# Distance from Seattle (SEA) to Tanandava (TDV)

> 16,891 km · estimated flight time 21h · Ultra-long-haul route.

## Summary

- **Distance**: 16,891 km / 10,495 mi / 9,120 nm
- **Estimated flight time**: 21h
- **Heading**: 28° (north northeast)
- **Return heading**: 340° (north northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Madagascar
- **Intercontinental**: North America → Africa
- **Time difference**: +10h (When it's 15:51 in Seattle, it's 01:51 in Tanandava)
- **Elevation difference**: 343 ft (TDV 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

### [Samangoky Airport (TDV)](https://www.flightduration.online/airport/tdv-tanandava-samangoky-airport/1ef266de-dc4e-665a-a4a5-06bb2780ed98)

- City: Tanandava, Madagascar
- ICAO: FMSN
- Timezone: Indian/Antananarivo
- Coordinates: -21.700000, 43.730000
- Elevation: 89 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 15:51 in Seattle, it's 01:51 in Tanandava.
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)
- [Samangoky Airport (TDV)](https://www.flightduration.online/airport/tdv-tanandava-samangoky-airport/1ef266de-dc4e-665a-a4a5-06bb2780ed98)
- [Flight duration calculator](/#calculator)