# Distance from Nakhon Pathom (KDT) to St Louis (STL)

> 14,042 km · estimated flight time 18h · Ultra-long-haul route.

## Summary

- **Distance**: 14,042 km / 8,725 mi / 7,582 nm
- **Estimated flight time**: 18h
- **Heading**: 10° (north)
- **Return heading**: 348° (north northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (Thailand) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -12h (When it's 09:21 in Nakhon Pathom, it's 21:21 in St Louis)
- **Elevation difference**: 587 ft (STL is higher than KDT)

## Airports

### [Kamphaeng Saen Airport (KDT)](https://www.flightduration.online/airport/kdt-nakhon-pathom-kamphaeng-saen-airport/1ef266df-f4fc-64f8-a7f4-06bb2780ed98)

- City: Nakhon Pathom, Thailand
- ICAO: VTBK
- Timezone: Asia/Bangkok
- Coordinates: 14.100000, 99.920000
- Elevation: 30 ft

### [St Louis Lambert International Airport (STL)](https://www.flightduration.online/airport/stl-st-louis-st-louis-lambert-international-airport/1ef266df-39ab-67da-9abe-06bb2780ed98)

- City: St Louis, United States
- ICAO: KSTL
- Timezone: America/Chicago
- Coordinates: 38.750000, -90.370000
- Elevation: 617 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 09:21 in Nakhon Pathom, it's 21:21 in St Louis.
With a 12-hour time difference, expect significant jet lag.

## Related

- [Kamphaeng Saen Airport (KDT)](https://www.flightduration.online/airport/kdt-nakhon-pathom-kamphaeng-saen-airport/1ef266df-f4fc-64f8-a7f4-06bb2780ed98)
- [St Louis Lambert International Airport (STL)](https://www.flightduration.online/airport/stl-st-louis-st-louis-lambert-international-airport/1ef266df-39ab-67da-9abe-06bb2780ed98)
- [Flight duration calculator](/#calculator)