Core Viewpoint - A severe snowstorm has caused significant disruptions to air travel in major airports across the Eastern United States, with cancellations expected to continue into Tuesday, testing airlines' recovery capabilities during the holiday season [2][7]. Group 1: Weather Impact - The National Weather Service has issued blizzard warnings for much of the East Coast, with areas in New Jersey and Long Island experiencing nearly 2 feet of snow accumulation [9]. - Strong winds are expected to persist throughout the day, leading to extremely low visibility and dangerous travel conditions [9]. Group 2: Flight Cancellations - As of 9:40 AM Eastern Time on Monday, over 4,800 domestic flights had been canceled, representing nearly 20% of the day's planned flights, compared to a typical cancellation rate of around 1% [9]. - Nearly a quarter of inbound international flights were also canceled [9]. - LaGuardia Airport saw over 1,000 flight cancellations, approximately 98% of its scheduled flights, while Boston Logan International Airport canceled over 90% of its flights, and Philadelphia International Airport and Newark Liberty International Airport canceled over 80% [9]. Group 3: Airline Responses - Airlines such as American Airlines, Delta Air Lines, JetBlue Airways, Spirit Airlines, and United Airlines have waived change fees and fare differences for passengers, allowing rescheduling until February 26 [11]. - Southwest Airlines has also allowed passengers to rebook or standby within two weeks without fare differences [11]. - The previous winter storm in January caused significant operational challenges for American Airlines, leading to losses estimated between $150 million and $200 million [11].