(Minneapolis, MN) -- Spirit Airlines is starting a new low-fare service between Minneapolis-St.Paul International and Denver this spring. Spirit's website shows one-way flights to Colorado for less than 40 dollars. Air travelers will have to pay for carry-on luggage and checked bags. The new direct flights will depart daily from MSP at 2:05 pm beginning on April 25th. Spirit currently offers non-stop flights to Chicago, Fort Lauderdale, Fort Myers and Las Vegas. They will also start offering non-stop flights from Minneapolis to Dallas/Fort Worth on April 4th.