( CNN ) -- Flying JetBlue Airways ? You might have to wait until your flight crew rests up if your travel includes Boston 's Logan International Airport or the three New York City-area airports . Blaming a weekend of bad winter weather and new Federal Aviation Administration rules on pilot duty times , JetBlue canceled nearly all operations from Monday afternoon into Tuesday morning at Logan , New York 's John F. Kennedy International and LaGuardia airports , and Newark Liberty International Airport in New Jersey . JetBlue , the only airline to say publicly that the new pilot rest rules contributed to its cancellation of flights during this week 's winter blast , had asked regulators for a delay in implementing the changes . FAA spokeswoman Laura Brown said that JetBlue last year requested an extension to the January 4 , 2014 , implementation deadline . JetBlue was the only airline to request an extension , she said . The FAA denied the airline 's request . On Tuesday morning , JetBlue planned to ramp up operations to about 25 % of its regular schedule and expected to become 100 % operational by 3 p.m . ET , according to JetBlue spokesman Anders Lindstrom . Lindstrom said Tuesday that the new scheduling rules related to pilot rest time `` are a factor , not a driver , in our recovery from two winter storms and JFK infrastructure issues . '' Statements from the airline on Monday suggested the pilot rules were a bigger factor in the carrier 's near-halt in the Northeast . While saying JetBlue was prepared for the new rules that increase rest requirements for pilots , scheduling pilots and crews is a `` delicate '' operation under normal circumstances , spokeswoman Tamara Young wrote via e-mail . `` Delays or cancellations disrupt those handoffs placing crews or planes 'out of position ' for their flights . '' `` In the midst of us repairing those schedules disrupted by this week 's winter storms , we 're facing an additional challenge as new FAA rules went into effect for crew rest , '' she wrote . `` These rules further impact our ability to operate an already disrupted schedule , causing our pilots to 'time out ' even sooner . As a result , additional cancellations are likely to occur as we work to reset the operation . '' More than 400 JetBlue flights were canceled Monday , with 120 flight cancellations on Tuesday , the airline said . Nationwide , more than 4,500 flights were canceled Monday , and more than 2,300 flights have been canceled for Tuesday , according to flight tracking site FlightAware.com . JetBlue said it is scheduling extra flights to address the backlog and will extend apologies and compensation offers to passengers . Passengers whose flights have been canceled should not go to the airport , the airline said . The airline has compiled its advice to stranded passengers in a blog post , with links to the fee waiver policy and rebooking page . The FAA announced the pilot changes in December 2011 , and they went into effect Saturday . Pilot fatigue became a top priority for the Department of Transportation , which oversees the FAA , after the February 2009 crash of Colgan Air Flight 3407 near Buffalo , New York . The new rules require a minimum 10-hour rest period for pilots before their flight duty period , which can range from nine to 14 hours , depending on the start time and the number of flight segments and time zones crossed . While other U.S. airlines are delaying and canceling thousands of flights because of severe weather patterns , no other major U.S. airline contacted by CNN has cited the new rules as a cause . An airline pilots union said the airlines had sufficient time to adjust to the new FAA work rules . `` They had two years to anticipate this ( work hour rule ) and to adjust accordingly , '' said Sean Cassidy , vice president of the Air Line Pilots Association . `` So I think it 's overly simplistic to suggest that they could ascribe this disruption -- which happens to coincide with this major , major winter snowstorm -- and just hang it all on that rule-making change . '' While the new pilot rest rules may be one of the many things that have disrupted air travel this week , ThePointsGuy.com 's Brian Kelly said the airlines are looking to blame others for not hiring enough pilots to withstand disruptions to their schedules . `` The rules are necessary for passenger safety , ( and ) the airlines have had years to prepare , '' he said . At the end of the day , `` the airlines really ca n't withstand irregular events like these , '' Kelly said . `` They have really bad emergency management plans in place . '' CNN 's Mike Ahlers and Aaron Cooper contributed to this report .
JetBlue blamed severe weather and new pilot training for delays and cancellations . The pilots union says pilots have had two years to prepare for new rest requirements . Travel Week says airlines are ill - prepared for ` ` irregular '' travel events .