# Distance from Santa Isabel Do Rio Negro (IRZ) to Kathmandu (KTM)

> 15,638 km · estimated flight time 19h · Ultra-long-haul route.

## Summary

- **Distance**: 15,638 km / 9,717 mi / 8,444 nm
- **Estimated flight time**: 19h
- **Heading**: 44° (northeast)
- **Return heading**: 309° (northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (Brazil) → Nepal
- **Intercontinental**: South America → Asia
- **Time difference**: +9.75h (When it's 20:56 in Santa Isabel Do Rio Negro, it's 06:41 in Kathmandu)
- **Elevation difference**: 4,167 ft (KTM is higher than IRZ)

## Airports

### [Tapuruquara Airport (IRZ)](https://flightduration.online/airport/irz-santa-isabel-do-rio-negro-tapuruquara-airport/1ef266df-db8b-6eba-baeb-06bb2780ed98)

- City: Santa Isabel Do Rio Negro, Brazil
- ICAO: SWTP
- Timezone: America/Manaus
- Coordinates: -0.420000, -65.030000
- Elevation: 223 ft

### [Tribhuvan International Airport (KTM)](https://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 20:56 in Santa Isabel Do Rio Negro, it's 06:41 in Kathmandu.
With a 9.75-hour time difference, expect significant jet lag.

## Related

- [Tapuruquara Airport (IRZ)](https://flightduration.online/airport/irz-santa-isabel-do-rio-negro-tapuruquara-airport/1ef266df-db8b-6eba-baeb-06bb2780ed98)
- [Tribhuvan International Airport (KTM)](https://flightduration.online/airport/ktm-kathmandu-tribhuvan-international-airport/1ef266df-f304-6ec0-afd1-06bb2780ed98)
- [Flight duration calculator](/#calculator)