# Distance from Dezful Airport (DEF) to Washington (IAD)

> 10,316 km · estimated flight time 13h · Ultra-long-haul route.

## Summary

- **Distance**: 10,316 km / 6,410 mi / 5,570 nm
- **Estimated flight time**: 13h
- **Heading**: 321° (northwest)
- **Return heading**: 43° (northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (Iran) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -7.5h (When it's 00:06 in Dezful Airport, it's 16:36 in Washington)
- **Elevation difference**: 162 ft (IAD is lower 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

### [Washington Dulles International Airport (IAD)](https://www.flightduration.online/airport/iad-washington-washington-dulles-international-airport/1ef266df-22cc-64e2-b8c0-06bb2780ed98)

- City: Washington, United States
- ICAO: KIAD
- Timezone: America/New_York
- Coordinates: 38.900000, -77.500000
- Elevation: 312 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 00:06 in Dezful Airport, it's 16:36 in Washington.
With a 7.5-hour time difference, expect significant jet lag.

## Related

- [Dezful Airport (DEF)](https://www.flightduration.online/airport/def-dezful-airport/1ef266df-7cbf-679c-95be-06bb2780ed98)
- [Washington Dulles International Airport (IAD)](https://www.flightduration.online/airport/iad-washington-washington-dulles-international-airport/1ef266df-22cc-64e2-b8c0-06bb2780ed98)
- [Flight duration calculator](/#calculator)