As a flyer, you will want to enjoy all the airline's facilities when traveling on it. Sun Country Airlines, being a customer-centric airline, tries every way to satisfy them with its services. Now you can avail of the online services of Sun Country Airlines and change your flight online. Now, their concern is getting their flight changed for free.
https://flightcancellationpolicy.com/what-is-sun-country-airlines-flight-change-rules-fee