# Distance from Seattle (SEA) to Tsiroanomandidy (WTS)

> 16,654 km · estimated flight time 21h · Ultra-long-haul route.

## Summary

- **Distance**: 16,654 km / 10,349 mi / 8,993 nm
- **Estimated flight time**: 21h
- **Heading**: 22° (north northeast)
- **Return heading**: 344° (north northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Madagascar
- **Intercontinental**: North America → Africa
- **Time difference**: +10h (When it's 15:28 in Seattle, it's 01:28 in Tsiroanomandidy)
- **Elevation difference**: 2,344 ft (WTS is higher 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

### [Tsiroanomandidy Airport (WTS)](https://www.flightduration.online/airport/wts-tsiroanomandidy-tsiroanomandidy-airport/1ef266de-dbbd-6dd0-993c-06bb2780ed98)

- City: Tsiroanomandidy, Madagascar
- ICAO: FMMX
- Timezone: Indian/Antananarivo
- Coordinates: -18.760000, 46.050000
- Elevation: 2,776 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 15:28 in Seattle, it's 01:28 in Tsiroanomandidy.
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)
- [Tsiroanomandidy Airport (WTS)](https://www.flightduration.online/airport/wts-tsiroanomandidy-tsiroanomandidy-airport/1ef266de-dbbd-6dd0-993c-06bb2780ed98)
- [Flight duration calculator](/#calculator)