# Distance from Seoul (ICN) to Shemya (SYA)

> 4,015 km · estimated flight time 6h · Long-haul route.

## Summary

- **Distance**: 4,015 km / 2,495 mi / 2,168 nm
- **Estimated flight time**: 6h
- **Heading**: 49° (northeast)
- **Return heading**: 264° (west)
- **Classification**: Long-haul
- **Type**: International (South Korea) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -18h (When it's 20:20 in Seoul, it's 02:20 in Shemya)
- **Elevation difference**: 75 ft (SYA 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

### [Eareckson Air Station (SYA)](https://flightduration.online/airport/sya-shemya-eareckson-air-station/1ef266df-8831-6558-891b-06bb2780ed98)

- City: Shemya, United States
- ICAO: PASY
- Timezone: America/Adak
- Coordinates: 52.700000, 174.100000
- Elevation: 98 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 20:20 in Seoul, it's 02:20 in Shemya.
With a 18-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)
- [Eareckson Air Station (SYA)](https://flightduration.online/airport/sya-shemya-eareckson-air-station/1ef266df-8831-6558-891b-06bb2780ed98)
- [Flight duration calculator](/#calculator)