# Distance from Hanoi (HAN) to Key Largo (OCA)

> 14,798 km · estimated flight time 18h · Ultra-long-haul route.

## Summary

- **Distance**: 14,798 km / 9,195 mi / 7,991 nm
- **Estimated flight time**: 18h
- **Heading**: 8° (north)
- **Return heading**: 352° (north)
- **Classification**: Ultra-long-haul
- **Type**: International (Vietnam) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -11h (When it's 14:37 in Hanoi, it's 03:37 in Key Largo)
- **Elevation difference**: 33 ft (OCA is lower than HAN)

## Airports

### [Noi Bai International Airport (HAN)](https://www.flightduration.online/airport/han-hanoi-noi-bai-international-airport/1ef266df-f632-63cc-97d4-06bb2780ed98)

- City: Hanoi, Vietnam
- ICAO: VVNB
- Timezone: Asia/Ho_Chi_Minh
- Coordinates: 21.220000, 105.810000
- Elevation: 39 ft

### [Ocean Reef Club Airport (OCA)](https://www.flightduration.online/airport/oca-key-largo-ocean-reef-club-airport/1ef266de-5d8c-6592-9efe-06bb2780ed98)

- City: Key Largo, United States
- ICAO: 07FA
- Timezone: America/New_York
- Coordinates: 25.320000, -80.280000
- Elevation: 6 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 14:37 in Hanoi, it's 03:37 in Key Largo.
With a 11-hour time difference, expect significant jet lag.

## Related

- [Noi Bai International Airport (HAN)](https://www.flightduration.online/airport/han-hanoi-noi-bai-international-airport/1ef266df-f632-63cc-97d4-06bb2780ed98)
- [Ocean Reef Club Airport (OCA)](https://www.flightduration.online/airport/oca-key-largo-ocean-reef-club-airport/1ef266de-5d8c-6592-9efe-06bb2780ed98)
- [Flight duration calculator](/#calculator)