Earning miles

Hubby have been using the same airlines when he goes here for vacation and back to Kuwait. And because of this he is earning miles with the airlines. Once he collected the required miles he can avail of a free flight deals. That’s why he even have a form ready for me. So that if ever we are going to visit him we would be using that airlines and the miles that we are going to accumulate on that trip will be added to his miles.