The General Guideline for How Early You Should Get to the Airport. Generally speaking, most airlines advise that you arrive at the airport at least 2 hours prior to a domestic flight, and at least 3 hours prior to an international flight.

In 2026, the "2-hour rule" is increasingly considered the absolute minimum and is often risky for international travel. For domestic flights within the US or UK, arriving 2 hours early is generally sufficient, allowing time for check-in and security. However, for international flights, airlines and airports now strongly recommend arriving 3 hours prior to departure. This is due to the 2026 implementation of more rigorous biometric checks (like the EES in Europe), potential ETIAS verification, and the fact that many long-haul flights now begin boarding 45 to 60 minutes before take-off. If you are traveling during peak holiday periods or from a major hub like London Heathrow, Atlanta Hartsfield-Jackson, or Dubai, 2 hours can quickly disappear if there is a queue at the bag drop or a "random" security screening. Arriving 3 hours early provides a safety buffer for the unexpected "digital glitches" that occasionally plague modern 2026 travel systems.