You should be at the boarding gate about 45 minutes before the scheduled takeoff. I would arrive at the airport 60 to 75 minutes early.
I concur with the previous comment about allegiant leaving early, best to be at the gate about 1 hour before boarding because they close the doors really early and do not reopen no matter how many passengers miss the flight.
Be there about 1.5 hours before departure. If you're flying Allegiant they start boarding really early... like 30-45 minutes before takeoff. They like to leave early if possible.
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