Heads up, travelers! United Airlines is tightening its check-in window—starting June 3, you’ll need to check in at least 45 minutes before your domestic flight (even if you’re just bringing a carry-on). No more dashing in last minute! This move is all about keeping things running smoothly as airports get busier than ever. Pro tip: aim for off-peak flights (like Tuesdays or Wednesdays) to save cash and stress less about missing the cutoff. #TravelTips #UnitedAirlines #SummerTravel #Business