Whether United Airlines charges for a carry-on in 2026 depends entirely on your fare class. If you purchase a Basic Economy ticket, you are not allowed a full-sized carry-on bag for the overhead bin; you are restricted to one small personal item that fits under the seat. If you bring a carry-on to the gate with a Basic Economy ticket, you will be charged a $65 gate-check fee (the standard checked bag fee plus a $25 gate handling surcharge). However, for all other fare classes—including United Economy, Economy Plus, and First Class—one full-sized carry-on and one personal item remain free of charge. Additionally, certain passengers are exempt from the Basic Economy restriction: MileagePlus Premier members, primary cardholders of qualifying Chase United credit cards, and Star Alliance Gold members can still bring a free carry-on even on Basic Economy fares. In 2026, United continues to use this policy to encourage travelers to upgrade to standard Economy or check their bags early to speed up the boarding process.