# Distance from Houston (IAH) to Castries (SLU)

> 3,939 km · estimated flight time 6h · Medium-haul route.

## Summary

- **Distance**: 3,939 km / 2,448 mi / 2,127 nm
- **Estimated flight time**: 6h
- **Heading**: 109° (east southeast)
- **Return heading**: 303° (west northwest)
- **Classification**: Medium-haul
- **Type**: International (United States) → Saint Lucia
- **Time difference**: +1h (When it's 15:56 in Houston, it's 16:56 in Castries)
- **Elevation difference**: 74 ft (SLU is lower 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

### [George F. L. Charles Airport (SLU)](https://www.flightduration.online/airport/slu-castries-george-f-l-charles-airport/1ef266df-e048-6ec6-bfdb-06bb2780ed98)

- City: Castries, Saint Lucia
- ICAO: TLPC
- Timezone: America/St_Lucia
- Coordinates: 14.020000, -60.990000
- Elevation: 22 ft

## Route notes

This is a medium-haul route that may be operated by either narrow-body or wide-body aircraft depending on demand. Passengers can expect a meal service on most carriers.

Time-zone information: When it's 15:56 in Houston, it's 16:56 in Castries.

## Related

- [George Bush Intcntl/Houston Airport (IAH)](https://www.flightduration.online/airport/iah-houston-george-bush-intcntlhouston-airport/1ef266df-22d4-6822-bae6-06bb2780ed98)
- [George F. L. Charles Airport (SLU)](https://www.flightduration.online/airport/slu-castries-george-f-l-charles-airport/1ef266df-e048-6ec6-bfdb-06bb2780ed98)
- [Flight duration calculator](/#calculator)