As a very regular IAD-JFK traveler (weekly), I must say that B6 has been screwing with the schedule like crazy this year. Flights come in and out like mad - I've bought / schedule changed / refunded / rebooked the same flight at least three times this year in three different months because B6 can't figure out if they want to serve this market or not. I get that it's been a tough year, and I get that maybe this isn't a compelling stage length for them, but I'm tired of getting dumped onto a totally unsuitable flight after my opportunity to buy a competitively priced flight on Another Carrier has already passed.
That said, it still beats CO IAD-EWR