# Distance from Seattle (SEA) to Sainte Marie Airport (SMS)

> 16,563 km · estimated flight time 20h · Ultra-long-haul route.

## Summary

- **Distance**: 16,563 km / 10,292 mi / 8,943 nm
- **Estimated flight time**: 20h
- **Heading**: 15° (north northeast)
- **Return heading**: 350° (north)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Madagascar
- **Intercontinental**: North America → Africa
- **Time difference**: +10h (When it's 18:09 in Seattle, it's 04:09 in Sainte Marie Airport)
- **Elevation difference**: 425 ft (SMS 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

### [Sainte Marie Airport (SMS)](https://www.flightduration.online/airport/sms-sainte-marie-airport/1ef266de-dbae-675e-9a15-06bb2780ed98)

- City: Sainte Marie Airport, Madagascar
- ICAO: FMMS
- Timezone: Indian/Antananarivo
- Coordinates: -17.090000, 49.820000
- Elevation: 7 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 18:09 in Seattle, it's 04:09 in Sainte Marie Airport.
With a 10-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)
- [Sainte Marie Airport (SMS)](https://www.flightduration.online/airport/sms-sainte-marie-airport/1ef266de-dbae-675e-9a15-06bb2780ed98)
- [Flight duration calculator](/#calculator)