Travelers can pay Spirit Airlines $ 100 fee by paying for bags when booking flight online . Airlines will make another $ 36 million this year through ancillary fees for bags , other services . Charge for credit card usage , extra leg room and window or aisle seats are likely to continue .
Travelers can avoid Spirit Airlines $ 100 fee by paying for bags when booking flight online . Airlines will make estimated $ 36 billion this year through ancillary fees for bags , other services . Fees for credit card usage , extra leg room and window or aisle seats are likely to continue .