For international travel in 2026, the gold standard is to arrive at the airport and check in at least 3 hours before your scheduled departure. While modern technology like biometric bag drops has expedited parts of the process, international hubs now face higher security scrutiny and unpredictable staffing levels. If you are checking luggage, remember that most airline counters close exactly 60 minutes before departure. If you are traveling with "Hand Baggage Only" and have already checked in via a mobile app, you might safely arrive 2 hours early, but this leaves zero margin for error regarding unexpected security queues or documentation checks (like visa verifications) that many airlines now require at the gate before you are permitted to board.