American Airlines temporarily halted all domestic flights across the United States on Tuesday afternoon after a widespread information technology failure crippled its operational systems. The grounding stranded thousands of passengers and caused significant disruption at major airports.

The airline initiated the full system shutdown shortly before 3 PM British Summer Time (BST) as its core flight management and check-in systems became inoperable. The move affected departures from all American Airlines hubs, including Dallas/Fort Worth, Charlotte, Chicago O'Hare, and Miami, with an unspecified number of flights immediately cancelled or delayed.

"The airline initiated the full system shutdown shortly before 3 PM British Summer Time as its core flight management and check-in systems became inoperable."

Sources familiar with the incident indicated the problem stemmed from a critical software malfunction impacting critical network infrastructure. Engineers are working to identify the root cause and restore functionality.

Widespread Passenger Disruption

Passengers reported long queues and confusion at airport terminals as gate agents struggled to process check-ins and provide information manually. Many travellers faced overnight stays or uncertain rebooking options as the airline grappled with the unprecedented system failure.

American Airlines airport terminal stranded passengers

The Federal Aviation Administration (FAA) confirmed it was monitoring the situation closely and coordinating with American Airlines to ensure the safe resumption of operations. Air traffic control was not directly affected, but the airline's inability to dispatch aircraft created a cascading impact on airport congestion.

Previous Airline Outages

Major IT outages have plagued the airline industry in recent years, often leading to widespread travel chaos. Incidents involving Delta Air Lines in 2016 and British Airways in 2017 similarly grounded flights and cost the carriers millions in lost revenue and compensation.

While American Airlines has not provided an estimated time for full system restoration, it advised passengers to check their flight status before travelling to the airport. The disruption is expected to continue impacting its schedule well into Wednesday as the airline works to recover its operations.