Over 1,537 flights in the U.S. experienced delays and 61 cancelled due to widespread travel disruptions. The Nor'easter threats caused additional delays on October 21. Ground delays piled up at East Coast airports, prompting airlines to issue waivers for Friday operations. Travelers faced significant delays as airlines worked to restore services. Carriers reported that the severe weather had a substantial impact on flight schedules. Travelers were advised to check their flight statuses before heading to the airport. The disruptions were expected to continue into the weekend, causing further annoyance for those with travel plans. Carriers are working to minimize the impact of the Nor'easter on their operations. Travelers are encouraged to monitor their flight statuses as the situation develops. The disruptions highlight the difficulties faced by airlines during severe weather events. Passengers are advised to allow extra time for their journeys due to the disruptions. Carriers are working to resume normal operations as quickly as possible. The disruptions have caused significant annoyance for those with travel plans. Passengers are encouraged to stay updated their flight statuses as the situation continues to evolve. The delays are expected to persist into the weekend, causing further annoyance for those with travel plans.