Follow live updates as flight reductions begin today at 40 high-traffic airports in what officials have described as a "proactive" effort to alleviate pressure points.

The FAA ordered airlines to cut thousands of flights as the agency deals with air traffic controller shortages during the government shutdown. The cuts began Friday morning.

Several airlines at Orlando International Airport (MCO) said they are offering flight changes, re-bookings, cancellations or refunds without penalty to customers affected by the Federal Aviation Administration's decision to reduce air traffic by 10% at 40 airports.

Major airlines are complying with the FAA's call to reduce flight schedules starting Friday, with some carriers already beginning to cancel flights.

The FAA confirmed that the temporary limits affected about 4% of flights nationwide, including 27 destinations served by JAX.

As airlines work to comply with the FAA order to cut flights at 40 major airports, carriers are working to minimize the disruption to customers.

The government shutdown has triggered 1,000-plus flight delays as the FAA cuts capacity at 40 airports. Airlines are offering refunds and policy changes amid ongoing travel disruptions.