| MDW - |
Chicago Midway |
| ORD - |
Chicago O Hare Intl. |
| MSN - |
Madison - Dane County Regional |
| MKE - |
Milwaukee - General Mitchell Intl. |
| MSP - |
Minneapolis-St. Paul Intl. |
| ATW - |
Outagamie County Regional |
| GRB - |
Austin Straubel Intl Airport |
| CWA - |
Central Wisconsin Airport |
