# Distance from Washington (IAD) to Sao Tome (TMS)

> 9,480 km · estimated flight time 12h · Ultra-long-haul route.

## Summary

- **Distance**: 9,480 km / 5,891 mi / 5,119 nm
- **Estimated flight time**: 12h
- **Heading**: 93° (east)
- **Return heading**: 309° (northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → São Tomé and Príncipe
- **Intercontinental**: North America → Africa
- **Time difference**: +4h (When it's 01:59 in Washington, it's 05:59 in Sao Tome)
- **Elevation difference**: 279 ft (TMS is lower 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

### [Sao Tome International Airport (TMS)](https://www.flightduration.online/airport/tms-sao-tome-sao-tome-international-airport/1ef266de-dd85-69c4-ae5d-06bb2780ed98)

- City: Sao Tome, São Tomé and Príncipe
- ICAO: FPST
- Timezone: Africa/Sao_Tome
- Coordinates: 0.380000, 6.710000
- Elevation: 33 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 01:59 in Washington, it's 05:59 in Sao Tome.
The 4-hour time difference may cause some jet lag.

## Related

- [Washington Dulles International Airport (IAD)](https://www.flightduration.online/airport/iad-washington-washington-dulles-international-airport/1ef266df-22cc-64e2-b8c0-06bb2780ed98)
- [Sao Tome International Airport (TMS)](https://www.flightduration.online/airport/tms-sao-tome-sao-tome-international-airport/1ef266de-dd85-69c4-ae5d-06bb2780ed98)
- [Flight duration calculator](/#calculator)