(CNN) — Air traffic control issues are triggering hours-long flight delays to Florida airports, the Federal Aviation Administration told CNN.

“The FAA has slowed the volume of traffic into Florida airspace due to an air traffic computer issue that is being resolved,” the agency said in a statement.

A publicly available airspace status notice shows flight delays averaging two hours with a maximum delay of six hours.

The FAA says the issue is with the En Route Automation Modernization (ERAM) system at the Miami Air Route Traffic Control Center.

That center is responsible for controlling millions of cubic miles of airspace for commercial flights over Florida.

A spokesperson for Miami International Airport attributed delays there to a Florida-wide “FAA computer system issue.”

The FAA said earlier that Monday would be a busy post-Christmas travel day with 42,000 flights scheduled, “with possible heavier volume from south to north.”

Affected airports

Some of Florida’s key airports serving tourists are being affected by the air traffic computer problem, according to flight tracking site FlightAware. They include:

• Miami International Airport (MIA) with delays running up to one hour and 45 minutes and increasing as of 3 p.m. ET Monday.

• Fort Lauderdale-Hollywood International Airport (FLL) with delays running up to one hour and 30 minutes and increasing as of 3 p.m.

• Orlando International Airport (MCO) with delays running up to 45 minutes and increasing as of 3 p.m.

CNN’s Melissa Alonso and Forrest Brown contributed to this report.
Top image: American Airlines planes sit on the tarmac at Miami International Airport in a January 2022 file photo. (Daniel Slim/AFP via Getty Images)