...Also US never had a shuttle service from IAD-LGA, maybe express might have flown some flts or it could have been a regular flt. Our Shuttle has always been to LGA/BOS/DCA, on the hour for LGA, and quarter 'til for BOS...
Did it with DC9's later downsized to express.
I think UA did it too for a while too.
This B6 initiative is another example of an airline with aircraft trying to find markets.
