Three or four days per week of five to seven hours of loggable time each and in a month you can quickly collect a ton of time. Most airline pilots bid their schedules monthly based on their company seniority. More on seniority in a minute. The airline provides plenty of variety when they put groups of flights together to make trips, called lines, that last anywhere from one day to as many as 10 depending upon the carrier. Some include all day trips, so pilots can be home at night or groups of three or four days at a time.
Some schedules avoid weekend flying, some are mostly nights.
The key to successful bidding is one, knowing what you want and two, having a seniority number high enough to be able to hold the kind of line you'd like. Your airline seniority number is normally assigned to you when you complete training. The sooner you hire on, the lower your seniority number and the stronger your bidding power. Be prepared though. Early on, with little seniority, you can expect the rotten schedules or to be placed on reserve.