Good comments one and all, however, there is an alternative to using the credit card.
If you can afford to pay up front by using a credit card or your own savings, then its highly likely that a bank or financial institution will be prepared to lend you the money to do so.
Until you've repaid the total amount owing, the finacial institution who lent you the money have a legal obligation to refund you should the flying school become insolvent.
(Remortgaing doesn't cover this scenario).