The high fares is what is attracting Frontier! They're pulling out of Boston because of its low yields and coming to Tucson.
The charge to any hub airport like Denver is very high from nearly any city....we all suffer the same.....
Also, checked the sites and Tucson-Denver is only $209 on an advance purchase fare....
[This message has been edited by WebTraveler (edited 08-12-2002).]