# Distance from Washington (IAD) to Ban Huoeisay Airport (OUI)

> 13,433 km · estimated flight time 17h · Ultra-long-haul route.

## Summary

- **Distance**: 13,433 km / 8,347 mi / 7,253 nm
- **Estimated flight time**: 17h
- **Heading**: 2° (north)
- **Return heading**: 358° (north)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Laos
- **Intercontinental**: North America → Asia
- **Time difference**: +11h (When it's 10:19 in Washington, it's 21:19 in Ban Huoeisay Airport)
- **Elevation difference**: 1,068 ft (OUI 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

### [Ban Huoeisay Airport (OUI)](https://www.flightduration.online/airport/oui-ban-huoeisay-airport/1ef266df-f277-6980-89e5-06bb2780ed98)

- City: Ban Huoeisay Airport, Laos
- ICAO: VLHS
- Timezone: Asia/Vientiane
- Coordinates: 20.260000, 100.440000
- Elevation: 1,380 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 10:19 in Washington, it's 21:19 in Ban Huoeisay Airport.
With a 11-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)
- [Ban Huoeisay Airport (OUI)](https://www.flightduration.online/airport/oui-ban-huoeisay-airport/1ef266df-f277-6980-89e5-06bb2780ed98)
- [Flight duration calculator](/#calculator)