July 28, 2026
O'Hare's ground delay program extended to 3 AM with arrivals averaging nearly 7 hours, while New York's disruption eases
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The 9 PM update: the FAA extended O'Hare's ground delay program from 10:29 PM to 2:59 AM Eastern with arrivals averaging 6 hours 59 minutes, Chicago airports report 865 O'Hare plus 91 Midway cancellations totaling 956, while New York eases as LaGuardia's GDP is cancelled to miles-in-trail management, N90 starts accepting traffic, and Newark exits its ground stop, though JFK, Newark and Philadelphia GDPs continue through late evening.
The disruption story has split in two directions since the 5:58 PM update. Chicago's severe-storm day has deepened, not wound down, while the New York staffing-and-weather constraint that dominated the afternoon is beginning to ease.
O'Hare's delay program runs to 3 AM as Chicago cancellations top 950
The FAA's latest operations plan (ADVZY 193, event 28/0000Z and later) revised and extended O'Hare's ground delay program from its previous 10:29 PM Eastern end time to 2:59 AM Tuesday. The FAA's own airport status page (updated 9:00 PM ET) reports arrival delays averaging 6 hours and 59 minutes, meaning flights destined for O'Hare are being held at their departure airports for nearly seven hours before they can take off. Airborne arrival delays are 15 minutes or less.
NBC Chicago (published 8:35 PM ET, citing the Chicago Department of Aviation) reports at least 865 flights canceled at O'Hare and 91 at Midway, totaling 956 at Chicago's airports, with delays of more than 90 minutes still being reported at O'Hare. Ground stops were first issued at both airports around noon and lasted for several hours as severe thunderstorms, tornado warnings, and damaging winds hammered the region, as NBC Chicago reported this afternoon.
The GDP extension means the program runs about five and a half hours longer than the end time the afternoon issue reported. Travelers with Tuesday morning departures or connections through O'Hare should expect residual disruption as airlines reposition aircraft and crews overnight.
New York eases: LaGuardia's GDP cancelled, gates reopening
The FAA advisory says LaGuardia's ground delay program was cancelled and will be managed with miles-in-trail spacing instead, and that N90, the New York terminal radar approach control, advises it can start accepting traffic again. Departure gate availability is improving and restrictions have eased. Newark exited its ground stop into a GDP revision, and the JFK ground stop was extended for departures from Chicago, Cleveland, and Minneapolis centers only, while the broader stop has ended.
Three ground delay programs continue running: Newark until 11:29 PM Eastern, Philadelphia until 11:59 PM, and JFK until 12:59 AM Tuesday. The JFK program was attributed to a ZNY staffing constraint compounded by thunderstorms. Bloomberg Law reported the FAA's statement that it was "slowing flights into John F. Kennedy, LaGuardia, Newark Liberty and Philadelphia International airports due to severe weather and staffing constraints at the New York Air Route Traffic Control Center."
FlightAware shows Newark departure delays averaging 1 hour 9 minutes and increasing, Boston departures at 41 minutes and decreasing, and Dulles departures at 52 minutes and increasing. FlightQueue estimates 253 JFK, 195 Newark, and 164 LaGuardia cancellations, though its modeled estimates lag actual counts at Chicago.
Staffing triggers continue but narrow
The FAA advisory lists staffing triggers still active through the overnight: A90 TRACON, covering Boston, until 10 PM Eastern. ZJX Central, covering Jacksonville, until midnight. ZKC Prairie Area, covering Kansas City, until 11:30 PM. F11 TRACON until midnight. ZDC Area 1, covering Washington, from 10 PM to midnight. Tampa operations expire at 9 PM. ZNY TMU remains staffing-constrained until 11 PM. Cleveland and Boston centers will stay in internal stops.
The staffing triggers continue on their scheduled timelines, with Washington Center's Area 1 newly added from 10 PM to midnight. But the New York staffing constraint that drove the afternoon and evening ground delay programs is easing as N90 resumes accepting traffic, and the acute ground-stop phase has passed.
Tonight's watch and rebooking
Denver remains the only airport in the FAA's terminal planned list for a possible ground stop or delay program, with a window until 10 PM Eastern. An east-to-Denver flow-constrained area, FCA005, has been published until 10:30 PM. Miami and Fort Lauderdale, which were on the watch list earlier, have dropped off. The next FAA planning webinar is at 9:15 PM Eastern.
Delta's New York City weather waiver remains the only confirmed carrier waiver, covering Newark, JFK, LaGuardia, and White Plains for July 27-28 travel with rebooking through July 31. American Airlines shows no July 27 waiver, with its page current as of July 25 and covering only July 25-26 travel. No United July 27 waiver has been posted. Travelers through Chicago or New York tonight should check their carrier's flight status and advisory page directly, as no airline has posted a waiver matching today's disruption scope.
That’s the reading for this issue.
- JFK and Newark ground stops re-fired into the evening as the ATC staffing constraint spread past New York Center to Boston, Jacksonville, Kansas City and the F11 TRACON, with Dulles cycled through a stop and O'Hare's delay program revised Jul 27
- JFK, LaGuardia, Newark, and Philadelphia are now under ground delay programs on a ZNY staffing constraint, with LaGuardia also ground-stopped and O'Hare and Midway re-stopped by a line of storms overhead Jul 27
- O'Hare's ground stop is set to hand off to a 132-minute ground delay program as Chicago's severe-storm day goes live, with Atlanta already cycled through a stop and JFK/LGA programs convening next Jul 27
- O'Hare and Midway are flagged for morning thunderstorm impacts today as Chicago heads into an SPC Enhanced Risk severe-storm day Jul 27
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