Phnom Penh can be reached by either domestic flights, international flights or overland and speedboat from neighboring provinces. Phnom Penh is a fairly easy city to get around. Though traffic is getting more congested these days, you can still travel the length of the city in less than 40 minutes. Regarding the economical boom these days, the traffic increases significantly.
Phnom Penh International Airport:
On arrival, taxis and motorcycle taxis (motodups) can be hired just outside the arrival lobby. There are no meter taxis (just developing this service). Taxis cost $7.00 for the 20-30 minute ride into the city centre. Cheaper, slower and less comfortable, motorcycle taxis can be hired for $2.00 into town. A usual taxi to the airport from town costs about $5-$7. Allow a minimum of 30-40 minutes to get to the airport, as you might get into some traffic jams during the rush hour.
Port of Phnom Penh:
The ferry port in Phnom Penh is on Sisowath Quay (the riverfront road) at Street 104, just north of the main riverfront park/restaurant area. If you are arriving in Phnom Penh, there are always motor taxis and car taxis waiting for fares. Motorcycle taxis run about R1500-R3000 and car taxis about $3-$5 to downtown hotels.
Cars and Taxis:
More common are un-metered, unmarked taxis, which can be arranged through your hotel or travel agent, and can also be found outside hotels along the Monivong Blvd. near Kampuchea Krom. A car plus driver costs you $20-$30/day. Shorter jaunts, for a minimum of $2-$3. 4WD vehicles will give you a ride for $60/day and up.
Short and long term rental of a wide variety of vehicles:
Motorcycle Taxis (Motodup):
The omnipresent motors are the most common and fastest form of public transportation but are certainly not the safest. They are more prone to accidents and robberies than cars. Motors cost from 1000R-4000R for a trip in town and $6-$10 per day. Prices go surely up at night.
A few guesthouses, have bicycles for rent for around $1-1.5/day. Bicycle stores are clustered near the intersection of Streets 182 and 107. They do not rent bikes, but a used bike can be bought for about $30-40 and resold for around $20.
Motorcycles (100cc - 125cc) can be rented for $3 - $5/day. Tourists often rent 250cc dirt bikes, even if it's a bit too much power and weight for the slow city traffic (250cc for $10-13). For in-city driving, a 100cc is recommended. A 250cc is perfect for the poor roads outside Phnom Penh. Chaotic traffic makes cycling in the city challenging in the extreme. Roads outside the city vary dramatically in condition. If you do decide to ride, drive slowly, stay right, wear a helmet and remember that medical services are quite limited.
Buses: Buses depart every 15 minutes to one hour, daily from 6am-6pm. 1200R-12000R. The station is at the corner of the Central Market. Route #1: Koki, Kien Svay, Neak Luong, And Route #2: Takhmao, Takeo, And Route #4: Kampong Speu, Sihanoukville, And Route #5: Oudong, Kampong Chhnang, Route #6: Kampong Cham, Kampong Thom, Siem Reap, Kratie. The prices are reasonable (approx. $1 for 70-80km).
Cyclos: The humble cyclo can be a romantic and practical form of transport though not as safe as a car or fast as a motor. Cyclos are easier than motors and during a rain they offer a drier ride. They often charge twice as much as a motors and are notorious for overcharging tourists, but keep in mind that’s physical work.
The best way to see the country at a leisurely pace is to hire a car with a driver. You can of course drive yourself around, but it probably wouldn’t be as pleasant as having someone else to drive you especially on unfamiliar roads and through heavy traffic. Renting a motorbike is great for short distances within the city and for touring rural areas. In Phnom Penh, the cyclo and motordops (motorcycle taxi) are popular means frequently used by locals. Metered taxis are also available; your hotel counter staff can help to order one which will usually take about 10mins to arrive.
Tourists can travel to all parts of Cambodia by bus, taxi, motorbike, boat and aeroplane. Within the capital of Phnom Penh, Siem Reap Province and Preah Sihanouk Province, sightseeing can conveniently be enjoyed on a Reumork. Buses are available from Phnom Penh to Siem Reap, Preah Sihanouk, Pursat, Battambang, Poipèt, Banteay Meanchey, Kratie, and Preah Vihear.
Boats are very popular means of transportation along the Tonlé Sap, Bassac, and Mekong rivers. These boats remove the hassle of meandering along the highways yet offer some spectacular scenery along the way. Cambodia Angkor Air, the National Flag Carrier operates to and from Phnom Penh and Siem Reap daily.
In the capital of Phnom Penh and the province of Siem Reap, a Cyclo including a driver can be hired at a reasonable price; do agree on a price before the ride.