The Ultimate Guide to Navigating Airports Like a Local online before your flight. Most airlines allow you to check in up to 24 hours in advance, and doing so will save you time at the airport. You can choose your seat, add luggage, and even select meal options if available. Once you’ve checked in, opt for a mobile boarding pass if your airline offers it. https://travelertip.com/the-ultimate-guide-to-navigating-airports-like-a-local/