# Distance from Atwater (MER) to Port Louis (MRU)

> 18,121 km · estimated flight time 22h · Ultra-long-haul route.

## Summary

- **Distance**: 18,121 km / 11,260 mi / 9,784 nm
- **Estimated flight time**: 22h
- **Heading**: 6° (north)
- **Return heading**: 355° (north)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Mauritius
- **Intercontinental**: North America → Africa
- **Time difference**: +11h (When it's 11:02 in Atwater, it's 22:02 in Port Louis)
- **Elevation difference**: 4 ft (MRU is lower than MER)

## Airports

### [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

### [Sir Seewoosagur Ramgoolam International Airport (MRU)](https://www.flightduration.online/airport/mru-port-louis-sir-seewoosagur-ramgoolam-international-airport/1ef266de-d896-635a-a611-06bb2780ed98)

- City: Port Louis, Mauritius
- ICAO: FIMP
- Timezone: Indian/Mauritius
- Coordinates: -20.430000, 57.680000
- Elevation: 186 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 11:02 in Atwater, it's 22:02 in Port Louis.
With a 11-hour time difference, expect significant jet lag.

## Related

- [Castle Airport (MER)](https://www.flightduration.online/airport/mer-atwater-castle-airport/1ef266df-2a82-6f4c-b75d-06bb2780ed98)
- [Sir Seewoosagur Ramgoolam International Airport (MRU)](https://www.flightduration.online/airport/mru-port-louis-sir-seewoosagur-ramgoolam-international-airport/1ef266de-d896-635a-a611-06bb2780ed98)
- [Flight duration calculator](/#calculator)