My advice as a frequent flyer is to check the smaller airlines like Southwest, Jet Blue and then try Orbitz, travelosity expedia to find which airlines are providing the price and schedule you want. If its American go on their website and look for the best deals. You can see how full the plane is by putting a reservation on hold and looking at seat selections available. Putting a reservation on hold is not the same as purchasing and if you take no further action the request will expire harmlessly. I like to go non stop only so Southwest is my only option from Providence. I put myself on their system and book immediately at the opening of the booking window.