My flight leaves at 545AM..what time should I be at the airport

My flight leaves at 545AM..what time should I be at the airport? I'm leaving from Saint Louis,MO to Baltimore,Maryland.. Air Travel - 9 Answers Random Answers, Critics, Comments, Opinions : 1 : Because its not an international flight, you should be at the airport around 5:00 if your traveling with children make it 10 mins earlier. 2 : I would come there at 3:45 AM just to make sure that I make it there on time and have time to check in, get searched, and everything. 3 : i usually leave an hour before when i travel so Thant if anything comes up if the lines are long or something i have time to spare i think you should leave around 4 15 4 : Your suppose to be there 90min prior to take off. Don't go at the last minute some airports will give away your seat. Hope this helps. (= Answer my question please? http://answers.yahoo.com/question/index;_ylt=Ahi2gjVWYcnV_QF_Zeu7VO1ADX1G;_ylv=3?qid=20090726163602AAQMYRA 5 : At least on hour prior to boarding.........check your boarding time and adjust.......... 6 : you should be there one hour before the flight takes off. 7 : Just to be secure, be there around 1-1 1/2 hour early, just in case if the check-in lineups are long, or there are any other things slowing you down at the airport. Also, check your flight status online to ensure that your light hase.nt been delayed or cancelled. 8 : since this is a domestic flight you should be at the airport atleast 1.5-2 hours before departure. which means you should be at the airport betwwen 345am and 415 am. 9 : 300