On May 17, 2007, Midwest Airlines signed a Memorandum of Understanding with Northwest Airlines to form a codeshare agreement with them. The codeshare agreement added 250 city pairs and 1,000 new flight options for Midwest Airlines customers. Northwest routes that included the Midwest Airlines YX code were destinations beyond Northwest's hubs at Detroit, Minneapolis/St. Paul and Memphis throughout the United States and Canada. Midwest placed its code on Northwest flights from Indianapolis, then a Northwest focus city, as well as a number of Northwest-operated flights to Hawaii and Alaska. Routes operated by Midwest Airlines that carried the NW Northwest code were flights that connected at Midwest's Milwaukee and Kansas City hubs, as well as Omaha, a Midwest focus city. Northwest also code shared on Midwest Airlines-operated flights between Milwaukee and Kansas City to Atlanta, Boston, Hartford, Los Angeles and San Francisco that connected to the Northwest/KLM trans-Atlantic network and trans-Pacific network.
On May 17, 2007, Midwest Airlines signed a Memorandum of Understanding with Northwest Airlines to form a codeshare agreement with them. The codeshare agreement added 250 city pairs and 1,000 new flight options for Midwest Airlines customers Northwest routes that included the Midwest Airlines YX code were destinations beyond Northwest's hubs at Detroit, Minneapolis/St. Paul and Memphis throughout the United States and Canada Midwest placed its code on Northwest flights from Indianapolis, then a Northwest focus city, as well as a number of Northwest-operated flights to Hawaii and Alaska. Routes operated by Midwest Airlines that carried the NW Northwest code were flights that connected at Midwest's Milwaukee and Kansas City hubs, as well as Omaha, a Midwest focus city. Northwest also code shared on Midwest Airlines-operated flights between Milwaukee and Kansas City to Atlanta, Boston, Hartford, Los Angeles and San Francisco that connected to the Northwest/KLM trans-Atlantic network and trans-Pacific network.