I know Frontier has a history over at MKE through Midwest and then closing the hub, but I think people might have a short memory.

Would the Indigo operated Frontier be able to compete against Southwest, possibly on the MKE-MCO primarily as an ULCC? Better service than Spirit but less amenities than Southwest. Maybe also consider MKE-FLL and MKE-TPA and UST routes?

Even though Southwest emerged as the winner for MKE by way of acquiring AirTran, from what I see, Southwest has a lot of east-west flow at MKE but isn't that strong on MKE-South to have advantages with connection traffic either thru MKE or in the Florida destination on the nonstop routes. Frontier might be able to compete on lower costs and selling lower fares.

Also, I was wondering if the new Frontier would consider MKE-PIT? I'd think if it priced it around $50 intro fares, many from PIT area would use it as a way to reach Chicago. There is no carrier on this route, and Southwest only sells an awkward MKE-BWI-PIT routing. MKE-RDU might be another route as F9 does opportunistic flying from RDU and maybe MKE-CLE as well against United's high fares.

Frontier currently operates 3-2x daily on MKE-DEN and 3x weekly on MKE-TTN. I questioned the MKE-TTN route with the Monday, Wednesday, Friday schedule, but maybe MKE can grow to be a bigger operation under the new Frontier.