The Federal Aviation Administration is cutting flights at 40 U.S. airports beginning Friday, Nov. 7, as air traffic controllers and TSA agents continue to go unpaid during the government shutdown.

Beginning next week, daytime rocket launches are all officially scrubbed thanks to the government shutdown.

Airlines are canceling hundreds of flights to comply with the FAA's order. But there are still questions about the plan, which the agency says will keep the skies safe during the government shutdown.

One travel rep warns that 40% of flights could be delayed as the longest government shutdown in history snarls air travel. Airlines say they will be flexible when it comes to letting passengers change or cancel their plans.

The Federal Aviation Administration has ordered traffic to be reduced at 40 major airports to help keep skies safe as the government shutdown drags on. The cutbacks come ahead of a popular holiday-travel weekend for those who get Veterans Day off.

Oakland International Airport, the other Bay Area airport affected by FAA flight reductions, had at least 12 cancellations on Friday morning, and 15 delays so far.

Sara Nelson, president of the Association of Flight Attendants, joins Morning Joe as hundreds of flights are canceled amid the ongoing government shutdown, warning the system is “unsustainable” and that people “will break” if air traffic workers remain unpaid.

TSA wait times at George Bush Intercontinental Airport were expected to exceed 45 minutes to an hour, according to airport officials.