Kuala Lumpur to Siem-reap Flight Distance
Kuala Lumpur International Airport (KUL) to Siem Reap International Airport (REP)
Primary sources · 6
- [1] Vincenty (1975) — Direct and Inverse Solutions of Geodesics on the Ellipsoid — the iterative formula used for distance · Survey Review XXIII (176), pp. 88–93 · April 1975 https://www.ngs.noaa.gov/PUBS_LIB/inverse.pdf
- [2] NGA.STND.0036_1.0.0_WGS84 — WGS-84 reference ellipsoid (a = 6,378,137 m, 1/f = 298.257223563) · NGA Standard · July 2014 https://earth-info.nga.mil/index.php?dir=wgs84&action=wgs84
- [3] DESNZ 2024 conversion factors — Per-km kg CO₂e factors for the three distance bands and four cabin classes · UK Department for Energy Security and Net Zero · June 2024 https://www.gov.uk/government/publications/greenhouse-gas-reporting-conversion-factors-2024
- [4] Lee et al. (2021) — Effective radiative forcing of aviation — the science behind the 1.9 × CO₂ → CO₂e uplift · Atmospheric Environment 244, 117834 · January 2021 https://doi.org/10.1016/j.atmosenv.2020.117834
- [5] OpenFlights — Airport coordinates and IATA codes · openflights.org/data.php · Community-maintained https://openflights.org/data.php
- [6] Sack (2010) — Jet-lag review — clinical chronobiology and asymmetric recovery rates · New England Journal of Medicine 362:440 · February 2010 https://www.nejm.org/doi/full/10.1056/NEJMcp0909838
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Your Route Summary
What This Means For Your Trip
Flight Duration: At 747 miles, this short-haul flight will take approximately 1h 55m. This is a relatively quick flight where you may not even need entertainment.
Time Adjustment: Siem-reap is 1 hour behind Kuala Lumpur. You should experience minimal jet lag.
Environmental Impact: An economy class seat produces approximately 307 kg of CO2. Consider carbon offset programs if environmental impact is a concern.
Flight Options: 2 airlines serve this route, giving you options for schedule and price comparison.
Complete Flight Analysis
| Metric | Value | Category / Reference |
|---|---|---|
| Distance (Miles) | 747 mi | Primary frequent flyer unit |
| Distance (Kilometers) | 1,202 km | International standard |
| Distance (Nautical Miles) | 649 nm | Aviation standard |
| Flight Time | 1h 55m | Based on 850 km/h cruise + ground time |
| Route Classification | SHORT HAUL | Short-haul flight (under 1,500 km) |
| Flight Direction | 11° N | North |
| Cruising Altitude | 33,000 ft | FL330 (10,058 m) |
| Time Difference | -1h | Jet lag: none |
| CO2 (Economy) | 307 kg | DEFRA 2024 factors |
| CO2 (Business) | 889 kg | 2.9x economy |
| CO2 (First Class) | 1226 kg | 4x economy |
| Trees to Offset | 28 | Economy class, per passenger |
| Fuel per Passenger | 36 L | ~6,480 L total (180 pax) |
| Operating Airlines | 2 | Direct flights available |
Tips for This Route
Kuala Lumpur International Airport
Kuala Lumpur, Malaysia
Siem Reap International Airport
Siem-reap, Cambodia
Airlines Flying This Route
2 airlines operate flights between Kuala Lumpur and Siem-reap.
Flight Details
Flight Midpoint
The geographic midpoint of this flight is located at:
Carbon Emissions by Cabin Class
CO2 emissions vary by cabin class due to seat space allocation. Based on DEFRA 2024 emission factors.
Jet Lag & Travel Tips
- Minimal time difference - jet lag unlikely
Seat Recommendations
Distance in Perspective
Distance & Speed Reference
| Measurement | Value |
|---|---|
| Statute Miles | 747 mi |
| Kilometers | 1,202 km |
| Nautical Miles | 649 nm |
| Meters | 1,202,000 m |
| Feet | 3,944,160 ft |
| Flight Time (850 km/h) | 1h 55m |
| Driving Time (80 km/h avg) | 15 hours |
Travel Speed Comparison
How long would it take to cover the 1,202 km between Kuala Lumpur and Siem-reap at different speeds?
| Mode | Speed | Time |
|---|---|---|
| Commercial Jet | 850 km/h | 1h 55m |
| Turboprop Aircraft | 500 km/h | 2h 24m |
| Bullet Train | 320 km/h | 3h 45m |
| Car (highway) | 100 km/h | 12h 1m |
| Walking | 5 km/h | 240h (10 days) |
| Speed of Sound | 1,235 km/h | 0h 58m |
Round Trip Summary
Quick Facts
Routes from KUL
View all routesFrequently Asked Questions
How far is Kuala Lumpur from Siem-reap?
The flight distance from Kuala Lumpur International Airport (KUL) to Siem Reap International Airport (REP) is 747 miles (1,202 km). This is the great circle distance calculated using the Vincenty formula.
How long is the flight?
A direct flight takes approximately 1h 55m. This is a short-haul flight typically cruising at 33,000 feet (FL330).
What is the time difference?
Siem-reap is 1 hour behind Kuala Lumpur.
What airlines fly this route?
2 airlines operate this route: AirAsia, Malaysia Airlines.
What is the carbon footprint?
Economy class: 307 kg CO2 per passenger. Business class: 889 kg. First class: 1226 kg. Offset with ~28 trees.
Which seat side is best?
For this North flight, the right side offers the best views away from sun glare.
Can I drive from Kuala Lumpur to Siem-reap instead of flying?
While driving is technically possible at 1,202 km, it would take approximately 15 hours of non-stop driving. Flying saves you significant time, reducing travel to just 1h 55m.
What aircraft typically fly this route?
This short-haul route is typically served by Airbus A320, Boeing 737, Embraer E190 aircraft. These are narrow-body aircraft designed for efficient short-distance travel.
How can I offset the carbon from this flight?
An economy class seat on this route produces 307 kg CO2. You can offset this by planting approximately 28 trees, purchasing verified carbon credits through programs like Gold Standard or Verra, or supporting renewable energy projects. Many airlines also offer built-in carbon offset options during booking.
External Resources & References
Learn more about the airports, aviation data, and carbon emissions methodology used in this calculation.