Checking in for your Sun Country flight at MSP is usually quick and efficient. There are self-service kiosks available for travelers who prefer to skip the line and move through the process on their own. You can print your boarding pass, tag your bags, and be on your way to security in minutes. Prefer personal assistance? No problem. The Sun Country team is friendly and helpful, re... https://terminalfinds.com/frontier-airlines-sfo-terminal/