Reasons for flight delays at LaGuardia Airport include adverse weather conditions, high aircraft traffic volume, security alerts, late-arriving aircraft and airline delays. The U.S. Department of Transportation classifies delays into five causes: Air Carrier, Extreme Weather, National Aviation System, Late-Arriving Aircraft and Security.
The most common reason for flight delays is a previous flight using the same aircraft arriving late to the airport, causing the current flight to be delayed. Air carrier delays are also common and cover a wide range of causes related to the airline. These include delays from cleaning the aircraft, unloading and loading baggage, maintenance or crew issues, and fueling issues.
National Aviation System delays also cover a wide range of causes. Two common reasons are non-extreme weather conditions and a high volume of aircraft arriving and departing from the airport. Delays due to non-extreme weather conditions, such as fog or ice, cause far more delays than extreme weather conditions, such as hurricanes or blizzards. Security delays, which include evacuations from the aircraft or terminal, reboarding passengers and long wait times in security lines, are very rare.
Specific flight delay information for LaGuardia Airport, or LGA, is reported daily and can be viewed on the airport's website.