Singapore, Singapore → Siem Reap, Cambodia · ✈ 2h 10min · 🚗 21h 43min
721 nautical miles · Time difference: Same timezone · Direction: north
The distance from Singapore to Siem Reap 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 Singapore, Singapore to Siem Reap, Cambodia 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.
Siem Reap is located north of Singapore. Singapore is in Asia, in the Singapore region of Singapore, while Siem Reap is in Asia, in Siem Reap, Cambodia. 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 Singapore to Siem Reap. 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 Singapore to Siem Reap 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.
Singapore sits at 1.3521°N, 103.8198°E, while Siem Reap is located at 13.3633°N, 103.8564°E. The initial compass bearing from Singapore to Siem Reap is 0° (N), so a great-circle flight path leaves Singapore heading roughly N. 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 Singapore and Siem Reap 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.
Singapore and Siem Reap 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.
Singapore is a major city in Singapore with a population of approximately 5,850,342. Located in the Singapore region, it is an important hub in Asia. As one of the largest cities in Singapore, Singapore is a major international gateway with extensive air connections and multiple airports.
→ See all distances from Singapore
Siem Reap is a notable city in Cambodia with a population of approximately 245,494. Situated in the Siem Reap region, it serves as a key destination in Asia. Siem Reap is a popular destination in the Siem Reap region of Cambodia, known for its unique character and attractions.
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 Singapore-Siem Reap route is about 3.3% of Earth's circumference. A commercial jet covers this distance in about 2h 10min.
The straight-line distance from Singapore to Siem Reap 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.
Siem Reap is approximately Same timezone compared to Singapore.
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.