# Distance from Graz (GRZ) to Houston (IAH)

> 9,011 km · estimated flight time 12h · Ultra-long-haul route.

## Summary

- **Distance**: 9,011 km / 5,599 mi / 4,866 nm
- **Estimated flight time**: 12h
- **Heading**: 305° (northwest)
- **Return heading**: 40° (northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (Austria) → United States
- **Intercontinental**: Europe → North America
- **Time difference**: -7h (When it's 11:40 in Graz, it's 04:40 in Houston)
- **Elevation difference**: 1,019 ft (IAH is lower than GRZ)

## Airports

### [Graz Airport (GRZ)](https://www.flightduration.online/airport/grz-graz-graz-airport/1ef266df-551b-679a-8338-06bb2780ed98)

- City: Graz, Austria
- ICAO: LOWG
- Timezone: Europe/Vienna
- Coordinates: 46.990000, 15.440000
- Elevation: 1,115 ft

### [George Bush Intcntl/Houston Airport (IAH)](https://www.flightduration.online/airport/iah-houston-george-bush-intcntlhouston-airport/1ef266df-22d4-6822-bae6-06bb2780ed98)

- City: Houston, United States
- ICAO: KIAH
- Timezone: America/Chicago
- Coordinates: 29.980000, -95.340000
- Elevation: 96 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 11:40 in Graz, it's 04:40 in Houston.
With a 7-hour time difference, expect significant jet lag.

## Related

- [Graz Airport (GRZ)](https://www.flightduration.online/airport/grz-graz-graz-airport/1ef266df-551b-679a-8338-06bb2780ed98)
- [George Bush Intcntl/Houston Airport (IAH)](https://www.flightduration.online/airport/iah-houston-george-bush-intcntlhouston-airport/1ef266df-22d4-6822-bae6-06bb2780ed98)
- [Flight duration calculator](/#calculator)