plotFeatureImportances(randomForestModel)
Output:-
                     importance
Duration_minutes       0.603893
Airline                0.094753
Day_Of_Journey         0.049313
Additional_Info        0.046999
Total_Stops            0.040101
Month_of_Journey       0.037361
Route                  0.022107
Destination            0.017473
Depart_Time_Minutes    0.017012
Arr_Time_Hour          0.015979
Day_of_Week            0.015667
Depart_Time_Hour       0.014942
Arr_Time_Minutes       0.013029
isWeekend              0.005964
Source                 0.005406