United Airlines - Travel Information: Delayed and Damaged Baggage
Limits of liability
United is not liable for damage to fragile items, spoilage of perishables, loss/damage/delay of money, jewelry, cameras, electronic/video/photographic equipment, computer equipment, heirlooms, antiques, artwork, silverware, precious metals, negotiable papers/securities, commercial effects, valuable papers, or other irreplaceable items and/or any item where a liability release was signed by the passenger.
Domestic
For travel wholly between U.S. points, liability for delay, damage or loss to checked baggage, including carry-on baggage if tendered to the carrier's in-flight personnel for storage or otherwise delivered into the custody of the carrier, is limited to a maximum of $3,300 per passenger.