# Distance from Sao Paulo (GRU) to Dayrestan Airport (GSM)

> 12,317 km · estimated flight time 15h · Ultra-long-haul route.

## Summary

- **Distance**: 12,317 km / 7,653 mi / 6,650 nm
- **Estimated flight time**: 15h
- **Heading**: 69° (east northeast)
- **Return heading**: 253° (west southwest)
- **Classification**: Ultra-long-haul
- **Type**: International (Brazil) → Iran
- **Intercontinental**: South America → Asia
- **Time difference**: +6.5h (When it's 18:14 in Sao Paulo, it's 00:44 in Dayrestan Airport)
- **Elevation difference**: 2,414 ft (GSM is lower than GRU)

## Airports

### [Guarulhos - Governador Andre Franco Montoro International Airport (GRU)](https://www.flightduration.online/airport/gru-sao-paulo-guarulhos-governador-andre-franco-montoro-international-airport/1ef266df-9494-6840-af41-06bb2780ed98)

- City: Sao Paulo, Brazil
- ICAO: SBGR
- Timezone: America/Sao_Paulo
- Coordinates: -23.440000, -46.470000
- Elevation: 2,459 ft

### [Dayrestan Airport (GSM)](https://www.flightduration.online/airport/gsm-dayrestan-airport/1ef266df-7dd7-65b2-95bc-06bb2780ed98)

- City: Dayrestan Airport, Iran
- ICAO: OIKQ
- Timezone: Asia/Tehran
- Coordinates: 26.750000, 55.900000
- Elevation: 45 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 18:14 in Sao Paulo, it's 00:44 in Dayrestan Airport.
With a 6.5-hour time difference, expect significant jet lag.

## Related

- [Guarulhos - Governador Andre Franco Montoro International Airport (GRU)](https://www.flightduration.online/airport/gru-sao-paulo-guarulhos-governador-andre-franco-montoro-international-airport/1ef266df-9494-6840-af41-06bb2780ed98)
- [Dayrestan Airport (GSM)](https://www.flightduration.online/airport/gsm-dayrestan-airport/1ef266df-7dd7-65b2-95bc-06bb2780ed98)
- [Flight duration calculator](/#calculator)