I don't know Knope Airtran kept MKE-SFO, MKE-SEA, MKE-LAX year round. I do not know how well they did in the winter but Airtran has not made any changes to their schedule yet thus one could assume that they are likely to keep the west coast routes year round. Why would Frontier let airtran take that traffic from them? I am not sure I buy the argument that they can feed MCI and DEN. I would buy that argument if they still had a code share with Delta but without that I think that those connecting passengers may be likely to try Delta or Southwest( which has the best west coast connections via PHX and LAS). I think that this is a bad decision. LA is a huge destination for business and travel. LA has great weather in the winter and can attract travelers who are sick of Florida (which is over priced: as you can see I am no Florida fan). The Bay area (my new home!!) has the second largest concentration of fortune 500 companies outside of the New York area. It is a key business destination and is a good leisure destination in the winter. SEA is an important destination as well. I think that frontier needs to grow these markets not shrink them. To me it is not a good idea to let Airtran and Southwest get the upper hand in the battle for Milwaukee