Allegiant Air flight check-in
United States
Quick answer
Allegiant Air online check-in opens 24 h before departure. Online check-in is free.
| Online check-in opens | 24 h before departure |
|---|---|
| Check-in fee | online check-in is free |
| Boarding pass | mobile boarding pass, print at home, at the airport |
| Mobile app check-in | available |
| Self-service kiosks | available |
Times apply to most routes; long-haul, US and some airport-specific deadlines differ. Confirm on the official website before travelling.
How online check-in works
1
Open the airline website or app and enter your booking code and last name
Online check-in
Booking codeA1B2C3
Last nameSMITH
Continue
2
Pick a seat and confirm your travel details
Select your seat
Confirm
3
Download or print your boarding pass
Boarding pass
SMITH / JOHN14A
Allegiant Air allows online check-in, which reduces wait times at the airport. Online check-in typically opens 24 hours before your departure. While exact procedures depend on your booking, the general process follows these steps:
- Visit the Allegiant Air website or mobile app.
- Enter your booking reference number and passenger name.
- Review your flight details and select your seat if applicable.
- Confirm your check-in and print or download your boarding pass.
- Arrive at the airport with your boarding pass and required travel documents.
Practical tip: Check in as early as possible (at the 24-hour mark) to secure preferred seat selections if available, as Allegiant may charge for seat selection on certain fares.
Can I check in at the airport instead of online?
Yes, you can check in at the airport ticket counter or kiosk. However, online check-in is faster and recommended to avoid lines, especially during peak travel times.
Do I need to print my boarding pass?
No, you can show a mobile boarding pass on your phone. However, carry a printed copy as backup in case of technical issues.