Intrigued by the thought of owning a travel rewards card, but don’t want to fork over a hefty annual fee? You might like what the U.S. Bank FlexPerks® Travel Rewards Visa Signature® Card offers — namely, a low cost of ownership, plus rewards tiers with a twist. It doesn’t have the razzle-dazzle of a premium travel card,... Robin Saks Frankel is a writer at NerdWallet.