# Distance from Nairobi (NBO) to Portsmouth (PSM)

> 11,541 km · estimated flight time 15h · Ultra-long-haul route.

## Summary

- **Distance**: 11,541 km / 7,171 mi / 6,232 nm
- **Estimated flight time**: 15h
- **Heading**: 314° (northwest)
- **Return heading**: 79° (east northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (Kenya) → United States
- **Intercontinental**: Africa → North America
- **Time difference**: -7h (When it's 08:23 in Nairobi, it's 01:23 in Portsmouth)
- **Elevation difference**: 5,230 ft (PSM is lower than NBO)

## Airports

### [Jomo Kenyatta International Airport (NBO)](https://www.flightduration.online/airport/nbo-nairobi-jomo-kenyatta-international-airport/1ef266de-ec1d-68ec-a027-06bb2780ed98)

- City: Nairobi, Kenya
- ICAO: HKJK
- Timezone: Africa/Nairobi
- Coordinates: -1.320000, 36.930000
- Elevation: 5,330 ft

### [Portsmouth International At Pease Airport (PSM)](https://www.flightduration.online/airport/psm-portsmouth-portsmouth-international-at-pease-airport/1ef266df-33b1-6488-97e8-06bb2780ed98)

- City: Portsmouth, United States
- ICAO: KPSM
- Timezone: America/New_York
- Coordinates: 43.080000, -70.820000
- Elevation: 100 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 08:23 in Nairobi, it's 01:23 in Portsmouth.
With a 7-hour time difference, expect significant jet lag.

## Related

- [Jomo Kenyatta International Airport (NBO)](https://www.flightduration.online/airport/nbo-nairobi-jomo-kenyatta-international-airport/1ef266de-ec1d-68ec-a027-06bb2780ed98)
- [Portsmouth International At Pease Airport (PSM)](https://www.flightduration.online/airport/psm-portsmouth-portsmouth-international-at-pease-airport/1ef266df-33b1-6488-97e8-06bb2780ed98)
- [Flight duration calculator](/#calculator)