For departures from John F. Kennedy International Airport (JFK) in February 2026, you should arrive 3 hours before a domestic flight and 4 hours before an international flight. This recommendation is higher than the historical "2-hour rule" due to massive, ongoing multi-billion-dollar redevelopment construction at Terminal 1 and Terminal 4, which has significantly impacted road traffic and AirTrain lead times. Furthermore, JFK’s security wait times can fluctuate wildly; while "TSA PreCheck" and "CLEAR" help, the sheer volume of 2026 international travel means bag-drop lines are often longer than the security lines themselves. If you are flying out of the newer Terminal 8 (American/BA), you might get away with 2.5 hours, but for the chaotic Terminal 4 or the construction-heavy Terminal 1, the 4-hour window is a necessary buffer to ensure you don't miss your flight due to "Van Wyck Expressway" traffic or terminal congestion.