# Distance from Dayrestan Airport (GSM) to Ottawa (YOW)

> 10,624 km · estimated flight time 13h · Ultra-long-haul route.

## Summary

- **Distance**: 10,624 km / 6,601 mi / 5,736 nm
- **Estimated flight time**: 13h
- **Heading**: 328° (north northwest)
- **Return heading**: 42° (northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (Iran) → Canada
- **Intercontinental**: Asia → North America
- **Time difference**: -7.5h (When it's 07:31 in Dayrestan Airport, it's 00:01 in Ottawa)
- **Elevation difference**: 329 ft (YOW is higher than GSM)

## Airports

### [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

### [Ottawa / Macdonald-Cartier International Airport (YOW)](https://www.flightduration.online/airport/yow-ottawa-ottawa-macdonald-cartier-international-airport/1ef266de-b189-6992-9daf-06bb2780ed98)

- City: Ottawa, Canada
- ICAO: CYOW
- Timezone: America/Toronto
- Coordinates: 45.320000, -75.670000
- Elevation: 374 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 07:31 in Dayrestan Airport, it's 00:01 in Ottawa.
With a 7.5-hour time difference, expect significant jet lag.

## Related

- [Dayrestan Airport (GSM)](https://www.flightduration.online/airport/gsm-dayrestan-airport/1ef266df-7dd7-65b2-95bc-06bb2780ed98)
- [Ottawa / Macdonald-Cartier International Airport (YOW)](https://www.flightduration.online/airport/yow-ottawa-ottawa-macdonald-cartier-international-airport/1ef266de-b189-6992-9daf-06bb2780ed98)
- [Flight duration calculator](/#calculator)