Midwest Airlines
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| Founded | 1948 (as K-C Aviation) Neenah, Wisconsin | ||||||
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| Commenced operations | 
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| Ceased operations | November 2010 (merged into Frontier Airlines) | ||||||
| Hubs | Milwaukee | ||||||
| Focus cities | |||||||
| Frequent-flyer program | Midwest Miles | ||||||
| Parent company | |||||||
| Headquarters | Oak Creek, Wisconsin, U.S. | ||||||
| Key people | |||||||
Midwest Airlines (formerly Midwest Express Airlines) was an airline in the United States headquartered in Oak Creek, Wisconsin, that operated from Milwaukee Mitchell International Airport between 1984 and 2010. For a short time, it also operated as a brand of Republic Airways Holdings.
Operations as an independent airline ceased in November 2010, upon its merger with Frontier Airlines.