Just saw this this morning:
http://www.bizjournals.com/denver/ne...s-expedia.html
I guess I can understand why they want to steer people to booking through their website. However I'll never forget the time I was trying to book a route like SEA-BKG (the DEN-BKG route can be premium-priced esp. during the Summer months) and the FlyFrontier website had a much-higher price while Priceline had a steep discount on the same route to the tune of several hundred dollars cheaper. I booked from Priceline needless to say, they put us in the very back row "next to the bathroom with no reclining" seats but with the money I saved, didn't really mind...
Point being that Frontier will probably still sometimes put up competitive ticket prices on the aggregators that are cheaper than what's on their website. It pays to check the prices just to be sure. I usually check FlyFrontier first and then double-check a couple of places like Priceline, Travelocity, etc. Though the cutback of frequent flier miles is a slight disappointment - in the above mentioned flight I got full double miles through my Frontier Mastercard for the purchase as well as full mileage for the trip itself, guess we won't see that anymore...
Any thoughts about this development? Is Frontier going to dump other booking sites in the future and try to move to a Southwest-like model?