I’m not sure if this is within the scope of the intended question from the OP, but it provide some support to the planning process
- Weather Briefing (if facing a headwind, your groundspeed will be lower, and it will take longer to reach your destination meaning more fuel brunt or an increase in airspeed to decrease time, again using more fuel)
- Weight and Balances (there is the legal max ramp weight, takeoff weight , etc. It’s a tradeoff between capability of loading pax and cargo with range, as well as proper placement to prevent exceeding CG moments, i.e. cargo loaded so far aft, the plane will always pitch up, increasing the tendency of a stall