Heads up, travelers! Starting June 3, United Airlines is tightening its check-in window for domestic flights—you’ll now need to check in at least 45 minutes before takeoff (up from 30). Miss it, and you’re not getting on that plane, even if you’re bag-free. United says it’s all about smoother boarding and fewer last-minute scrambles. So, if you’re flying this summer, set those alarms and give yourself extra time at the airport! #TravelTips #UnitedAirlines #SummerTravel #Business