# Distance from Denis Island (DEI) to Chicago (ORD)

> 14,442 km · estimated flight time 18h · Ultra-long-haul route.

## Summary

- **Distance**: 14,442 km / 8,974 mi / 7,798 nm
- **Estimated flight time**: 18h
- **Heading**: 325° (northwest)
- **Return heading**: 51° (northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (Seychelles) → United States
- **Intercontinental**: Africa → North America
- **Time difference**: -9h (When it's 21:48 in Denis Island, it's 12:48 in Chicago)
- **Elevation difference**: 670 ft (ORD is higher than DEI)

## Airports

### [Denis Island Airport (DEI)](https://www.flightduration.online/airport/dei-denis-island-denis-island-airport/1ef266de-de1d-6a3a-8565-06bb2780ed98)

- City: Denis Island, Seychelles
- ICAO: FSSD
- Timezone: Indian/Mahe
- Coordinates: -3.800000, 55.670000
- Elevation: 10 ft

### [Chicago O'Hare International Airport (ORD)](https://www.flightduration.online/airport/ord-chicago-chicago-ohare-international-airport/1ef266df-3115-6742-b012-06bb2780ed98)

- City: Chicago, United States
- ICAO: KORD
- Timezone: America/Chicago
- Coordinates: 41.980000, -87.910000
- Elevation: 680 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 21:48 in Denis Island, it's 12:48 in Chicago.
With a 9-hour time difference, expect significant jet lag.

## Related

- [Denis Island Airport (DEI)](https://www.flightduration.online/airport/dei-denis-island-denis-island-airport/1ef266de-de1d-6a3a-8565-06bb2780ed98)
- [Chicago O'Hare International Airport (ORD)](https://www.flightduration.online/airport/ord-chicago-chicago-ohare-international-airport/1ef266df-3115-6742-b012-06bb2780ed98)
- [Flight duration calculator](/#calculator)