Flight delays were only a little higher than usual during most of October — but then a late month surge could spell trouble for holiday travel.

The federal government shutdown is being blamed for travel delays at major airports. How to check flight status and security wait times.

Air traffic controllers missed their first full paycheck last week as the government shutdown approaches a record length.

Two bomb threats in 24 hours, including one on a flight from Houston, have passengers asking the same question: Is it still safe to fly?

The government shutdown is taking a growing toll on air traffic controllers who are working without pay. Staffing shortages led to big delays over the weekend, raising concerns about travel chaos.

As of Sunday, air traffic control operations in the United States are experiencing significant flight delays at major airports, and it's likely going to get worse as the government shutdown continues.

With air traffic controllers working without pay, more than 5,000 flights were delayed nationwide over the weekend, including hundreds at San Francisco International Airport.

Controllers have urged air passengers to contact their representatives to end the shutdown. The transportation secretary also warned of consequences for travel, though he said the system remained safe.

Air travel isn’t without sustainability challenges, but advances in aircraft technology are charting a new course on the industry’s journey to net zero emissions by 2050. The development of more fuel-efficient planes—some of them with hybrid electric engines—is reshaping the future of commercial aviation.