Yes, you are absolutely allowed to bring your own pillow on an airplane in 2026, and it is a highly recommended practice for long-haul comfort. Most airlines do not count a standard neck pillow or even a small bed pillow as a separate carry-on item if it is carried in your hands or strapped to your luggage. However, if you bring a full-sized "king" pillow, some budget carriers like Spirit or Ryanair might attempt to classify it as a personal item, so it is best to check their specific dimensions. Beyond comfort, bringing your own pillow is more hygienic than using airline-provided ones, which are often recycled between flights with only a thin paper cover changed. For 2026 travelers, "memory foam" or "inflatable" pillows are the most popular choices due to their ability to compress into a small bag. Just ensure that the pillow does not contain any prohibited items inside the casing, and be prepared to place it in a bin for X-ray screening if requested by security during the boarding process.