United Express flights are served by regional partner carriers using smaller aircraft than United's mainline fleet. Aircraft in the United Express fleet generally have less room in the overhead bins for carry-on baggage, and in most cases roller bags and other larger carry-on items will not fit in United Express overhead bins. As a result, you may need to gate-check these items before boarding.

Gate agents will provide green tags for gate-checked items, and baggage handlers will place them into the baggage hold during boarding. You can pick up your green-tagged baggage planeside when you arrive, rather than going to baggage claim. Customers traveling on EMB170, EMB175 or CRJ-700 aircraft may be able to bring roller bags and larger carry-on items on board, as these aircraft offer more overhead bin space.

When traveling on a United Express flight, please make sure to place any medications or other items that you might need on board in a smaller carry-on bag, so you can keep them with you during your flight. Personal vaporizers and e-cigarettes should also be packed in your smaller carry-on bag, as they are not permitted in checked or gate-checked bags.

As on mainline flights, any item larger than the allowed carry-on size or exceeding the one carry-on and one personal item limit will be checked to your final destination. Baggage service charges may apply, and you'll have to pick up these items at baggage claim.

Note: Due to limited overhead bin space, customers traveling on aircraft with 50 passenger seats, such as the EMB 145 and CRJ-200, are allowed one standard carry-on size bag that will be checked at the gate free of charge and one personal item to be taken on board. A second item is only permitted if both items can fit together in the personal item bag sizer located at the departure gate.