# Distance from Seoul (ICN) to Marshfield (MFI)

> 10,171 km · estimated flight time 13h · Ultra-long-haul route.

## Summary

- **Distance**: 10,171 km / 6,320 mi / 5,492 nm
- **Estimated flight time**: 13h
- **Heading**: 25° (north northeast)
- **Return heading**: 332° (north northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (South Korea) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -14h (When it's 09:45 in Seoul, it's 19:45 in Marshfield)
- **Elevation difference**: 1,255 ft (MFI 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

### [Marshfield Municipal Airport (MFI)](https://www.flightduration.online/airport/mfi-marshfield-marshfield-municipal-airport/1ef266df-2a9b-6740-8f1d-06bb2780ed98)

- City: Marshfield, United States
- ICAO: KMFI
- Timezone: America/Chicago
- Coordinates: 44.640000, -90.190000
- Elevation: 1,278 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 09:45 in Seoul, it's 19:45 in Marshfield.
With a 14-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)
- [Marshfield Municipal Airport (MFI)](https://www.flightduration.online/airport/mfi-marshfield-marshfield-municipal-airport/1ef266df-2a9b-6740-8f1d-06bb2780ed98)
- [Flight duration calculator](/#calculator)