As stated above, JetBlue has about the worst on-time performance among US airlines.
They have given up for this weekend and cancelled 23% of their flights to try to get back on schedule.
All Saturday and Sunday JetBlue flights were canceled in and out of 11 airports: Richmond, Va.; Pittsburgh; Charlotte and Raleigh/Durham, N.C.; Jacksonville, Fla.; Austin and Houston, Texas; Columbus, Ohio; Nashville; Portland, Me.; and Bermuda.
Officials also warned additional cancellations were possible and told travelers to call ahead before heading to the airport. Affected customers may receive refunds or rebook their flights, the airline said.
JetBlue's problems aren't just because they are a low-fare airline. It must be more systemic than that.
Low-priced Southwest has among the best on-time records, but they don't try to serve some airports like JFK with a record of delays.