In 2026, you are still permitted to bring both a pillow and a carry-on bag on a plane, but enforcement has become significantly stricter regarding how they are counted. Most domestic and international airlines allow a standard neck or travel pillow as a "free" comfort item that does not count toward your baggage allowance. However, if you bring a full-sized bed pillow, many carriers now classify it as your one allowed "personal item." If you already have a backpack and a rolling carry-on, a large pillow could result in an "excess baggage" fee at the gate. Furthermore, new 2026 TSA guidelines have flagged gel-filled or liquid-filled cooling pillows as restricted items under the 3-1-1 liquids rule, so travelers are encouraged to stick to memory foam, down, or inflatable versions to avoid delays during the security screening process.