Japan Airlines allows passengers to check in early using both online and airport methods. Online check-in opens 24 hours before departure for most Japan Airlines flights. It closes 60 minutes before international flights and 20 minutes before domestic flights. You can complete online check-in via the Japan Airlines website or mobile app using your booking reference and last name. Once checked in, you can download or print your boarding pass. This lets you skip airport check-in lines if you have no checked baggage. For checked baggage, proceed to the bag drop counter at the airport, which usually opens 2 to 3 hours before departure. For international flights, airport check-in counters typically open 3 hours before departure and close 60 minutes before takeoff. Japan Airlines recommends arriving at least 3 hours early for international routes. This allows time for immigration, security, and document checks. For domestic flights within Japan, check-in counters usually open 90 minutes before departure and close 20 minutes before takeoff. Arrive at least 60 to 90 minutes early for domestic flights, especially if you’re checking baggage. JAL also provides self-service check-in kiosks at major airports, including Tokyo Haneda, Narita, Osaka Itami, and Kansai, where passengers can check in, print boarding passes, and luggage tags. These are helpful if online check-in isn’t available or if you prefer in-person processing. Passengers in First Class, Business Class, or with JMB elite status can access priority check-in counters. These help reduce waiting times. Passengers needing special assistance, traveling with infants, pets, or part of group bookings, must check in at the airport and should arrive early. If flying a code-share flight operated by another airline, check-in policies may differ. Always confirm with the operating carrier. Japan Airlines also sends check-in reminders by email or app notifications. It’s best to check in as soon as the 24-hour online window opens to secure seat preferences and avoid airport delays. If you miss online check-in, ensure you arrive early enough to complete check-in and baggage drop at the airport before deadlines. Early check-in helps avoid last-minute issues and ensures smoother processing. Always have your passport, visa, or required travel documents ready. Delays in verification or unexpected security lines can cause boarding problems if you arrive late. In summary, Japan Airlines check-in opens 24 hours before flight time online, with airport counters usually opening 2 to 3 hours before departure. Check-in deadlines are 60 minutes before international flights and 20 minutes before domestic flights. Arriving early ensures enough time for all procedures. Whether you check in online or at the airport, completing the process early is the best way to avoid issues and travel with peace of mind on Japan Airlines flights.