As I said, I think a Spirit merger is the least likely future, but yeh, sure, I suppose what you suggest could happen.

I think there are simpler reasons for this present debate.

TTN is thrilled with the successful breathing of life into the airport, wants to capitalise on it and - fairly sensibly - does not want to be beholden to just one airline. At the start of this, Frontier made an offer of a second loan to TNN which the airport declined because they thought it would give Frontier a lock on the airport and could perhaps keep other airlines out.

I also assume the folk at TTN have some concerns about Frontier's build-up at PHL despite Frontier's assurances that TTN is "safe." But is is interesting that this more open talk of a second airline is happening at the same time that they are publicly discussing plans for a new terminal.

I'm slightly surprised that a second airline hasn't out its hand up yet, but there is also the perception that the TTN terminal is pretty close to "full."

And for all the talk of ACY, I don't think it is as attractive as TTN would be with a better terminal, because TTN is that bit closer to the bulk of the population.