# Distance from Ontario (ONT) to Bucharest (OTP)

> 10,534 km · estimated flight time 13h · Ultra-long-haul route.

## Summary

- **Distance**: 10,534 km / 6,546 mi / 5,688 nm
- **Estimated flight time**: 13h
- **Heading**: 25° (north northeast)
- **Return heading**: 331° (north northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Romania
- **Intercontinental**: North America → Europe
- **Time difference**: +10h (When it's 19:02 in Ontario, it's 05:02 in Bucharest)
- **Elevation difference**: 630 ft (OTP is lower 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

### [Henri Coanda International Airport (OTP)](https://www.flightduration.online/airport/otp-bucharest-henri-coanda-international-airport/1ef266df-5682-65f2-900a-06bb2780ed98)

- City: Bucharest, Romania
- ICAO: LROP
- Timezone: Europe/Bucharest
- Coordinates: 44.570000, 26.100000
- Elevation: 314 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 19:02 in Ontario, it's 05:02 in Bucharest.
With a 10-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)
- [Henri Coanda International Airport (OTP)](https://www.flightduration.online/airport/otp-bucharest-henri-coanda-international-airport/1ef266df-5682-65f2-900a-06bb2780ed98)
- [Flight duration calculator](/#calculator)