# Distance from Siem Reap (REP) to Quito (UIO)

> 18,519 km · estimated flight time 23h · Ultra-long-haul route.

## Summary

- **Distance**: 18,519 km / 11,507 mi / 10,000 nm
- **Estimated flight time**: 23h
- **Heading**: 9° (north)
- **Return heading**: 351° (north)
- **Classification**: Ultra-long-haul
- **Type**: International (Cambodia) → Ecuador
- **Intercontinental**: Asia → South America
- **Time difference**: -12h (When it's 05:36 in Siem Reap, it's 17:36 in Quito)
- **Elevation difference**: 9,140 ft (UIO is higher than REP)

## Airports

### [Angkor International Airport (REP)](https://www.flightduration.online/airport/rep-siem-reap-angkor-international-airport/1ef266df-efb8-691a-a780-06bb2780ed98)

- City: Siem Reap, Cambodia
- ICAO: VDSR
- Timezone: Asia/Phnom_Penh
- Coordinates: 13.410000, 103.810000
- Elevation: 60 ft

### [Nuevo Aeropuerto Internacional Mariscal Sucre (UIO)](https://www.flightduration.online/airport/uio-quito-nuevo-aeropuerto-internacional-mariscal-sucre/1ef266df-a57c-65f4-aaa1-06bb2780ed98)

- City: Quito, Ecuador
- ICAO: SEQM
- Timezone: America/Guayaquil
- Coordinates: -0.130000, -78.360000
- Elevation: 9,200 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 05:36 in Siem Reap, it's 17:36 in Quito.
With a 12-hour time difference, expect significant jet lag.

## Related

- [Angkor International Airport (REP)](https://www.flightduration.online/airport/rep-siem-reap-angkor-international-airport/1ef266df-efb8-691a-a780-06bb2780ed98)
- [Nuevo Aeropuerto Internacional Mariscal Sucre (UIO)](https://www.flightduration.online/airport/uio-quito-nuevo-aeropuerto-internacional-mariscal-sucre/1ef266df-a57c-65f4-aaa1-06bb2780ed98)
- [Flight duration calculator](/#calculator)