# Distance from Cluj-Napoca (CLJ) to Denver (DEN)

> 9,106 km · estimated flight time 12h · Ultra-long-haul route.

## Summary

- **Distance**: 9,106 km / 5,658 mi / 4,917 nm
- **Estimated flight time**: 12h
- **Heading**: 323° (northwest)
- **Return heading**: 33° (north northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (Romania) → United States
- **Intercontinental**: Europe → North America
- **Time difference**: -9h (When it's 10:46 in Cluj-Napoca, it's 01:46 in Denver)
- **Elevation difference**: 4,398 ft (DEN is higher than CLJ)

## Airports

### [Cluj-Napoca International Airport (CLJ)](https://www.flightduration.online/airport/clj-cluj-napoca-cluj-napoca-international-airport/1ef266df-5669-6e44-bf56-06bb2780ed98)

- City: Cluj-Napoca, Romania
- ICAO: LRCL
- Timezone: Europe/Bucharest
- Coordinates: 46.790000, 23.690000
- Elevation: 1,036 ft

### [Denver International Airport (DEN)](https://www.flightduration.online/airport/den-denver-denver-international-airport/1ef266df-1706-67b6-bf3a-06bb2780ed98)

- City: Denver, United States
- ICAO: KDEN
- Timezone: America/Denver
- Coordinates: 39.860000, -104.670000
- Elevation: 5,434 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 10:46 in Cluj-Napoca, it's 01:46 in Denver.
With a 9-hour time difference, expect significant jet lag.

## Related

- [Cluj-Napoca International Airport (CLJ)](https://www.flightduration.online/airport/clj-cluj-napoca-cluj-napoca-international-airport/1ef266df-5669-6e44-bf56-06bb2780ed98)
- [Denver International Airport (DEN)](https://www.flightduration.online/airport/den-denver-denver-international-airport/1ef266df-1706-67b6-bf3a-06bb2780ed98)
- [Flight duration calculator](/#calculator)