I wonder if JetBlue is fairly limited in its growth in Seattle because of the gate situation.
They seem to be stuck with only one gate. If one of the flights run late, they have to use the remote gate, which requires a wait for a bus in a very crowded room.
Maybe when the next phase of expansion is completed, they can get one more gate and schedule new flights. Mint from SEA to FLL will be a nice route.
Carfield