Originally Posted by
Nugget_Oz
I think he is talking about NYC which will be a chore. JFK and EWR are heavily weather dependent. With DEN being outside LGA's permitted zone there are only two airport options for direct flights. That means B6 and CO for direct flights. Connections are probably available through ORD for UA and AA but that's going to add time to the trip plus you have to factor in the ORD lottery.
DEN-LGA is exempt from the radius restrictions and is served by UA (752 usually), F9, and soon to be WN. I'm on the UA flights on a fairly regular basis, and they're fairly well timed in both directions for commuting (One of my offices is near DEN...).