How far is Phnom Penh from Siem Reap? Here's the quick answer if you are able to make this entire trip by car without stopping.
Nonstop drive: 198 miles or 319 km
Driving time: 5 hours, 2 minutes
Realistically, you'll probably want to add a buffer for rest stops, gas, or food along the way. To get a better idea of how long this trip would really be, scroll down to calculate how many hours it would take if you drive with stops.
Now let's assume you have a private jet and you can fly in the fastest possible straight line between Siem Reap, Cambodia and Phnom Penh, Cambodia. Because of the curvature of the Earth, the shortest distance is actually the "great circle" distance, or "as the crow flies" which is calculated using an iterative Vincenty formula.
Flight distance: 144 miles or 231 km
Flight time: 47 minutes
The straight line flight distance is 54 miles less than driving on roads, which means the driving distance is roughly 1.4x of the flight distance.
Your plane flies much faster than a car, so the flight time is about 1/6th of the time it would take to drive.
This is a relatively short flight in a private plane, but you might be planning to book a commercial flight. In that case, your travel time would really need to include how many minutes to get to your local airport, wait for security, board and taxi on the runway, land at the other airport, and get to your destination. Scroll down to see a more realistic calculation that takes into account all these factors to get a more accurate estimate of your actual flight time.
Let's say you're actually planning a road trip to Phnom Penh, and you want to stop on the way to explore. If it's a real road trip, you might want to check out interesting places along the way, or maybe eat at a great restaurant. That's what Trippy is perfect for, helping you figure out travel plans in detail.
Road trip: 1 day of driving
With the full itinerary planned out, we can estimate your total travel time for this trip.
Travel time: 5 hours on the road
Itinerary
Start in Siem Reap.
Drive for about 2.5 hours, then stop at The Lumley Chapel and stay overnight.
Finally, drive for about 2.5 hours and arrive in Phnom Penh.
To see all the details on this itinerary, including recommended restaurants, hotels, and things to do along the way, check out the full road trip planner:
In the quick calculation above, we assumed you had a private plane and just wanted to know the time in the air from city to city. But for most of us, we're going to be flying on a commercial airline (whether it's first class or coach). So that means we really need to account for all the extra travel time getting to the airport, waiting for our flight, and making it to the destination.
To give you a better estimate of real-life travel, we've put together a flight itinerary with actual airports. Eventually you'll be able to customize this plan, choosing your own airports and flights. But for now, here's an example we've selected to give you an idea of how traveling might work between airports.
Departure airport: Siem Reap-Angkor International Airport (REP)
Arrival airport: Phnom Penh International Airport (PNH)
With the airports selected, we can estimate the travel time to and from the airport, based on how far the airport is from downtown.
Getting to the airport: 14 minutes
Getting to your destination: 15 minutes
Now finally, let's look at an actual flight from REP to PNH on Cambodia Angkor Air and figure out how long it would take to fly including take-off and landing, and time to taxi on the runway.
Commercial flight time: 47 minutes
So now we can finally get an idea of the total travel time from Siem Reap to Phnom Penh including time spent getting to/from the airports, an estimated wait time of 2 hours at the airport for TSA security lines and waiting at the gate, and the actual flight itself.
Total travel time: 3 hours
To see the details on this flight plan, including recommended airports, airline, and route, check out the flight planner:
Trippy has a ton of information that can help you plan your trip to Phnom Penh, Cambodia. Start by reading the Trippy page on where to stay in Phnom Penh. Trippy members can suggest things to do in Phnom Penh like Tuol Sleng Genocide Museum. Click the button below to explore Phnom Penh in detail.
The distance is the same either way if you're flying a straight line (or driving the same roads back and forth). But for a real trip, there can be plenty of differences so go ahead and check the reverse directions to get the distance from Phnom Penh to Siem Reap, or go to the main page to calculate the distance between cities.
If you happen to know Siem Reap, don't forget to help other travelers and answer some questions about Siem Reap!
More info on this route:
drive from Siem Reap to Phnom Penh
road conditions
alternate routes
Google driving directions