United Airlines temporarily suspended all flights across the U.S. and Canada twice within a short period due to unspecified technological and connectivity problems. The first incident occurred on August 8, 2025, when the airline requested a ground stop that lasted several hours, citing a 'technology issue' that caused widespread delays at major airports including Newark, Denver, Houston, and Chicago. The recent incidents happened on September 24, 2025, when United Airlines asked the Federal Aviation Administration to issue a ground stop for about 30 minutes, citing a 'connectivity issue' just before midnight Central time. A similar brief suspension occurred early Wednesday morning, from 1 a.m. to 2:30 a.m. ET, also due to 'company request / technology,' leading to delays and cancellations, especially at Los Angeles International Airport. The airline confirmed that these disruptions were caused by brief technical glitches affecting its operations, with no reported injuries or further complications.