Depends on the airline. Pilots of major legacy carriers (and not their low-cost spin-offs) are typically really well paid (sometimes excessively so). In Germany I'm aware of cases of >500k$ annually for end-of-their-career pilots. I believe the situation in the US is similar. However, pilots of low-cost carriers earn significantly less. In Europe I heard of salaries in the range of 50k$ annually. I would guess cargo carriers that are not 100% subsidiaries of legacy carriers are closer to low-cost carriers in their salaries