# Distance from Ontario (ONT) to Prague (PRG)

> 9,529 km · estimated flight time 12h · Ultra-long-haul route.

## Summary

- **Distance**: 9,529 km / 5,921 mi / 5,145 nm
- **Estimated flight time**: 12h
- **Heading**: 29° (north northeast)
- **Return heading**: 322° (northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Czech Republic
- **Intercontinental**: North America → Europe
- **Time difference**: +9h (When it's 01:26 in Ontario, it's 10:26 in Prague)
- **Elevation difference**: 303 ft (PRG is higher than ONT)

## Airports

### [Ontario International Airport (ONT)](https://www.flightduration.online/airport/ont-ontario-ontario-international-airport/1ef266df-30d9-6922-9430-06bb2780ed98)

- City: Ontario, United States
- ICAO: KONT
- Timezone: America/Los_Angeles
- Coordinates: 34.060000, -117.600000
- Elevation: 944 ft

### [Václav Havel Airport (PRG)](https://www.flightduration.online/airport/prg-prague-vaclav-havel-airport/1ef266df-52bc-60da-a00a-06bb2780ed98)

- City: Prague, Czech Republic
- ICAO: LKPR
- Timezone: Europe/Prague
- Coordinates: 50.100000, 14.260000
- Elevation: 1,247 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 01:26 in Ontario, it's 10:26 in Prague.
With a 9-hour time difference, expect significant jet lag.

## Related

- [Ontario International Airport (ONT)](https://www.flightduration.online/airport/ont-ontario-ontario-international-airport/1ef266df-30d9-6922-9430-06bb2780ed98)
- [Václav Havel Airport (PRG)](https://www.flightduration.online/airport/prg-prague-vaclav-havel-airport/1ef266df-52bc-60da-a00a-06bb2780ed98)
- [Flight duration calculator](/#calculator)