Because Spirit Airlines uses "ultra-low-cost" seating with minimal recline (often called "pre-reclined" seats), the best pillow is one that provides firm lateral support rather than back-of-the-head cushioning. A standard wrap-around memory foam pillow, like the Turtle or a high-walled Cabeau, is ideal because Spirit seats are quite upright; a thick pillow behind your neck will push your head forward uncomfortably. In 2026, many frequent Spirit flyers also recommend an inflatable lumbar pillow. Since the seats are thin to save weight and space, added lower-back support can make a two-hour flight significantly more tolerable. Additionally, since Spirit charges for carry-on bags, a "wearable" travel pillow that clips onto your person or a "stuffable" pillowcase (where you use your clothes as the stuffing) is a smart way to save on baggage fees while ensuring you have a cushion for the journey.