Accurately predicting aircraft landing distance is important for preventing runway overruns and enhancing flight safety. Relying solely on the manufacturer’s operational manuals and airport environmental conditions for landing distance assessment can lead to significant errors when compared to actual operational conditions. Therefore, a new algorithm is proposed for predicting aircraft landing distance based on the aircraft’s flight parameters and its actual landing performance during the approach and landing phase. Using a domestically produced aircraft as an example, this paper simulates the actual landing distances under different autobrake settings (high, medium and low modes). Additionally, it compares the calculation of the horizontal flight distance during the airborne segment (from 50ft above ground level to touchdown) with methods proposed by a foreign company. The simulation curves demonstrate that under different autobrake settings, the predicted landing distance decreases with autobrake mode being from low to high, and the calculation results outperform those proposed by a foreign company. The simulation results indicate that the accuracy of predicted landing distances under different autobrake settings meets the design requirements.