# Distance from Chicago (ORD) to Osan Air Base (OSN)

> 10,535 km · estimated flight time 13h · Ultra-long-haul route.

## Summary

- **Distance**: 10,535 km / 6,546 mi / 5,689 nm
- **Estimated flight time**: 13h
- **Heading**: 333° (north northwest)
- **Return heading**: 25° (north northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → South Korea
- **Intercontinental**: North America → Asia
- **Time difference**: +14h (When it's 21:18 in Chicago, it's 11:18 in Osan Air Base)
- **Elevation difference**: 642 ft (OSN is lower than ORD)

## Airports

### [Chicago O'Hare International Airport (ORD)](https://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

### [Osan Air Base (OSN)](https://flightduration.online/airport/osn-osan-air-base/1ef266df-8e18-641c-9d4f-06bb2780ed98)

- City: Osan Air Base, South Korea
- ICAO: RKSO
- Timezone: Asia/Seoul
- Coordinates: 37.090000, 127.030000
- Elevation: 38 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 21:18 in Chicago, it's 11:18 in Osan Air Base.
With a 14-hour time difference, expect significant jet lag.

## Related

- [Chicago O'Hare International Airport (ORD)](https://flightduration.online/airport/ord-chicago-chicago-ohare-international-airport/1ef266df-3115-6742-b012-06bb2780ed98)
- [Osan Air Base (OSN)](https://flightduration.online/airport/osn-osan-air-base/1ef266df-8e18-641c-9d4f-06bb2780ed98)
- [Flight duration calculator](/#calculator)