A320 Fan
Not necessarily correct on the ALC vs BFS thing.
It's all about yield. BFS is a short route with business passengers who (probably) book later & (probably) pay higher fares.
ALC is a longer flight (more fuel - higher costs.) In terms of price per mile travelled the half full BFS could potentially make more!
They must think the LBA-BFS market is worth the effort as they are increasing the route to 3 a day on weekdays this summer.