There’s first class, then there’s the Jet Linx version. The private aviation company— now in its own luxe amenity-filled terminal just outside of Boston—offers a jet card membership for frequent fliers looking for a more personalized travel experience. Featuring an innovative new flight-sharing program called OpenSeat Exchange, the company’s new mobile app offers aircraft owners and members the ability to buy and sell empty seats on all Jet Linx flights. Jet card members can browse available flights and book ground transportation, among many other services. Even waiting for the flight is glam: The executive lounge provides a conference room and a kitchenette fully stocked with snacks and beverages. Executive membership $17,500, 380 Hanscom Drive, Bedford, jetlinx.com