Siem Reap, Cambodia → Singapore, Singapore · ✈ 2h 10min · 🚗 21h 43min
721 nautical miles · Time difference: Same timezone · Direction: south
The distance from Siem Reap to Singapore is 1,336 km (830 miles). The fastest way to travel is by flight. A direct flight takes approximately 2h 10min.
The straight-line distance from Siem Reap, Cambodia to Singapore, Singapore is approximately 1,336 kilometers (830 miles or 721 nautical miles). This measurement uses the Haversine formula, computing the great-circle distance — the shortest path between two points on Earth's surface.
Singapore is located south of Siem Reap. Siem Reap is in Asia, in the Siem Reap region of Cambodia, while Singapore is in Asia, in Singapore, Singapore. Both cities are in Asia.
| Mode | Distance | Est. Time | Best For |
|---|---|---|---|
| ✈️ Flight | 1,336 km | ~2h 10min | Best option for speed |
| 🚗 Drive | ~1,737 km | ~21h 43min | Long journey, consider stops |
| 🚂 Regular Train | ~1,603 km | ~13h 22min | Scenic but slow |
Our recommendation: flight is typically the best way to travel from Siem Reap to Singapore. For 1,336 km, flying saves significant time and is usually the most practical choice.
Based on an estimated road distance of 1,737 km, fuel costs for driving from Siem Reap to Singapore are approximately $139–$261 USD (at $0.08–$0.15 per km, depending on vehicle efficiency and local fuel prices). Additional costs may include tolls, parking, and accommodation for longer trips.
Siem Reap sits at 13.3633°N, 103.8564°E, while Singapore is located at 1.3521°N, 103.8198°E. The initial compass bearing from Siem Reap to Singapore is 180° (S), so a great-circle flight path leaves Siem Reap heading roughly S. Because the Earth is curved, the actual heading shifts gradually along the route — pilots and navigation systems update it continuously instead of holding a single fixed compass bearing.
The latitude difference is 12.01° and the longitude difference is 0.04°. Each degree of latitude represents about 111 km, which is one reason cross-latitude routes feel longer even when the map looks similar to east–west journeys.
The geographic midpoint between Siem Reap and Singapore is approximately 7.3577°N, 103.8379°E. This is the great-circle halfway position — the spot where you would be exactly 668 km from each city. For road trips, a stop near this latitude/longitude makes for a natural overnight or lunch break.
Siem Reap and Singapore share the same approximate time zone, so meetings, calls, and arrivals don't require any clock adjustment. This makes the route especially convenient for short business trips. Daylight saving time can shift the offset by an hour during certain months, so confirm the exact difference for your specific travel dates.
Siem Reap is a major city in Cambodia with a population of approximately 245,494. Located in the Siem Reap region, it is an important hub in Asia. Despite its smaller size, Siem Reap plays an important regional role in Cambodia and attracts visitors year-round.
Singapore is a notable city in Singapore with a population of approximately 5,850,342. Situated in the Singapore region, it serves as a key destination in Asia. Singapore is one of Singapore's largest cities, offering major airport hubs, extensive public transport, and a wide range of accommodation options.
→ See all distances from Singapore
1,336 km is a long-distance route that typically requires air travel. This is comparable to spanning a large continent. For context, London to Dubai is about 5,500 km.
At 1,336 km, the Siem Reap-Singapore route is about 3.3% of Earth's circumference. A commercial jet covers this distance in about 2h 10min.
The straight-line distance from Siem Reap to Singapore is approximately 1,336 kilometers (830 miles, 721 nautical miles).
A direct flight takes approximately 2h 10min, based on 800 km/h cruising speed plus 30 minutes for takeoff and landing.
Estimated driving time is approximately 21h 43min, based on 80 km/h average speed and roads being ~30% longer than straight-line distance.
Singapore is approximately Same timezone compared to Siem Reap.
The estimated road distance is approximately 1,737 km, which is about 30% longer than the 1,336 km straight-line distance.
📍 Data: Coordinates from OpenStreetMap contributors. Distances calculated using the Haversine formula. Travel times are estimates only. Last verified: April 21, 2026.