# Distance from Seoul (ICN) to Cascade (ICS)

> 8,955 km · estimated flight time 12h · Long-haul route.

## Summary

- **Distance**: 8,955 km / 5,564 mi / 4,835 nm
- **Estimated flight time**: 12h
- **Heading**: 40° (northeast)
- **Return heading**: 314° (northwest)
- **Classification**: Long-haul
- **Type**: International (South Korea) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -15h (When it's 18:40 in Seoul, it's 03:40 in Cascade)
- **Elevation difference**: 4,725 ft (ICS is higher than ICN)

## Airports

### [Incheon International Airport (ICN)](https://www.flightduration.online/airport/icn-seoul-incheon-international-airport/1ef266df-8e0e-6aac-85a0-06bb2780ed98)

- City: Seoul, South Korea
- ICAO: RKSI
- Timezone: Asia/Seoul
- Coordinates: 37.470000, 126.450000
- Elevation: 23 ft

### [Cascade Airport (ICS)](https://www.flightduration.online/airport/ics-cascade-cascade-airport/1ef266df-3d4d-6956-a44b-06bb2780ed98)

- City: Cascade, United States
- ICAO: KU70
- Timezone: America/Boise
- Coordinates: 44.490000, -116.010000
- Elevation: 4,748 ft

## Route notes

This is a long-haul route typically operated by wide-body aircraft such as the Boeing 777 or Airbus A350. Full meal service, in-flight entertainment, and comfort amenities are standard.

Time-zone information: When it's 18:40 in Seoul, it's 03:40 in Cascade.
With a 15-hour time difference, expect significant jet lag.

## Related

- [Incheon International Airport (ICN)](https://www.flightduration.online/airport/icn-seoul-incheon-international-airport/1ef266df-8e0e-6aac-85a0-06bb2780ed98)
- [Cascade Airport (ICS)](https://www.flightduration.online/airport/ics-cascade-cascade-airport/1ef266df-3d4d-6956-a44b-06bb2780ed98)
- [Flight duration calculator](/#calculator)