 21 Express5h 0m007:30Siem ReapVirak Buntham Coach Station12:30Phnom PenhBus Station0Economy
-
Olongpich Transport5h 55m018:30Siem ReapAvis00:25Phnom PenhPreah Sihanouk Blvd 3400Economy
-
Mey Hong Bus6h 0m008:30Siem Reap14:30Phnom Penh0Economy
-
Capitol VIP7h 0m007:30Siem ReapAvis14:30Phnom PenhPreah Sihanouk Blvd 3400Premium Economy
-
E-Booking Express5h 15m006:30Siem ReapLarryta Express Bus Stop11:45Phnom PenhFrance Street (47)0Premium Economy
-
Sarah Transport5h 30m010:30Siem ReapCity Tour16:00Phnom PenhBus Station0Premium Economy
-
SIMA Car5h 30m002:30Siem ReapNattakan08:00Phnom PenhBalconitel Boutique Hotel0Premium Economy
-
Seila Angkor Express6h 0m006:30Siem ReapPhsa Samaki Market12:30Phnom PenhBus Station0Premium Economy
-
Larryta6h 0m006:00Siem ReapLarryta Express Bus Stop12:00Phnom PenhLarryta Express0Premium Economy
Fastest Buses Tuesday
Fastest Carpool Tuesday
Here you will find all operators and timetables for a
Bus from Siem Reap to Phnom Penh
What are the most popular stations in Siem Reap and Phnom Penh?
In Siem Reap, you will usually depart from Avis, City Tour or Taphul Road, while in Phnom Penh you will be arriving at Bus Station, Larryta Express or Khai Nam Bus Station, but there are many more stops to explore in both locations.
How do I decide? Some tips and tricks from our experience
Are you having trouble deciding on how to get to Phnom Penh from Siem Reap? With 10 connections between 23 Bus and Car operators, it can be difficult to find the one ride that will make you happy. But we have some tips that can help you make the best informed decision. First of all, the best trip is always the one that meets all your needs, so make a list of all the things that you want from this journey and look for something that will satisfy all of them. Here we will go through some of the factors mostly commonly taken into consideration.
Look for the lowest price
Ticket price is usually the main concern: even if you can afford to pay more, why do it if there are cheaper options? Saving on the trip means that you can spend more on the vacation itself! Between Siem Reap and Phnom Penh, you can pay as low as £6 with a Bus from Mey Hong Transport.Travel duration
Time is also an important factor. An earlier departure may allow you to see a beautiful sunset or relax before an important event. And remember, time is money, so paying more for a shorter trip may be well worth it. For longer distances, flights are without doubt the best options, but be mindful of airport times and possible delays: a high-speed train may end up cheaper and faster! Here the quicker option is definitely the Bus from Cambolink 21 Express: you will get to Phnom Penh in just 5h 0m.Comfort makes all the difference
You should always take into account what your personal travelling preferences are. Is one hand luggage enough, or are you trasporting more? Would you like to have a snack during the journey? Can you relax in a busy compartment, or do you need space for yourself? Even among the same mode of transportation, different companies will offer you varying levels of comfort and amenities. The main operators connecting Siem Reap and Phnom Penh are E-Booking Express, Seila Angkor Express and Larryta, but be sure to check what they have to offer!Save money with deals, and always compare
One last tip? Even if you live in Siem Reap and Phnom Penh is your only destination, it may be wise to check the offers from and to nearby cities or, if you are flyng, nearby airports. Check the trips from Krong Siem Reap or to Phnom Penh Airport, and look at flights from Siem Reap Airport, and landing at Phnom Penh Airport. Comparing different routes may allow you to find deals or promotions you were not aware of. Consider also signing up to CheckMyBus to see even more exclusive promotions!Which companies offer a trip from Siem Reap to Phnom Penh?
The most popular companies between Siem Reap and Phnom Penh, are E-Booking Express, Seila Angkor Express and Larryta. Be sure to check their seat class offers and the amenities that they provide.
Bus companies: Mey Hong Bus, Cambolink 21 Express, Capitol VIP and 5 more.
All you need to know when you travel from Siem Reap to Phnom Penh
Check all information on comfort and services on all modes of transports from Siem Reap to Phnom Penh. See which seat classes are available, and what amenities are other advantages offered by the operators on your journey.
FAQs about the trip from Siem Reap to Phnom Penh
How can I reach Phnom Penh from Siem Reap?
Every day, there are on average 10 connections between Bus and Car, with which you can get to Phnom Penh from Siem Reap.
How far is Phnom Penh from Siem Reap?
The distance between Siem Reap and Phnom Penh is 230.7 km.
What is the most ecofriendly mode of transport between Siem Reap and Phnom Penh?
Trains and buses are by far the greenest options, with trains surpassing buses on longer routes. Planes will always be the worst polluters, especially in shorter flights, were the emissions from the takeoff and landing are less offset by the distance.
On this particular route, a bus will emit, per person, a total of 6 kgs of CO2, a train 8 kgs, a car 39 kgs, and a flight 57 kgs.
What is the cheapest mode of transport from Siem Reap to Phnom Penh?
You can get to Phnom Penh with just £6 by taking a Bus from Mey Hong Transport.
What is the fastest way to get from Siem Reap to Phnom Penh?
While a plane is travelling fastest boarding and transfer to airport consumes a lot of time. Usually, high speed trains are better than flights if pure train travel time is below 4 hours. For this particular route, you can get to Phnom Penh in just 5h 0m with a Bus from Cambolink 21 Express.
More routes to Siem Reap and to Phnom Penh
Looking for more options? Here you can see the most popular routes to Siem Reap and to Phnom Penh. Simply click on a connection, and you’ll find all the details about the route!
- Trips to Siem Reap
- Bangkok to Siem Reap
- Battambang to Siem Reap
- Ho Chi Minh to Siem Reap
- Kampot to Siem Reap
- Kratié to Siem Reap
- Pakse to Siem Reap
- Pattaya to Siem Reap
- Phnom Penh to Siem Reap
- Poipet to Siem Reap
- Sênmônoŭrôm to Siem Reap
- Siem Reap Airport to Siem Reap
- Sihanoukville to Siem Reap
- Stung Treng to Siem Reap