You’re at the airport gate. Boarding starts in ten minutes. You reach for your wallet — and your driver’s license isn’t there. You left it on the kitchen counter. The gate agent won’t let you board. That $300 flight? Gone. This happens more than you think. A 2026 survey from the U.S. Travel Association found that nearly 20% of domestic travelers have missed a flight because of missing ID. Not lost luggage. Not traffic. A plastic card sitting on a counter. Here’s the exact list of six documents you need for every trip — even if you’re just driving three…