Air Travel Rates/Day ?.....

[prcoamo]

For those who frequently air travel Is it more expensive to fly out on say a Monday or Tuesday than any other day of the week? Which days of the week are less expensive to fly out on/return on?

P.S. - I'm in NY area. I'd like to book JetBlue but our travel dates are not till end of Sept and JetBlue only has schedules/rates posted up till 6th of Sept (hope they update this soon)

Thank you