The FAA imposed ground stops on August 4, 2026, at major U.S. airports, leading to thousands of canceled flights nationwide. These stops disrupted airline schedules and impacted passenger travel plans across the United States.
Flight cancellations occurred at Phoenix Sky Harbor Airport on August 4, 2026 due to a labor dispute. WestJet led global cancellations on August 3, 2026 amid a flight attendant strike.
On August 3, 2026, WestJet flight attendants launched a strike grounding around 600 flights and affecting 250,000 passengers across Canada. The strike follows failed negotiations despite a wage and benefits proposal from WestJet.