# Distance from Gaithersburg (GAI) to Melbourne (MEL)

> 16,384 km · estimated flight time 20h · Ultra-long-haul route.

## Summary

- **Distance**: 16,384 km / 10,181 mi / 8,847 nm
- **Estimated flight time**: 20h
- **Heading**: 259° (west)
- **Return heading**: 74° (east northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Australia
- **Intercontinental**: North America → Oceania
- **Time difference**: +14h (When it's 09:34 in Gaithersburg, it's 23:34 in Melbourne)
- **Elevation difference**: 105 ft (MEL is lower than GAI)

## Airports

### [Montgomery County Airpark (GAI)](https://www.flightduration.online/airport/gai-gaithersburg-montgomery-county-airpark/1ef266df-1d9e-6f2e-a3da-06bb2780ed98)

- City: Gaithersburg, United States
- ICAO: KGAI
- Timezone: America/New_York
- Coordinates: 39.170000, -77.170000
- Elevation: 539 ft

### [Melbourne International Airport (MEL)](https://www.flightduration.online/airport/mel-melbourne-melbourne-international-airport/1ef266e0-1368-61f8-bfbc-06bb2780ed98)

- City: Melbourne, Australia
- ICAO: YMML
- Timezone: Australia/Melbourne
- Coordinates: -37.670000, 144.840000
- Elevation: 434 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 09:34 in Gaithersburg, it's 23:34 in Melbourne.
With a 14-hour time difference, expect significant jet lag.

## Related

- [Montgomery County Airpark (GAI)](https://www.flightduration.online/airport/gai-gaithersburg-montgomery-county-airpark/1ef266df-1d9e-6f2e-a3da-06bb2780ed98)
- [Melbourne International Airport (MEL)](https://www.flightduration.online/airport/mel-melbourne-melbourne-international-airport/1ef266e0-1368-61f8-bfbc-06bb2780ed98)
- [Flight duration calculator](/#calculator)