On Friday, July 3, 2026, Chicago O’Hare International Airport (ORD), United Airlines’ largest hub, recorded the highest worldwide flight cancellations and delays. FAA ground stops and ground delays triggered by severe thunderstorms in the Chicago area caused more than 600 flight cancellations and over 1,000 delays, according to FlightAware data.
ORD Records Most Disruptions Globally
United Airlines canceled 4% of its scheduled flights at ORD on July 3 and delayed nearly one-third, making it the major airline with the most cancellations worldwide that day. The FAA’s Air Traffic Control System Command Center confirmed continuous ground stops and delays throughout the day impacting operations at ORD.
Regional carriers also saw significant disruption, with Utah-based SkyWest experiencing more cancellations than United Airlines, and Missouri’s GoJet Airlines, operating as United Express, reporting noticeable delays.
Flight Diversions and Passenger Delays
Severe storms forced some flights inbound to ORD to divert. American Airlines flight 836, originating in Charlotte, departed 7.5 hours late before diverting to Minneapolis due to unsafe weather conditions near Chicago. Kansas City International Airport (MCI) received multiple diverted flights destined for ORD, temporarily increasing passenger congestion there.
Passengers at ORD faced extended tarmac delays. One traveler reported being stuck on the tarmac for three hours, while another spent more than two hours
waiting before their flight was canceled and rescheduled for 7 a.m. the following day after originally supposed to depart at 8 p.m.
Delayed Operations Persist into July 4
As of 6:30 a.m. local time on Saturday, July 4, disruptions continued at ORD. FlightAware reported 16 canceled departures, 49 delayed departures, 86 canceled arrivals, and 60 delayed arrivals. United Airlines specifically had 85 canceled flights and 57 delayed flights at ORD by that time.
The U.S. National Weather Service issued flood warnings for Chicago starting 1:51 a.m. through noon on July 4, with up to 2.5 inches of rain falling during earlier storms. AccuWeather forecasts ongoing thunderstorms
and heat dome conditions across the central and eastern United States, indicating that travel disruptions may continue through the Independence Day holiday weekend.
Related Airport Disruptions and Airline Policies
Recent weather-related problems also affected Florida airports including Orlando International Airport (MCO) and Miami International Airport (MIA). On June 27, approximately 800 passengers at MCO experienced baggage claim delays exceeding five hours. Allegations that Virgin Atlantic staff threatened passengers with arrest if they left without their luggage were denied by Virgin Atlantic and the Greater Orlando Aviation Authority.
The U.S. Customs and Border Protection agency clarified delays at MCO resulted from extended baggage wait times affecting customs
processing, not law enforcement actions against passengers.
Most major U.S. carriers, including United Airlines, have implemented weather waivers during this period, allowing travelers to change flights for free, cancel for eCredits, or receive cash refunds for cancellations. However, the U.S. Department of Transportation states airlines are not legally required to compensate passengers for delays or cancellations caused by weather, nor to provide amenities like meals or hotels.
DOT advises that passengers should understand airlines do not guarantee schedules and that weather is classified as an uncontrollable event exempting carriers from mandatory compensation requirements.
