# Distance from Denis Island (DEI) to Washington (IAD)

> 13,894 km · estimated flight time 17h · Ultra-long-haul route.

## Summary

- **Distance**: 13,894 km / 8,633 mi / 7,502 nm
- **Estimated flight time**: 17h
- **Heading**: 316° (northwest)
- **Return heading**: 63° (east northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (Seychelles) → United States
- **Intercontinental**: Africa → North America
- **Time difference**: -8h (When it's 11:30 in Denis Island, it's 03:30 in Washington)
- **Elevation difference**: 302 ft (IAD is higher than DEI)

## Airports

### [Denis Island Airport (DEI)](https://www.flightduration.online/airport/dei-denis-island-denis-island-airport/1ef266de-de1d-6a3a-8565-06bb2780ed98)

- City: Denis Island, Seychelles
- ICAO: FSSD
- Timezone: Indian/Mahe
- Coordinates: -3.800000, 55.670000
- Elevation: 10 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 11:30 in Denis Island, it's 03:30 in Washington.
With a 8-hour time difference, expect significant jet lag.

## Related

- [Denis Island Airport (DEI)](https://www.flightduration.online/airport/dei-denis-island-denis-island-airport/1ef266de-de1d-6a3a-8565-06bb2780ed98)
- [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)