# Distance from Athens (ATH) to Helena (HLN)

> 9,640 km · estimated flight time 12h · Ultra-long-haul route.

## Summary

- **Distance**: 9,640 km / 5,990 mi / 5,205 nm
- **Estimated flight time**: 12h
- **Heading**: 331° (north northwest)
- **Return heading**: 33° (north northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (Greece) → United States
- **Intercontinental**: Europe → North America
- **Time difference**: -9h (When it's 00:38 in Athens, it's 15:38 in Helena)
- **Elevation difference**: 3,569 ft (HLN is higher than ATH)

## Airports

### [Eleftherios Venizelos International Airport (ATH)](https://www.flightduration.online/airport/ath-athens-eleftherios-venizelos-international-airport/1ef266df-4dd8-66cc-be87-06bb2780ed98)

- City: Athens, Greece
- ICAO: LGAV
- Timezone: Europe/Athens
- Coordinates: 37.940000, 23.940000
- Elevation: 308 ft

### [Helena Regional Airport (HLN)](https://www.flightduration.online/airport/hln-helena-helena-regional-airport/1ef266df-20d7-6808-b3f9-06bb2780ed98)

- City: Helena, United States
- ICAO: KHLN
- Timezone: America/Denver
- Coordinates: 46.610000, -111.980000
- Elevation: 3,877 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 00:38 in Athens, it's 15:38 in Helena.
With a 9-hour time difference, expect significant jet lag.

## Related

- [Eleftherios Venizelos International Airport (ATH)](https://www.flightduration.online/airport/ath-athens-eleftherios-venizelos-international-airport/1ef266df-4dd8-66cc-be87-06bb2780ed98)
- [Helena Regional Airport (HLN)](https://www.flightduration.online/airport/hln-helena-helena-regional-airport/1ef266df-20d7-6808-b3f9-06bb2780ed98)
- [Flight duration calculator](/#calculator)