United Airlines allows its patrons to check in either on location or online at united.com. Those who choose the web option have the option to check in up to 24 hours before their flights depart. Holidays and certain international travel destinations may require a longer check-in period.Continue Reading
Individuals are eligible to check in online if their first flight is United, if there are only four or less segments on the trip and if there are fewer than nine individuals within the group. Individuals are ineligible if they have a paper ticket or require special services.
For many of its flights within the United States, as well as some international destinations, United Airlines will not accept baggage more than four hours before a scheduled flight. For those customers who fail to meet the company's check-in time restraints, United Airlines reserves the right to refuse checked baggage, to cancel the reservations and to prohibit the customers from boarding.
The airline provides detailed information about check-in time limits on its website. Travelers should note that they need to allow more time for check-in for international travels than they do for flights within the United States. Many flights have an established time limit for check-in and baggage drop off.Learn more about Geography