# Distance from Alto Parnaiba (APY) to Seoul (ICN)

> 16,767 km · estimated flight time 21h · Ultra-long-haul route.

## Summary

- **Distance**: 16,767 km / 10,419 mi / 9,054 nm
- **Estimated flight time**: 21h
- **Heading**: 12° (north northeast)
- **Return heading**: 344° (north northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (Brazil) → South Korea
- **Intercontinental**: South America → Asia
- **Time difference**: +12h (When it's 23:58 in Alto Parnaiba, it's 11:58 in Seoul)
- **Elevation difference**: 945 ft (ICN is lower than APY)

## Airports

### [Alto Parnaiba Airport (APY)](https://www.flightduration.online/airport/apy-alto-parnaiba-alto-parnaiba-airport/1ef266df-baad-6068-9f90-06bb2780ed98)

- City: Alto Parnaiba, Brazil
- ICAO: SNAI
- Timezone: America/Fortaleza
- Coordinates: -9.080000, -45.950000
- Elevation: 968 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 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 23:58 in Alto Parnaiba, it's 11:58 in Seoul.
With a 12-hour time difference, expect significant jet lag.

## Related

- [Alto Parnaiba Airport (APY)](https://www.flightduration.online/airport/apy-alto-parnaiba-alto-parnaiba-airport/1ef266df-baad-6068-9f90-06bb2780ed98)
- [Incheon International Airport (ICN)](https://www.flightduration.online/airport/icn-seoul-incheon-international-airport/1ef266df-8e0e-6aac-85a0-06bb2780ed98)
- [Flight duration calculator](/#calculator)