Direct your preferred web browser to united.com and click on the "Customer service" link in the upper right corner of the window.
Click on the "Email us" tab on the page that opens, then select "Baggage Services" from the drop-down menu just below the "Email us" tab.
Fill out the required and requested information on the form that appears. This includes your email address, street address, name, Mileage Plus number, if applicable, the date or dates you traveled, your origin and destination cities and the type of claim you wish to make.
Type a short message in the "Message" box describing your lost item and providing any other relevant information not already entered in the form. Click "Continue" to submit your message.
Dial 800-221-6903 on your phone to reach United's baggage information service department by phone.
Say "Lost and Found" when prompted.
Say the name of the airport that most likely has your bag or lost item. This will prompt the recording to give you the number of the lost and found department at that airport.
Write a letter containing all relevant information about your missing bag or lost item, including your email address, street address, name, Mileage Plus number, if applicable, the date or dates you traveled, your origin and destination cities and the type of claim you wish to make.
Put your letter in an envelope made out to the following address:
Baggage Services
HDQLZ
P.O. Box 66140
Chicago, IL 60666
Apply the necessary postage to this envelope and send it.
