Does United Require 24-Hour Check-In? What You Need to Know

United Airlines does not require passengers to check in exactly 24 hours before their flight, but it offers online check-in 24 hours before scheduled departure for most domestic and international flights. While United does not have a strict “24-hour check-in requirement,” completing online check-in within the 24-hour window is highly recommended. By checking in early, passengers can secure seat assignments, pay for checked baggage, and receive a digital boarding pass via the United mobile app or website. Checking in early helps avoid last-minute airport rushes and gives travelers peace of mind regarding their flight details. United Airlines recommends checking in at least 1 hour before departure for domestic flights and 2 hours for international flights to ensure enough time for security and boarding. If you’re traveling internationally, United suggests arriving at the airport at least 3 hours before departure to account for additional procedures like passport control and visa checks. For passengers with special needs, or those traveling with infants, pets, or unaccompanied minors, arriving earlier is advisable to address any specific requirements or assistance needed. The 24-hour online check-in window also applies to both Basic Economy and Standard Economy tickets, although Basic Economy passengers may not have the same seat selection flexibility as other fare types. However, travelers who check in exactly at the 24-hour mark often benefit from better boarding positions, especially when flying on a full flight. Frequent flyers and MileagePlus members with Premier status often receive priority boarding, which is available regardless of check-in time. United also allows self-service check-in kiosks at most airports, which are available 24 hours before the flight for those who prefer an in-person option. These kiosks allow passengers to check in, print boarding passes, and check bags without standing in line at the counter. Airport check-in counters open 2-3 hours before flight departure, depending on the destination, and passengers are encouraged to check in well before the recommended closing time. For domestic flights, United’s check-in process typically closes 30-45 minutes before departure, and for international flights, it’s recommended to check in at least 60 minutes before departure. In summary, while United Airlines does not mandate checking in exactly 24 hours before your flight, it offers online check-in 24 hours in advance, which is a convenient way to streamline your travel experience. Checking in early provides numerous benefits, including the chance to select better seats and avoid delays. United’s check-in process is flexible, but completing it within the 24-hour window gives travelers a smoother journey, from airport arrival to boarding.