Since IOE I average 65 hrs of loggable block per month. That includes very low block months for primary vacations (three consecutive weeks off if you bid right) and recurrent training months. It also includes a few months I picked up 1-4 extra days. So my range on vacation and training months to pick up months is 25 hrs block to 85 block.
Credit is another story. Average since IOE is about 95 per month. Range 75-125.
For every short ORD to MKE/MSN/AZO flight there is a ORD to PWM/SAV/CHS flight. Just look at the flight map on our website. You will have some block on flights 40-60 minutes but also will have 2 hr plus ones too.
Flying in and out of ORD in both summer and winter will increase block. Think time spent in the penalty box waiting for a gate or taxing to the newly opened central deice pad plus your average daily “number 15 for departure”, or your route just closed for a T storm, etc. It’s not uncommon to have half your block time on the ground on a short flight.