# Distance from Curitiba (CWB) to Semnan (SNX)

> 12,712 km · estimated flight time 16h · Ultra-long-haul route.

## Summary

- **Distance**: 12,712 km / 7,899 mi / 6,864 nm
- **Estimated flight time**: 16h
- **Heading**: 61° (east northeast)
- **Return heading**: 255° (west southwest)
- **Classification**: Ultra-long-haul
- **Type**: International (Brazil) → Iran
- **Intercontinental**: South America → Asia
- **Time difference**: +6.5h (When it's 22:03 in Curitiba, it's 04:33 in Semnan)
- **Elevation difference**: 677 ft (SNX is higher than CWB)

## Airports

### [Afonso Pena Airport (CWB)](https://www.flightduration.online/airport/cwb-curitiba-afonso-pena-airport/1ef266df-9442-6e5a-a41e-06bb2780ed98)

- City: Curitiba, Brazil
- ICAO: SBCT
- Timezone: America/Sao_Paulo
- Coordinates: -25.530000, -49.180000
- Elevation: 2,988 ft

### [Semnan Airport (SNX)](https://www.flightduration.online/airport/snx-semnan-semnan-airport/1ef266df-7db1-6b28-8f31-06bb2780ed98)

- City: Semnan, Iran
- ICAO: OIIS
- Timezone: Asia/Tehran
- Coordinates: 35.590000, 53.500000
- Elevation: 3,665 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 22:03 in Curitiba, it's 04:33 in Semnan.
With a 6.5-hour time difference, expect significant jet lag.

## Related

- [Afonso Pena Airport (CWB)](https://www.flightduration.online/airport/cwb-curitiba-afonso-pena-airport/1ef266df-9442-6e5a-a41e-06bb2780ed98)
- [Semnan Airport (SNX)](https://www.flightduration.online/airport/snx-semnan-semnan-airport/1ef266df-7db1-6b28-8f31-06bb2780ed98)
- [Flight duration calculator](/#calculator)