In reality, there are any number of reasons, but we're trying to maintain at least moderate excitement in the wake of United's LeBroning earlier this month (Not this "LeBroning").
One Frontier exec even borrowed LeBron's famous language when he described the new Cleveland flights:
"Frontier is happy to bring its talents to Cleveland,” he said.
In addition to the Orlando and Seattle flights, which will be offered for a limited time at $69 and $119 one-way, respectively, Frontier plans to double the number of flights to its hub in Denver and has already added flights to Trenton-Mercer Airport in New Jersey (which, I mean, who cares, but it's about 40 minutes north of Philly).
Frontier's low fares are obviously attractive, but the best thing about this western airline: THE HEADRESTS. For short flights, Frontier is fantastic. I've only flown once (out of Akron) but I recall plenty of leg room and, again, ludicrously comfortable headrests. It has been lamented that Frontier doesn't serve complimentary snacks, an affront on not only our expectations but our very basic human rights, it would seem. But because of consistently low ticket costs, something has to be sacrificed.
Frontier may continue to expand its operations out of Hopkins, what with the huge gaping hole United has now left.