Originally Posted by
PDXPremier
It looks like none of the AS partners fly to Dickinson, ND so you'll need to try and figure something out with your UA miles since they fly there. I'm actually kinda surprised DL doesn't fly to Dickinson, ND since I thought they had a virtual monopoly on most small towns (with air service) in North and South Dakota...they were my only choice for my flight to the small town of Aberdeen, SD next summer.
From the Wikipedia article on the airport "Delta Connection formerly offered service to Minneapolis-St. Paul but ended service on November 30, 2015, due to low passenger loads."