# Distance from Seattle (SEA) to Southend (SEN)

> 7,742 km · estimated flight time 10h · Long-haul route.

## Summary

- **Distance**: 7,742 km / 4,811 mi / 4,180 nm
- **Estimated flight time**: 10h
- **Heading**: 34° (northeast)
- **Return heading**: 323° (northwest)
- **Classification**: Long-haul
- **Type**: International (United States) → United Kingdom
- **Intercontinental**: North America → Europe
- **Time difference**: +8h (When it's 11:21 in Seattle, it's 19:21 in Southend)
- **Elevation difference**: 383 ft (SEN is lower than SEA)

## Airports

### [Seattle-Tacoma International Airport (SEA)](https://www.flightduration.online/airport/sea-seattle-seattle-tacoma-international-airport/1ef266df-37e8-64a2-a4f1-06bb2780ed98)

- City: Seattle, United States
- ICAO: KSEA
- Timezone: America/Los_Angeles
- Coordinates: 47.450000, -122.310000
- Elevation: 432 ft

### [Southend Airport (SEN)](https://www.flightduration.online/airport/sen-southend-southend-airport/1ef266de-c471-617c-a9f1-06bb2780ed98)

- City: Southend, United Kingdom
- ICAO: EGMC
- Timezone: Europe/London
- Coordinates: 51.570000, 0.700000
- Elevation: 49 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 11:21 in Seattle, it's 19:21 in Southend.
With a 8-hour time difference, expect significant jet lag.

## Related

- [Seattle-Tacoma International Airport (SEA)](https://www.flightduration.online/airport/sea-seattle-seattle-tacoma-international-airport/1ef266df-37e8-64a2-a4f1-06bb2780ed98)
- [Southend Airport (SEN)](https://www.flightduration.online/airport/sen-southend-southend-airport/1ef266de-c471-617c-a9f1-06bb2780ed98)
- [Flight duration calculator](/#calculator)