Weapon laws (Title 76, Ch. 10, Pt. 5)
Utah does not have purchase permits, gun registration, or gun-owner licensing. There is no waiting period mandated for firearm purchases and private gun sales are legal. Concealed weapon permits (CCW) are-shall issue, all US permits are recognized, and open carry is allowed (with some exceptions).
The secure areas of airports, non-public areas of government buildings (secure areas), courthouses, courtrooms, mental health facilities or correctional facilities are off-limits to firearms. Public area of other government buildings are legal. Secure storage must be provided. See also 76-8-311.1 and 76-8-311.3.
No guns signs
No gun signs on private property do not have the force of law. Failure to comply with a request to leave or to disarm would be trespassing. Frontier Carry recommends taking your business elsewhere.
It is legal to carry while consuming alcohol or while in bars or restaurants that serve alcohol. One may not be intoxicated while carrying a firearm (76-10-528) and the criteria is the same as for DUI (.05 BAC, not .08 BAC).
School carry (K-12)
Concealed firearm permittees, those with administrative permission, or a weapon in a vehicle, is legal (76-10-505.5). Child care facilities and pre-schools are also considered schools. Open carry is legal (see details). Provisional permittees 18-20 may not carry in a public or private elementary or secondary school or on the grounds (53-5-710).
Campus carry (College/University)
Open and concealed carry on campus with a permit is legal for students and staff (76-10-505.5). Staff does not have to inform their supervisors they are carrying. Provisional permittees may carry at colleges and universities.
A person may not carry a loaded firearm in or on a vehicle unless the vehicle is in the person's lawful possession or the person is carrying the loaded firearm in a vehicle with the consent of the person lawfully in possession of the vehicle. Basically, in your own car, or if the driver is okay with you having a loaded gun, loaded cary carry is legal. 76-10-501(18)
Churches (and houses of worship) may choose to prohibit firearms (76-10-530). The Church of Jesus Christ of Latter-day Saints prohibits firearms on all its property. BCI page here.
Employee protection/parking lots
Employers or private property owners may prohibit possession of firearms, but cannot ban them from vehicles in parking lots unless their is other parking reasonably available or secure storage is provided. 34-45-103
No firearms in any airport secure area located beyond the main area where the public generally buys tickets, checks and retrieves luggage. This is past the TSA security checkpoints. At least one notice shall be prominently displayed at each entrance to a secure area in which a is restricted. 76-10-529 and 53-5-710
You cannot carry a concealed firearm, unless you have a concealed firearm permit on a bus, train, or mass transit (TRAX, Frontrunner, UTA, etc.). 76-10-1504
It is legal to carry a loaded firearm, concealed or unconcealed, in your own home or on your own property without a permit.