# Distance from Honolulu (HNL) to Siena (SAY)

> 12,749 km · estimated flight time 16h · Ultra-long-haul route.

## Summary

- **Distance**: 12,749 km / 7,922 mi / 6,884 nm
- **Estimated flight time**: 16h
- **Heading**: 9° (north)
- **Return heading**: 349° (north)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Italy
- **Intercontinental**: North America → Europe
- **Time difference**: +12h (When it's 02:34 in Honolulu, it's 14:34 in Siena)
- **Elevation difference**: 621 ft (SAY is higher than HNL)

## Airports

### [Daniel K Inouye International Airport (HNL)](https://flightduration.online/airport/hnl-honolulu-daniel-k-inouye-international-airport/1ef266df-8953-6d78-a54a-06bb2780ed98)

- City: Honolulu, United States
- ICAO: PHNL
- Timezone: Pacific/Honolulu
- Coordinates: 21.320000, -157.920000
- Elevation: 13 ft

### [Siena / Ampugnano Airport (SAY)](https://flightduration.online/airport/say-siena-siena-ampugnano-airport/1ef266df-5127-6c2e-a7d4-06bb2780ed98)

- City: Siena, Italy
- ICAO: LIQS
- Timezone: Europe/Rome
- Coordinates: 43.260000, 11.260000
- Elevation: 634 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 02:34 in Honolulu, it's 14:34 in Siena.
With a 12-hour time difference, expect significant jet lag.

## Related

- [Daniel K Inouye International Airport (HNL)](https://flightduration.online/airport/hnl-honolulu-daniel-k-inouye-international-airport/1ef266df-8953-6d78-a54a-06bb2780ed98)
- [Siena / Ampugnano Airport (SAY)](https://flightduration.online/airport/say-siena-siena-ampugnano-airport/1ef266df-5127-6c2e-a7d4-06bb2780ed98)
- [Flight duration calculator](/#calculator)