# Distance from Grand-Santi (GSI) to Kathmandu (KTM)

> 14,423 km · estimated flight time 18h · Ultra-long-haul route.

## Summary

- **Distance**: 14,423 km / 8,962 mi / 7,788 nm
- **Estimated flight time**: 18h
- **Heading**: 48° (northeast)
- **Return heading**: 303° (west northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (GF) → Nepal
- **Intercontinental**: South America → Asia
- **Time difference**: +8.75h (When it's 08:03 in Grand-Santi, it's 16:48 in Kathmandu)
- **Elevation difference**: 4,183 ft (KTM is higher than GSI)

## Airports

### [Grand-Santi Airport (GSI)](https://www.flightduration.online/airport/gsi-grand-santi-grand-santi-airport/1ef266df-c2f6-65b2-9095-06bb2780ed98)

- City: Grand-Santi, GF
- ICAO: SOGS
- Timezone: America/Cayenne
- Coordinates: 4.290000, -54.370000
- Elevation: 207 ft

### [Tribhuvan International Airport (KTM)](https://www.flightduration.online/airport/ktm-kathmandu-tribhuvan-international-airport/1ef266df-f304-6ec0-afd1-06bb2780ed98)

- City: Kathmandu, Nepal
- ICAO: VNKT
- Timezone: Asia/Kathmandu
- Coordinates: 27.700000, 85.360000
- Elevation: 4,390 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 08:03 in Grand-Santi, it's 16:48 in Kathmandu.
With a 8.75-hour time difference, expect significant jet lag.

## Related

- [Grand-Santi Airport (GSI)](https://www.flightduration.online/airport/gsi-grand-santi-grand-santi-airport/1ef266df-c2f6-65b2-9095-06bb2780ed98)
- [Tribhuvan International Airport (KTM)](https://www.flightduration.online/airport/ktm-kathmandu-tribhuvan-international-airport/1ef266df-f304-6ec0-afd1-06bb2780ed98)
- [Flight duration calculator](/#calculator)