Why you'll love it
If you love the outdoors, Boulder is for you. Take in views of the Flatirons -- the city's famous peaks -- on a hike through Chautauqua Park. Or drive 40 minutes to Eldorado Canyon State Park for rock climbing and fly-fishing. The eco-minded city just launched a $5-a-day bike-sharing program, and you won't want to miss a ride on the Boulder Creek Path. When you need a rest, browse the shops and grab some grub at the Pearl Street pedestrian mall.
Why it's a deal
Boulder is a 45-minute drive from the Denver airport, which is the main hub for discount carrier Frontier, a major hub for United, and Southwest's fastest-growing market. The sheer number of daily flights pushes Denver's average airfare below the national average.
Where to stay
Commune with nature at the Chautauqua Cottages (chautauqua.com; starting at $123 a night in summer), located at the foot of the Flatirons.
