# Distance from Boston (BOS) to Sines Airport (SIE)

> 5,190 km · estimated flight time 7h · Long-haul route.

## Summary

- **Distance**: 5,190 km / 3,225 mi / 2,802 nm
- **Estimated flight time**: 7h
- **Heading**: 74° (east northeast)
- **Return heading**: 296° (west northwest)
- **Classification**: Long-haul
- **Type**: International (United States) → Portugal
- **Intercontinental**: North America → Europe
- **Time difference**: +5h (When it's 22:01 in Boston, it's 03:01 in Sines Airport)
- **Elevation difference**: 19 ft (SIE is lower than BOS)

## Airports

### [General Edward Lawrence Logan International Airport (BOS)](https://www.flightduration.online/airport/bos-boston-general-edward-lawrence-logan-international-airport/1ef266df-112a-6798-90da-06bb2780ed98)

- City: Boston, United States
- ICAO: KBOS
- Timezone: America/New_York
- Coordinates: 42.360000, -71.010000
- Elevation: 19 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 22:01 in Boston, it's 03:01 in Sines Airport.
The 5-hour time difference may cause some jet lag.

## Related

- [General Edward Lawrence Logan International Airport (BOS)](https://www.flightduration.online/airport/bos-boston-general-edward-lawrence-logan-international-airport/1ef266df-112a-6798-90da-06bb2780ed98)
- [Sines Airport (SIE)](https://www.flightduration.online/airport/sie-sines-airport/1ef266df-55f7-63c6-861d-06bb2780ed98)
- [Flight duration calculator](/#calculator)