# Distance from Seoul (ICN) to Twin Falls (TWF)

> 9,199 km · estimated flight time 12h · Ultra-long-haul route.

## Summary

- **Distance**: 9,199 km / 5,716 mi / 4,967 nm
- **Estimated flight time**: 12h
- **Heading**: 41° (northeast)
- **Return heading**: 316° (northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (South Korea) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -15h (When it's 06:47 in Seoul, it's 15:47 in Twin Falls)
- **Elevation difference**: 4,130 ft (TWF is higher than ICN)

## Airports

### [Incheon International Airport (ICN)](https://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

### [Joslin Field/Magic Valley Regional Airport (TWF)](https://flightduration.online/airport/twf-twin-falls-joslin-fieldmagic-valley-regional-airport/1ef266df-3c7c-6e50-95be-06bb2780ed98)

- City: Twin Falls, United States
- ICAO: KTWF
- Timezone: America/Boise
- Coordinates: 42.480000, -114.490000
- Elevation: 4,153 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 06:47 in Seoul, it's 15:47 in Twin Falls.
With a 15-hour time difference, expect significant jet lag.

## Related

- [Incheon International Airport (ICN)](https://flightduration.online/airport/icn-seoul-incheon-international-airport/1ef266df-8e0e-6aac-85a0-06bb2780ed98)
- [Joslin Field/Magic Valley Regional Airport (TWF)](https://flightduration.online/airport/twf-twin-falls-joslin-fieldmagic-valley-regional-airport/1ef266df-3c7c-6e50-95be-06bb2780ed98)
- [Flight duration calculator](/#calculator)