# Distance from Kathmandu (KTM) to Santa Maria (RIA)

> 16,036 km · estimated flight time 20h · Ultra-long-haul route.

## Summary

- **Distance**: 16,036 km / 9,964 mi / 8,659 nm
- **Estimated flight time**: 20h
- **Heading**: 257° (west southwest)
- **Return heading**: 83° (east)
- **Classification**: Ultra-long-haul
- **Type**: International (Nepal) → Brazil
- **Intercontinental**: Asia → South America
- **Time difference**: -8.75h (When it's 23:10 in Kathmandu, it's 14:25 in Santa Maria)
- **Elevation difference**: 4,103 ft (RIA is lower than KTM)

## Airports

### [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

### [Santa Maria Airport (RIA)](https://www.flightduration.online/airport/ria-santa-maria-santa-maria-airport/1ef266df-959f-6d66-9687-06bb2780ed98)

- City: Santa Maria, Brazil
- ICAO: SBSM
- Timezone: America/Sao_Paulo
- Coordinates: -29.710000, -53.690000
- Elevation: 287 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 23:10 in Kathmandu, it's 14:25 in Santa Maria.
With a 8.75-hour time difference, expect significant jet lag.

## Related

- [Tribhuvan International Airport (KTM)](https://www.flightduration.online/airport/ktm-kathmandu-tribhuvan-international-airport/1ef266df-f304-6ec0-afd1-06bb2780ed98)
- [Santa Maria Airport (RIA)](https://www.flightduration.online/airport/ria-santa-maria-santa-maria-airport/1ef266df-959f-6d66-9687-06bb2780ed98)
- [Flight duration calculator](/#calculator)