How long is flight SA234?

The JNB to LHR route is the basis for the schedule. View the full route forecast and typical duration on the Turbcast route page.

Flight SA234

SA234 Turbulence ForecastSouth African Airways · JNB → LHR

About flight SA234

Airline: South African Airways (SA)
Route: JNB → LHR
Typical Aircraft: A346
Distance: 9,075 km
Duration: 11h 03m
Cruise Altitude: FL410

See today’s turbulence forecast

South African Airways SA234 flies the tropical convective route from Johannesburg to London. Conditions change hour to hour - view the live forecast for your departure date.

View live forecast

Check SA234 on a specific date

Turbulence on the JNB → LHR route

The route crosses mid-latitudes where the polar jet can influence flight conditions, though exposure is shorter than on genuine long-haul crossings. At tropical latitudes, convective turbulence from thunderstorms is the main driver - pilots generally route around storm cells, but afternoon/evening flights encounter more build-up than morning departures. A large portion of the flight crosses open ocean (Mediterranean), where upper-level conditions are generally smoother than over continental terrain.

Calmest season: Dry season. At tropical latitudes, convective (thunderstorm-driven) turbulence dominates during regional wet seasons and monsoon cycles, typically worst in the afternoon and evening.

Full JNB to LHR route guide

Frequently asked questions

Is SA234 usually a bumpy flight?

South African Airways SA234 operates between JNB and LHR. Whether it’s bumpy depends on the day’s weather - Turbcast pulls live NOAA aviation-grade data so you can check the actual forecast for your departure date rather than relying on averages.

What aircraft does SA234 use?

SA234 is typically operated by the A346. Aircraft swaps happen - confirm with your booking before flying.

How long is the JNB to LHR flight?

Approximately 11h 03m direct, covering 9,075 km at a typical cruise of FL410.

When does SA234 have the smoothest weather?

Historically calmest during Dry season. Forecast accuracy improves as you get closer to departure - within 48 hours the NOAA WAFS model is at peak skill.