The Blue Sky from American Express® is designed for those with very good credit and who plan to take advantage of the reward program.Through the reward program, cardholders receive one point for every dollar spent on all purchases. An unlimited amount of miles can be earned, and miles do not expire as long as the card is active and within good standing. Points can be redeemed for discounts on any flight, hotel, rental car, or cruise, without blackout dates or travel restrictions. Points can only be redeemed toward one purchase at a time in 7,500 increments, which is equal to a credit of up to $100.