# Distance from Long Semado (LSM) to Seattle (SEA)

> 11,976 km · estimated flight time 15h · Ultra-long-haul route.

## Summary

- **Distance**: 11,976 km / 7,441 mi / 6,466 nm
- **Estimated flight time**: 15h
- **Heading**: 37° (northeast)
- **Return heading**: 298° (west northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (Malaysia) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -15h (When it's 03:53 in Long Semado, it's 12:53 in Seattle)
- **Elevation difference**: 1,718 ft (SEA is lower than LSM)

## Airports

### [Long Semado Airport (LSM)](https://www.flightduration.online/airport/lsm-long-semado-long-semado-airport/1ef266df-fb1e-61d8-aead-06bb2780ed98)

- City: Long Semado, Malaysia
- ICAO: WBGD
- Timezone: Asia/Kuching
- Coordinates: 4.220000, 115.600000
- Elevation: 2,150 ft

### [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

## 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 03:53 in Long Semado, it's 12:53 in Seattle.
With a 15-hour time difference, expect significant jet lag.

## Related

- [Long Semado Airport (LSM)](https://www.flightduration.online/airport/lsm-long-semado-long-semado-airport/1ef266df-fb1e-61d8-aead-06bb2780ed98)
- [Seattle-Tacoma International Airport (SEA)](https://www.flightduration.online/airport/sea-seattle-seattle-tacoma-international-airport/1ef266df-37e8-64a2-a4f1-06bb2780ed98)
- [Flight duration calculator](/#calculator)