# Distance from Dezful Airport (DEF) to Chicago (ORD)

> 10,614 km · estimated flight time 13h · Ultra-long-haul route.

## Summary

- **Distance**: 10,614 km / 6,595 mi / 5,731 nm
- **Estimated flight time**: 13h
- **Heading**: 329° (north northwest)
- **Return heading**: 36° (northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (Iran) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -8.5h (When it's 00:01 in Dezful Airport, it's 15:31 in Chicago)
- **Elevation difference**: 206 ft (ORD is higher than DEF)

## Airports

### [Dezful Airport (DEF)](https://www.flightduration.online/airport/def-dezful-airport/1ef266df-7cbf-679c-95be-06bb2780ed98)

- City: Dezful Airport, Iran
- ICAO: OIAD
- Timezone: Asia/Tehran
- Coordinates: 32.430000, 48.400000
- Elevation: 474 ft

### [Chicago O'Hare International Airport (ORD)](https://www.flightduration.online/airport/ord-chicago-chicago-ohare-international-airport/1ef266df-3115-6742-b012-06bb2780ed98)

- City: Chicago, United States
- ICAO: KORD
- Timezone: America/Chicago
- Coordinates: 41.980000, -87.910000
- Elevation: 680 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 00:01 in Dezful Airport, it's 15:31 in Chicago.
With a 8.5-hour time difference, expect significant jet lag.

## Related

- [Dezful Airport (DEF)](https://www.flightduration.online/airport/def-dezful-airport/1ef266df-7cbf-679c-95be-06bb2780ed98)
- [Chicago O'Hare International Airport (ORD)](https://www.flightduration.online/airport/ord-chicago-chicago-ohare-international-airport/1ef266df-3115-6742-b012-06bb2780ed98)
- [Flight duration calculator](/#calculator)