# Distance from Denver (DEN) to Ulan Bator (ULN)

> 9,781 km · estimated flight time 13h · Ultra-long-haul route.

## Summary

- **Distance**: 9,781 km / 6,078 mi / 5,281 nm
- **Estimated flight time**: 13h
- **Heading**: 339° (north northwest)
- **Return heading**: 24° (north northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Mongolia
- **Intercontinental**: North America → Asia
- **Time difference**: +14h (When it's 13:50 in Denver, it's 03:50 in Ulan Bator)
- **Elevation difference**: 1,070 ft (ULN is lower than DEN)

## Airports

### [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

### [Buyant-Ukhaa International Airport (ULN)](https://www.flightduration.online/airport/uln-ulan-bator-buyant-ukhaa-international-airport/1ef266e0-1f91-688a-a773-06bb2780ed98)

- City: Ulan Bator, Mongolia
- ICAO: ZMUB
- Timezone: Asia/Ulaanbaatar
- Coordinates: 47.840000, 106.770000
- Elevation: 4,364 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 13:50 in Denver, it's 03:50 in Ulan Bator.
With a 14-hour time difference, expect significant jet lag.

## Related

- [Denver International Airport (DEN)](https://www.flightduration.online/airport/den-denver-denver-international-airport/1ef266df-1706-67b6-bf3a-06bb2780ed98)
- [Buyant-Ukhaa International Airport (ULN)](https://www.flightduration.online/airport/uln-ulan-bator-buyant-ukhaa-international-airport/1ef266e0-1f91-688a-a773-06bb2780ed98)
- [Flight duration calculator](/#calculator)