In 2026, you can tell if a flight is boarding through several high-tech methods, often before the gate agent even makes an announcement. The most reliable way is through the airline's official mobile app, which sends real-time "push notifications" to your phone the moment the boarding pass scanners are activated. Third-party apps like FlightAware or Flighty also provide "boarding" status updates by tracking the aircraft's turn-around time and gate activity. If you are at the airport, look at the Flight Information Display System (FIDS) monitors; the status will change from "Go to Gate" to "Boarding" or "Final Call." Visually, you can check the gate area for a "boarding group" number being displayed on the overhead screens. Many modern airports have also implemented "biometric boarding," where you'll see passengers lining up at face-scanning kiosks. If you see the crew boarding the plane about 30 to 45 minutes before departure, that is your "pre-boarding" cue that general boarding will follow in approximately 10 to 15 minutes.