To access the complimentary Wi-Fi service at Salt Lake City International Airport (SLC), begin by opening your device's wireless network settings. Locate and choose the network named SLCAirport.wifi from the list. Afterward, initiate the connection by clicking the "Connect" option. This action will prompt the SLC Airport wifi login page. To continue, simply press "YES" to agree to the terms. Once accepted, click "Connect" again to gain access to the free airport Wi-Fi. Following this, you will be directed to the homepage of Salt Lake City International Airport, allowing you to navigate to your desired online destination hassle-free.