ONT Arrivals & Departures
Live flight status, arrivals, departures and airport information for Ontario International Airport in Ontario, United States.
Ontario International Airport (ONT) is a major international airport serving Ontario, United States. The airport connects the region to destinations across the globe on a busy schedule of daily arrivals and departures. Track every ONT flight in real time with live arrivals and departures, current delay status, aircraft altitude, groundspeed, and flight information sourced from global ADS-B receiver networks and refreshed every 60 seconds. Bookmark this page for instant access to ONT live arrivals, departures, and delay information whenever you need it.
Current FAA Status
FAA Delay History
Delay history will appear here as new FAA status changes are detected for this airport.
About Ontario Airport Delays
Ontario International Airport (ONT) delay status is monitored in real time using FAA National Airspace System (NAS) data. FAA delay advisories at ONT include Ground Delay Programs (GDPs), Ground Stops (GS), Arrival and Departure Delay Advisories, and Airport Closures. These are system-wide restrictions issued by the FAA and affect all airlines and flights operating at the airport. Data refreshes automatically every 5 minutes.
FAA Abbreviation Reference
Ontario (ONT) Airport Delays — FAQ
What does an active FAA delay mean at ONT?
An active FAA delay at ONT means the FAA has issued an advisory — such as a Ground Stop, Ground Delay Program, or Arrival/Departure Delay — affecting flights operating at Ontario International Airport. It is a system-wide restriction, not specific to one airline.
What is a Ground Delay Program at ONT?
A Ground Delay Program at ONT means inbound flights are being held at their departure airports and given controlled release times. This absorbs delay on the ground rather than in the air, saving fuel and improving safety. GDPs typically last several hours.
What is a Ground Stop at ONT?
A Ground Stop at ONT temporarily halts all departures heading to Ontario. Flights already en route are generally allowed to continue. Ground Stops are usually shorter in duration than Ground Delay Programs and are issued when conditions change rapidly.
How often is ONT FAA delay data updated?
FAA delay status for ONT on FlightStatus.flights refreshes every 5 minutes from official FAA NAS data. The Delay History section above shows all status changes detected in the past 24 hours.
Are FAA airport delays the same as individual flight delays at ONT?
No. FAA airport delays are system-wide advisories issued by the FAA affecting all flights at ONT. Individual flight delays may also be caused by airline-specific issues such as late-arriving aircraft, crew availability, or mechanical problems. Both can occur simultaneously.