# Distance from Washington (IAD) to Nduli (IRI)

> 12,548 km · estimated flight time 16h · Ultra-long-haul route.

## Summary

- **Distance**: 12,548 km / 7,797 mi / 6,775 nm
- **Estimated flight time**: 16h
- **Heading**: 81° (east)
- **Return heading**: 309° (northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Tanzania
- **Intercontinental**: North America → Africa
- **Time difference**: +7h (When it's 03:25 in Washington, it's 10:25 in Nduli)
- **Elevation difference**: 4,366 ft (IRI is higher than IAD)

## Airports

### [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

### [Iringa Airport (IRI)](https://www.flightduration.online/airport/iri-nduli-iringa-airport/1ef266de-ee8c-6088-8bbf-06bb2780ed98)

- City: Nduli, Tanzania
- ICAO: HTIR
- Timezone: Africa/Dar_es_Salaam
- Coordinates: -7.670000, 35.750000
- Elevation: 4,678 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 03:25 in Washington, it's 10:25 in Nduli.
With a 7-hour time difference, expect significant jet lag.

## Related

- [Washington Dulles International Airport (IAD)](https://www.flightduration.online/airport/iad-washington-washington-dulles-international-airport/1ef266df-22cc-64e2-b8c0-06bb2780ed98)
- [Iringa Airport (IRI)](https://www.flightduration.online/airport/iri-nduli-iringa-airport/1ef266de-ee8c-6088-8bbf-06bb2780ed98)
- [Flight duration calculator](/#calculator)