Receive 20,000 Flex Points when you sign up for the U.S. Bank FlexPerks Travel Rewards American Express after you spend $3,500 in four months. You'll also earn two points per dollar on cell phone bills, restaurants, airlines, gas, and groceries, whichever you spend most on each billing cycle. Every other purchase earns one point per dollar. 20,000 FlexPoints is good for $400 in credit on airfare (redeemable on over 150 airlines). You can also redeem for statement credits starting at 5,000 points. You'll receive $25 per ticket you redeem towards airline fees and in-flight entertainment or refreshments as well! Annual fee is $0 for the first year, $49 every year after that.