Troll Farm Airport (Cambridge, MN) 9MN1 Cartes IFR (règles des instruments de vol)
| 5 | KCBG | Cambridge Muni | Cambridge, MN |
| 13 | KROS | Rush City Rgnl | Rush City, MN |
| 20 | KJMR | Mora Muni | Mora, MN |
| 20 | KPNM | Princeton Muni | Princeton, MN |
| 29 | KGTG | Grantsburg Muni | Grantsburg, WI |
