More than 3.2 million airline passengers in the United States have been hit by flight delays or cancellations since a government shutdown began on October 1. An airline group announced on Monday that air traffic controller staffing shortages are driving these widespread disruptions, leaving travelers uncertain about when normal operations will resume.

Houston airport officials are cautioning travelers that security checkpoint lines at George Bush Intercontinental Airport could surpass three hours. The ongoing government shutdown continues to exacerbate these TSA delays, making travel a trying experience for many.

Heathrow Airport is currently experiencing technical disruptions in its check-in and boarding systems, causing potential delays for travelers. Authorities are actively working to restore normal operations and minimize inconveniences for passengers.

In a sudden move, South African Airways (SAA) grounded six flights at three of South Africa’s busiest airports. The cancellations at OR Tambo, King Shaka, and Cape Town International Airport have disrupted travel plans and left many passengers facing delays.