# Distance from Singapore (SIN) to Spearfish (SPF)

> 14,224 km · estimated flight time 18h · Ultra-long-haul route.

## Summary

- **Distance**: 14,224 km / 8,839 mi / 7,680 nm
- **Estimated flight time**: 18h
- **Heading**: 25° (north northeast)
- **Return heading**: 324° (northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (Singapore) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -14h (When it's 15:10 in Singapore, it's 01:10 in Spearfish)
- **Elevation difference**: 3,911 ft (SPF is higher than SIN)

## Airports

### [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

### [Black Hills-Clyde Ice Field (SPF)](https://www.flightduration.online/airport/spf-spearfish-black-hills-clyde-ice-field/1ef266df-3948-6c5c-a35d-06bb2780ed98)

- City: Spearfish, United States
- ICAO: KSPF
- Timezone: America/Denver
- Coordinates: 44.480000, -103.790000
- Elevation: 3,933 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 15:10 in Singapore, it's 01:10 in Spearfish.
With a 14-hour time difference, expect significant jet lag.

## Related

- [Singapore Changi International Airport (SIN)](https://www.flightduration.online/airport/sin-singapore-singapore-changi-international-airport/1ef266e0-00ca-656e-b481-06bb2780ed98)
- [Black Hills-Clyde Ice Field (SPF)](https://www.flightduration.online/airport/spf-spearfish-black-hills-clyde-ice-field/1ef266df-3948-6c5c-a35d-06bb2780ed98)
- [Flight duration calculator](/#calculator)