Allegiant Air Check-In Guide
Online check-in, airport deadlines, and boarding times for Allegiant Air (G4).
Check in online
Online check-in opens 24 hours before departure. Skip the line by checking in on your phone or computer.
Check in on Allegiant AirOnline check-in opens24 hours before departure
Domestic check-in closes45 minutes before departure
International check-in closes45 minutes before departure
Domestic bag drop closes60 minutes before departure (bags accepted 1-2 hours before only)
International bag drop closes60 minutes before departure
Boarding door closes15 minutes before departure
Mobile boarding pass
Store your pass in Apple Wallet or Google Pay.
Airport kiosk check-in
Self-service kiosks available at most airports.
- Bags can only be dropped 1-2 hours before departure — not earlier, not later.
- Allegiant recommends being at the gate at least 1 hour before scheduled departure.
- Online check-in closes 45 minutes before departure.
- Check in online to lock in your seat and speed up the airport experience.
- International flights usually require arriving 2-3 hours before departure.
- If checking bags, arrive early enough to beat the bag drop cutoff.
- Boarding typically begins 30-45 minutes before departure.
- Boarding doors close 15 minutes before departure — missing the cutoff means missing the flight.