# Distance from Cancun (CUN) to Siem Reap (SAI)

> 16,001 km · estimated flight time 20h · Ultra-long-haul route.

## Summary

- **Distance**: 16,001 km / 9,943 mi / 8,640 nm
- **Estimated flight time**: 20h
- **Heading**: 341° (north northwest)
- **Return heading**: 18° (north northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (Mexico) → Cambodia
- **Intercontinental**: North America → Asia
- **Time difference**: +12h (When it's 14:07 in Cancun, it's 02:07 in Siem Reap)
- **Elevation difference**: 169 ft (SAI is higher than CUN)

## Airports

### [Cancun International Airport (CUN)](https://www.flightduration.online/airport/cun-cancun-cancun-international-airport/1ef266df-6268-6862-9a5d-06bb2780ed98)

- City: Cancun, Mexico
- ICAO: MMUN
- Timezone: America/Cancun
- Coordinates: 21.040000, -86.880000
- Elevation: 22 ft

### [Siem Reap Angkor International Airport (SAI)](https://www.flightduration.online/airport/sai-siem-reap-siem-reap-angkor-international-airport/1ef266df-efb4-65c2-940b-06bb2780ed98)

- City: Siem Reap, Cambodia
- ICAO: VDSA
- Timezone: Asia/Phnom_Penh
- Coordinates: 13.370000, 104.220000
- Elevation: 191 ft

## Route notes

This is an ultra-long-haul route, one of the longest in aviation. It requires wide-body aircraft with extended range capability such as the Airbus A350-900ULR or Boeing 777-200LR. Passengers should prepare for an extended flight with multiple meal services.

Time-zone information: When it's 14:07 in Cancun, it's 02:07 in Siem Reap.
With a 12-hour time difference, expect significant jet lag.

## Related

- [Cancun International Airport (CUN)](https://www.flightduration.online/airport/cun-cancun-cancun-international-airport/1ef266df-6268-6862-9a5d-06bb2780ed98)
- [Siem Reap Angkor International Airport (SAI)](https://www.flightduration.online/airport/sai-siem-reap-siem-reap-angkor-international-airport/1ef266df-efb4-65c2-940b-06bb2780ed98)
- [Flight duration calculator](/#calculator)