Travel Cost from Phnom Penh to Siem Reap
Estimated cost to travel from Phnom Penh to Siem Reap: driving fuel around $23, or flights roughly $80–$250. Full budget breakdown.
Phnom Penh and Siem Reap are about 143 mi (231 km) apart in a straight line. By road that works out to roughly 186 mi (300 km), a drive of about 3 hr 20 min. A nonstop flight covers the great-circle distance in approximately 46 min.
| Straight-line distance | 143 mi / 231 km |
| Road distance (est.) | 186 mi / 300 km |
| Driving time (est.) | 3 hr 20 min |
| Nonstop flight (est.) | 46 min |
| Driving fuel (est., 1-way) | $23 |
| Typical flight fare | $80–$250 |
| Geographic midpoint | 12.463, 104.390 |
Sample budget
Driving fuel one-way is about $23. A simple road trip with no overnight stay and meals comes to roughly $73 for one traveler (fuel $23, lodging $0, food $50). Flights instead run about $80–$250 per person.
Customize in the cost calculatorHow these estimates work
Straight-line distance uses the haversine formula on each city's coordinates. Road distance applies a circuity factor (~1.2–1.4×) and driving time a blended average speed. Flight time uses typical jet cruise speed plus ~30 minutes for taxi, climb and descent. Treat all figures as planning estimates.
Frequently asked questions
Phnom Penh to Siem Reap is about 143 mi (231 km) in a straight line, and roughly 186 mi (300 km) by road.