You can use the Discover it Miles credit card at 99% of places that take credit cards nationwide, according to the Feb. 2024 issue of the Nilson Report3, including travel insurance companies. The U.S. Trusted Traveler Programs accept Discover Credit Cards as a form of payment for TSA PreCheck, Global Entry, and others. And, the Discover it Miles card is a rewards credit card that gives you points for travel expenses and every other purchase you make with your card. So it can be your travel credit card and your everyday card. And unlike many travel credit cards, Discover charges no annual fee, even after account opening.