# Distance from Boundary (BYA) to Seoul (ICN)

> 6,431 km · estimated flight time 9h · Long-haul route.

## Summary

- **Distance**: 6,431 km / 3,996 mi / 3,472 nm
- **Estimated flight time**: 9h
- **Heading**: 290° (west northwest)
- **Return heading**: 31° (north northeast)
- **Classification**: Long-haul
- **Type**: International (United States) → South Korea
- **Intercontinental**: North America → Asia
- **Time difference**: +17h (When it's 18:39 in Boundary, it's 11:39 in Seoul)
- **Elevation difference**: 2,917 ft (ICN is lower than BYA)

## Airports

### [Boundary Airport (BYA)](https://www.flightduration.online/airport/bya-boundary-boundary-airport/1ef266df-11f9-6a8e-ae68-06bb2780ed98)

- City: Boundary, United States
- ICAO: KBYA
- Timezone: America/Anchorage
- Coordinates: 64.080000, -141.110000
- Elevation: 2,940 ft

### [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

## 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 18:39 in Boundary, it's 11:39 in Seoul.
With a 17-hour time difference, expect significant jet lag.

## Related

- [Boundary Airport (BYA)](https://www.flightduration.online/airport/bya-boundary-boundary-airport/1ef266df-11f9-6a8e-ae68-06bb2780ed98)
- [Incheon International Airport (ICN)](https://www.flightduration.online/airport/icn-seoul-incheon-international-airport/1ef266df-8e0e-6aac-85a0-06bb2780ed98)
- [Flight duration calculator](/#calculator)