Back To Previous Allegiant Offers New Flights to Florida Friday, August 24, 2012 3:00 AM Allegiant Airlines comes to Harrisburg International Airport. The Harrisburg International Airport has added a new low-cost airline. Allegiant will begin offering non-stop flights from Harrisburg to Orlando on October 31st and Harrisburg to Tampa on November 2nd. Read more here. Posted In: What's New?