Storms disrupt 2,510 flights at Boston, New York, and Chicago hubs

Disruption overview

Severe late-summer thunderstorms and low cloud disrupted operations at Boston Logan International Airport, John F. Kennedy International Airport, LaGuardia Airport, Newark Liberty International Airport, and Chicago O'Hare International Airport on 3 September 2026, causing 321 cancellations and 2,189 delays. The knock-on effect spread beyond those hubs as aircraft and crews fell out of position, leaving travelers facing missed connections and longer waits into the evening. If your trip is covered by EC 261, compensation is unlikely because the disruption was caused by weather outside the airline's control, but airlines should still provide care, rebooking, or a refund where needed.

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Disruption details

Severe late-summer thunderstorms and low cloud disrupted flights at Boston Logan International Airport, John F. Kennedy International Airport, LaGuardia Airport, Newark Liberty International Airport, and Chicago O'Hare International Airport on 3 September 2026, causing 321 cancellations and 2,189 delays. In total, 2,510 flights were affected across the busiest pressure points in Boston, New York, and Chicago.

For passengers, this meant missed connections, longer waits, and thousands of travelers stuck at some of the country's biggest connecting hubs. The worst disruption was concentrated at Boston, the three-airport New York system, and Chicago O'Hare, but the impact spread wider as aircraft and crews fell out of position through the day.

Air traffic managers had to increase the spacing between aircraft as visibility dropped and storm cells built along approach and departure routes. That reduced runway capacity and triggered ground delays, traffic restrictions, and occasional ground stops. When an aircraft or crew ran out of available duty time in one city, later flights elsewhere were often delayed or canceled as well.

These hubs are especially vulnerable when weather turns because they already operate close to capacity on a normal day:

• Boston Logan International Airport has seen repeated weather-related reliability problems this year, and ongoing runway and taxiway construction has reduced operational flexibility.

• In New York, John F. Kennedy International Airport, LaGuardia Airport, and Newark Liberty International Airport rely on tightly managed airspace, with staffing limits in air traffic control making recovery harder.

• Chicago O'Hare International Airport is a major interchange, so disruption there quickly spreads across Midwestern and transcontinental routes.

Even though the highest totals were centered on the main hubs, secondary airports across the United States also recorded above-average delays. If you were flying a spoke route with only one or two flights a day, you were especially exposed when the inbound aircraft never arrived.

By early evening, the storms were beginning to move eastward. But the disruption wasn't over. Earlier flow restrictions, plus crew limitations and aircraft repositioning, meant delays were expected to continue into late-night departure periods, with some knock-on impact also possible for early-morning schedules on 4 September.

Airports and airlines urged passengers to keep checking flight-status alerts, allow extra connection time, and, where possible, book earlier departures on days when storms are forecast. The disruption affected multiple domestic and international airlines serving these airports.

If your itinerary is covered by EC 261, compensation is unlikely because this disruption was caused by severe weather outside the airline's control. Even so, you may still be entitled to care and assistance, including rebooking or a refund, meals and refreshments during long waits, and accommodation if you're stranded overnight.

Although compensation is unlikely here, that doesn't mean you're without support. If your flight was delayed or canceled, you can use AirHelp's free flight checker to understand your rights and see what options may apply to your journey.

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