Your Apple Watch can take care of the most important ones by keeping them ready on your wrist while your hands are busy with luggage. For one, you can add your boarding pass to the Apple Watch. Choose the "Add to Apple Wallet" icon that appears in the pass's email. From then on, the pass will be available in the Wallet app on your Apple Watch, and it may appear automatically in the Smart Stack. On your iPhone, tap the plus button in the Wallet app, then Digital ID under "Driver's License or ID Cards."