# Distance from Clayton (CAO) to Bucharest (OTP)

> 9,661 km · estimated flight time 12h · Ultra-long-haul route.

## Summary

- **Distance**: 9,661 km / 6,003 mi / 5,216 nm
- **Estimated flight time**: 12h
- **Heading**: 34° (north northeast)
- **Return heading**: 321° (northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Romania
- **Intercontinental**: North America → Europe
- **Time difference**: +9h (When it's 13:30 in Clayton, it's 22:30 in Bucharest)
- **Elevation difference**: 4,656 ft (OTP is lower than CAO)

## Airports

### [Clayton Municipal Airpark (CAO)](https://www.flightduration.online/airport/cao-clayton-clayton-municipal-airpark/1ef266df-1303-6cfe-b7f8-06bb2780ed98)

- City: Clayton, United States
- ICAO: KCAO
- Timezone: America/Denver
- Coordinates: 36.450000, -103.150000
- Elevation: 4,970 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 13:30 in Clayton, it's 22:30 in Bucharest.
With a 9-hour time difference, expect significant jet lag.

## Related

- [Clayton Municipal Airpark (CAO)](https://www.flightduration.online/airport/cao-clayton-clayton-municipal-airpark/1ef266df-1303-6cfe-b7f8-06bb2780ed98)
- [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)