# Distance from Washington (IAD) to Sines Airport (SIE)

> 5,834 km · estimated flight time 8h · Long-haul route.

## Summary

- **Distance**: 5,834 km / 3,625 mi / 3,150 nm
- **Estimated flight time**: 8h
- **Heading**: 68° (east northeast)
- **Return heading**: 294° (west northwest)
- **Classification**: Long-haul
- **Type**: International (United States) → Portugal
- **Intercontinental**: North America → Europe
- **Time difference**: +5h (When it's 00:12 in Washington, it's 05:12 in Sines Airport)
- **Elevation difference**: 312 ft (SIE 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

### [Sines Airport (SIE)](https://www.flightduration.online/airport/sie-sines-airport/1ef266df-55f7-63c6-861d-06bb2780ed98)

- City: Sines Airport, Portugal
- ICAO: LPSI
- Timezone: Europe/Lisbon
- Coordinates: 37.940000, -8.820000
- Elevation: 0 ft

## Route notes

This is a long-haul route typically operated by wide-body aircraft such as the Boeing 777 or Airbus A350. Full meal service, in-flight entertainment, and comfort amenities are standard.

Time-zone information: When it's 00:12 in Washington, it's 05:12 in Sines Airport.
The 5-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)
- [Sines Airport (SIE)](https://www.flightduration.online/airport/sie-sines-airport/1ef266df-55f7-63c6-861d-06bb2780ed98)
- [Flight duration calculator](/#calculator)