# Distance from Houston (IAH) to Parapat-Sumatra Island (SIW)

> 16,081 km · estimated flight time 20h · Ultra-long-haul route.

## Summary

- **Distance**: 16,081 km / 9,992 mi / 8,683 nm
- **Estimated flight time**: 20h
- **Heading**: 335° (north northwest)
- **Return heading**: 22° (north northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Indonesia
- **Intercontinental**: North America → Asia
- **Time difference**: +12h (When it's 04:01 in Houston, it's 16:01 in Parapat-Sumatra Island)
- **Elevation difference**: 2,985 ft (SIW is higher than IAH)

## Airports

### [George Bush Intcntl/Houston Airport (IAH)](https://www.flightduration.online/airport/iah-houston-george-bush-intcntlhouston-airport/1ef266df-22d4-6822-bae6-06bb2780ed98)

- City: Houston, United States
- ICAO: KIAH
- Timezone: America/Chicago
- Coordinates: 29.980000, -95.340000
- Elevation: 96 ft

### [Parapat Airport (SIW)](https://www.flightduration.online/airport/siw-parapat-sumatra-island-parapat-airport/1ef266df-fd72-6db2-b9aa-06bb2780ed98)

- City: Parapat-Sumatra Island, Indonesia
- ICAO: WIMP
- Timezone: Asia/Jakarta
- Coordinates: 2.670000, 98.930000
- Elevation: 3,081 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 04:01 in Houston, it's 16:01 in Parapat-Sumatra Island.
With a 12-hour time difference, expect significant jet lag.

## Related

- [George Bush Intcntl/Houston Airport (IAH)](https://www.flightduration.online/airport/iah-houston-george-bush-intcntlhouston-airport/1ef266df-22d4-6822-bae6-06bb2780ed98)
- [Parapat Airport (SIW)](https://www.flightduration.online/airport/siw-parapat-sumatra-island-parapat-airport/1ef266df-fd72-6db2-b9aa-06bb2780ed98)
- [Flight duration calculator](/#calculator)