Travelers in an airport in business suits. Credit: shutterdemon/Adobe Stock Business travel can look glamorous from the outside, with perks like airport lounge access, expense accounts, and the ability to rack up points and earn status. But anyone who travels for work regularly knows a single delayed flight or travel mistake, like booking a poorly located hotel, can derail more than just the trip; it can ruin your entire workweek. For the smoothest business trips, these 10 rules will help you book smarter, stay focused on work instead of the stress of travel, and reap the most benefits in the process. Choose the most direct flight available. View of an airplane cabin. Alexander Spatari/Getty Images If there is a nonstop option, try to take it. Even if it costs more, direct flights reduce your risk of delays, missed connections, unexpected overnight stays, and lost baggage.…