While it's true that Citi awards Flight Points based on distance flown, this is in addition to the miles available from the airline. Earning Citi Flight Points has no affect on the value or distribution of the real airline miles. Also, to redeem the Flight Points they must be matched by Purchase Points. In simplest case, if the OP buys six airline tickets and earns, say, 12,000 Flight Points he will need to charge $12,000 to use them.