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

> 5,799 km · estimated flight time 8h · Long-haul route.

## Summary

- **Distance**: 5,799 km / 3,603 mi / 3,131 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 04:35 in Washington, it's 09:35 in Sines Airport)
- **Elevation difference**: 14 ft (SIE is lower than DCA)

## Airports

### [Ronald Reagan Washington Ntl Airport (DCA)](https://www.flightduration.online/airport/dca-washington-ronald-reagan-washington-ntl-airport/1ef266df-16de-6284-ae10-06bb2780ed98)

- City: Washington, United States
- ICAO: KDCA
- Timezone: America/New_York
- Coordinates: 38.850000, -77.040000
- Elevation: 14 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 04:35 in Washington, it's 09:35 in Sines Airport.
The 5-hour time difference may cause some jet lag.

## Related

- [Ronald Reagan Washington Ntl Airport (DCA)](https://www.flightduration.online/airport/dca-washington-ronald-reagan-washington-ntl-airport/1ef266df-16de-6284-ae10-06bb2780ed98)
- [Sines Airport (SIE)](https://www.flightduration.online/airport/sie-sines-airport/1ef266df-55f7-63c6-861d-06bb2780ed98)
- [Flight duration calculator](/#calculator)