# Distance from Honolulu (HNL) to Atwater (MER)

> 3,999 km · estimated flight time 6h · Medium-haul route.

## Summary

- **Distance**: 3,999 km / 2,485 mi / 2,159 nm
- **Estimated flight time**: 6h
- **Heading**: 55° (northeast)
- **Return heading**: 254° (west southwest)
- **Classification**: Medium-haul
- **Type**: Domestic (United States)
- **Time difference**: +3h (When it's 09:50 in Honolulu, it's 12:50 in Atwater)
- **Elevation difference**: 178 ft (MER is higher than HNL)

## Airports

### [Daniel K Inouye International Airport (HNL)](https://www.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

### [Castle Airport (MER)](https://www.flightduration.online/airport/mer-atwater-castle-airport/1ef266df-2a82-6f4c-b75d-06bb2780ed98)

- City: Atwater, United States
- ICAO: KMER
- Timezone: America/Los_Angeles
- Coordinates: 37.400000, -120.600000
- Elevation: 190 ft

## Route notes

This is a medium-haul route that may be operated by either narrow-body or wide-body aircraft depending on demand. Passengers can expect a meal service on most carriers.

Time-zone information: When it's 09:50 in Honolulu, it's 12:50 in Atwater.
The 3-hour time difference may cause some jet lag.

## Related

- [Daniel K Inouye International Airport (HNL)](https://www.flightduration.online/airport/hnl-honolulu-daniel-k-inouye-international-airport/1ef266df-8953-6d78-a54a-06bb2780ed98)
- [Castle Airport (MER)](https://www.flightduration.online/airport/mer-atwater-castle-airport/1ef266df-2a82-6f4c-b75d-06bb2780ed98)
- [Flight duration calculator](/#calculator)