I work for a UK 'charter' airline - I have 5 days of rostered flights between now and the end of February, along with a standby block that I almost certainly won't get called for. I have all but one weekend between now and the end of April booked off, and have three weeks of Summer leave confirmed, which were the exact dates I requested and were granted instantly.
you'll be doing most of your flying during the summer, working 7 on 1 off, 7 on 2 off or your employer has seriously lost the plot