I'd suggest giving Frontier a try. There will be no food service, however. The 319's are comfortable and you may have Direct TV to watch ($5 charge and I don't believe all the airbuses have been retrofitted yet). Frontier uses concourse "A" in Denver, which means you can walk to the terminal and don't have to use the train. I like their FF program, Early Returns. Enroll online and receive 1500 miles to start. Free domestic ticket at 15,000 miles. They also have a new credit card partner. 7500 miles to sign up for that. Most of the employees you will encounter will be friendly. Did I cover everything?