# Distance from Singapore (SIN) to St Marys (STQ)

> 15,254 km · estimated flight time 19h · Ultra-long-haul route.

## Summary

- **Distance**: 15,254 km / 9,478 mi / 8,236 nm
- **Estimated flight time**: 19h
- **Heading**: 3° (north)
- **Return heading**: 356° (north)
- **Classification**: Ultra-long-haul
- **Type**: International (Singapore) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -12h (When it's 04:50 in Singapore, it's 16:50 in St Marys)
- **Elevation difference**: 1,912 ft (STQ is higher than SIN)

## Airports

### [Singapore Changi International Airport (SIN)](https://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

### [St Marys Municipal Airport (STQ)](https://flightduration.online/airport/stq-st-marys-st-marys-municipal-airport/1ef266df-31a7-60e8-a173-06bb2780ed98)

- City: St Marys, United States
- ICAO: KOYM
- Timezone: America/New_York
- Coordinates: 41.410000, -78.500000
- Elevation: 1,934 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 04:50 in Singapore, it's 16:50 in St Marys.
With a 12-hour time difference, expect significant jet lag.

## Related

- [Singapore Changi International Airport (SIN)](https://flightduration.online/airport/sin-singapore-singapore-changi-international-airport/1ef266e0-00ca-656e-b481-06bb2780ed98)
- [St Marys Municipal Airport (STQ)](https://flightduration.online/airport/stq-st-marys-st-marys-municipal-airport/1ef266df-31a7-60e8-a173-06bb2780ed98)
- [Flight duration calculator](/#calculator)