Let’s face it—most of us typing What terminal is Spirit Airlines at EWR are trying to avoid showing up at the wrong spot with ten minutes to spare. Terminal B at Newark Liberty International Airport is Spirit’s home base here, and while it may not win any awards for ambiance, it delivers where it counts. The signage is clear, the TSA lines are manageable if you time it right, and once you're through security, it's all about finding your gate, grabbing a snack, and mentally preparing for a Spirit-style boarding process.