Storms and UK air traffic control failure disrupt over 14,600 flights across the US and Europe

Disruption overview

A fresh round of disruption that began on 2 September 2026 has affected more than 14,663 flights across the United States and Europe, with severe thunderstorms driving widespread delays in the US and a UK air traffic control system failure canceling more than 2,000 flights across Britain. Airports including Boston Logan International Airport, Dallas Fort Worth International Airport, John F. Kennedy International Airport, Chicago O'Hare International Airport, London Heathrow Airport, London Gatwick Airport, and London Stansted Airport have all seen knock-on disruption, leaving passengers to deal with missed connections, rebookings, and long waits. Because these problems were outside airline control, compensation is usually unlikely. Even so, airlines should still provide care and assistance such as rebooking, refreshments, and accommodation when needed.

Get flight compensation

Check if the airline owes you money for your delayed or canceled flight

Disruption details

A new wave of flight disruption that began on 2 September 2026 has continued through the week of 11 September, affecting more than 14,663 flights across the United States and Europe.

Severe thunderstorms in the US and a UK air traffic control system failure have put major pressure on airports including Boston Logan International Airport, Dallas Fort Worth International Airport, Ronald Reagan Washington National Airport, John F. Kennedy International Airport, Los Angeles International Airport, London Heathrow Airport, London Gatwick Airport, and London Stansted Airport. Lingering staffing and capacity constraints have also left airlines with less room to recover once schedules started slipping.

For passengers, this has meant late departures, short-notice cancellations, missed onward connections, and long waits even when flights still operated. In many cases, disruption at one airport quickly spread across wider airline networks.

In the US, disruption built quickly in the first days of the month. Over a two-day stretch, more than 2,300 flights were delayed and about 150 were canceled within, into, or out of US airspace. Bottlenecks were centered on Boston, Dallas, Washington, New York, and Los Angeles, while broader weather restrictions pushed delays well beyond the airports hit by the worst storms.

The week was especially severe on three separate days:

• On 2 September, airlines recorded about 900 delays and 200 cancellations.

• On 3 September, severe storms around Chicago and Florida led to at least 283 cancellations and roughly 6,750 delays.

• On 4 September, the network was still under strain, with nearly 2,000 delays and close to 80 cancellations.

The storms on 3 September were the clearest example of how quickly weather can ripple through a flight network. AirHelp calculated that more than 7,000 flights were affected across Chicago O'Hare International Airport, Chicago Midway International Airport, Orlando International Airport, Miami International Airport, and Fort Lauderdale–Hollywood International Airport alone. Even if your flight wasn't canceled, there was a good chance it was still hit by late incoming aircraft, delayed crews, or airspace restrictions.

The Federal Aviation Administration issued multiple ground-delay programs and departure holds as thunderstorms rolled through New York, Philadelphia International Airport, Washington, Chicago, George Bush Intercontinental Airport, Detroit Metropolitan Wayne County Airport, Louis Armstrong New Orleans International Airport, and several Florida airports. That meant some flights left hours late simply because the wider system was out of sequence.

Europe faced a different problem early in the week when Britain's National Air Traffic Services suffered a flight-processing system breakdown. The technical fault was resolved within hours, but the disruption didn't end there. More than 2,000 flights were canceled over the following two days across at least 15 airports, including London Heathrow Airport, London Gatwick Airport, and London Stansted Airport.

For travelers crossing Europe, the impact stretched well beyond the UK. Separate tracking on 7 September showed Paris Charles de Gaulle Airport and Frankfurt Airport leading a list of 16 major hubs dealing with high delay volumes linked to the outage. Tens of thousands of people were stranded or missed onward connections, and displaced aircraft and crews slowed the recovery further.

Carriers are rebooking affected passengers, but recovery is likely to stay uneven while storms remain in the forecast for parts of the US and European airlines work to reposition aircraft and crew. If you're flying in the next few days, it's worth allowing extra connection time, checking your airline's app regularly, and preparing for short-notice schedule changes.

Because this round of disruption has been driven by severe weather and air traffic control problems outside the airline's control, compensation is usually unlikely. In Europe, EC 261 still gives you the right to care and assistance, which can include meals, refreshments, accommodation when needed, and rerouting or a refund if your flight is canceled. In the US, Department of Transportation customer service commitments can also help you understand what rebooking, accommodation, or reimbursement support your airline should offer.

Although compensation is unlikely here, that doesn't mean you're without support. Your airline should still help you through the disruption, and if you'd like to check what may apply to your journey, AirHelp's free flight checker is a simple place to start.

Protect your future trips with AirHelp+

Secure your flights, luggage and get lounge access