# Distance from Baltimore (BWI) to Na Thon (Ko Samui Island) (USM)

> 14,586 km · estimated flight time 18h · Ultra-long-haul route.

## Summary

- **Distance**: 14,586 km / 9,063 mi / 7,876 nm
- **Estimated flight time**: 18h
- **Heading**: 4° (north)
- **Return heading**: 357° (north)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Thailand
- **Intercontinental**: North America → Asia
- **Time difference**: +11h (When it's 19:24 in Baltimore, it's 06:24 in Na Thon (Ko Samui Island))
- **Elevation difference**: 79 ft (USM is lower than BWI)

## Airports

### [Baltimore/Washington International Thurgood Marshall Airport (BWI)](https://www.flightduration.online/airport/bwi-baltimore-baltimorewashington-international-thurgood-marshall-airport/1ef266df-11dd-6712-b7b5-06bb2780ed98)

- City: Baltimore, United States
- ICAO: KBWI
- Timezone: America/New_York
- Coordinates: 39.180000, -76.670000
- Elevation: 143 ft

### [Samui Airport (USM)](https://www.flightduration.online/airport/usm-na-thon-ko-samui-island-samui-airport/1ef266df-f5a3-6c12-8349-06bb2780ed98)

- City: Na Thon (Ko Samui Island), Thailand
- ICAO: VTSM
- Timezone: Asia/Bangkok
- Coordinates: 9.550000, 100.060000
- Elevation: 64 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 19:24 in Baltimore, it's 06:24 in Na Thon (Ko Samui Island).
With a 11-hour time difference, expect significant jet lag.

## Related

- [Baltimore/Washington International Thurgood Marshall Airport (BWI)](https://www.flightduration.online/airport/bwi-baltimore-baltimorewashington-international-thurgood-marshall-airport/1ef266df-11dd-6712-b7b5-06bb2780ed98)
- [Samui Airport (USM)](https://www.flightduration.online/airport/usm-na-thon-ko-samui-island-samui-airport/1ef266df-f5a3-6c12-8349-06bb2780ed98)
- [Flight duration calculator](/#calculator)