Virgin America is flying from point to point as opposed to using a hub and spoke model like the larger US carriers. The point to point flights work well on regional hops but don’t think they work as well on coast to coast flights. The coast to coast flights cost too much to operate when you have planes that are 1/4 full.
Virgin America flies from NYC and Boston to Los Angeles and San Francisco. I have been going coast to coast on Delta an United for the past four months, and the coast to coast flights are rarely full. Although I haven’t been on a Virgin America flight but I can’t image they are packed or even 50% full.
United probably has the most loyal business travele customers and they can’t fill up the United P.S. flights which has less seats than Delta and other airlines due to the larger business class cabin. If you have Virgin America miles (I am not even sure how it works), I highly recommend you use them now before they go under like the Virgin retail stores. I don’t see how Richard Branson and his hedge fund partners are making money here.