# Distance from Old Harbor (OLH) to Singapore (SIN)

> 10,643 km · estimated flight time 14h · Ultra-long-haul route.

## Summary

- **Distance**: 10,643 km / 6,613 mi / 5,747 nm
- **Estimated flight time**: 14h
- **Heading**: 281° (west northwest)
- **Return heading**: 32° (north northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Singapore
- **Intercontinental**: North America → Asia
- **Time difference**: +16h (When it's 07:39 in Old Harbor, it's 23:39 in Singapore)
- **Elevation difference**: 33 ft (SIN is lower than OLH)

## Airports

### [Old Harbor Airport (OLH)](https://www.flightduration.online/airport/olh-old-harbor-old-harbor-airport/1ef266df-067e-64c0-83c2-06bb2780ed98)

- City: Old Harbor, United States
- ICAO: K6R7
- Timezone: America/Anchorage
- Coordinates: 57.220000, -153.270000
- Elevation: 55 ft

### [Singapore Changi International Airport (SIN)](https://www.flightduration.online/airport/sin-singapore-singapore-changi-international-airport/1ef266e0-00ca-656e-b481-06bb2780ed98)

- City: Singapore, Singapore
- ICAO: WSSS
- Timezone: Asia/Singapore
- Coordinates: 1.350000, 103.990000
- Elevation: 22 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 07:39 in Old Harbor, it's 23:39 in Singapore.
With a 16-hour time difference, expect significant jet lag.

## Related

- [Old Harbor Airport (OLH)](https://www.flightduration.online/airport/olh-old-harbor-old-harbor-airport/1ef266df-067e-64c0-83c2-06bb2780ed98)
- [Singapore Changi International Airport (SIN)](https://www.flightduration.online/airport/sin-singapore-singapore-changi-international-airport/1ef266e0-00ca-656e-b481-06bb2780ed98)
- [Flight duration calculator](/#calculator)