Can I transfer miles from Sun Country Airlines to another airline?
Share your experience with Sun Country Airlines' partner airlines support
It's not clear whether Sun Country Airlines is partnered with any other airlines but you can see this page for additional information.
Also check their homepage for more information.
Learn more at suncountry.com.
Update: we've found 106 more airlines stores that currently offer partner airlines and 106 travel & events stores that are offering partner airlines . You can also view all 106 stores that offer partner airlines across all categories.