Our flight leaves at 5:45 am. What time should we arrive to the airport?

Typically TSA takes less than 10 minutes. If you check in via your phone you can arrive at 445 and have plenty of time.

Be at the airport 2 hours prior. To departure!! Better early and do nothing than miss a flight

0430. The boarding stops about 15 minutes before take off. Plus figure at least 30 minutes for TSA.

If you are parked and ready to Go thru TSA by 4:30 That is enough time to get done at TSA line and be ready at your gate when they board at 5:15. Safe flight