United Airlines announced it will limit access for third‑party personal artificial intelligence (AI) agents and assistants attempting to book flights or manage reservations on behalf of users. The carrier cited cybersecurity risks and the potential to undermine federal aviation regulations as the reasons for the policy change.
Background to the decision
The move follows a broader trend among large U.S. companies trying to define how customers may use AI assistants to interact with corporate systems. United highlighted that sharing account credentials — such as usernames and passwords — with personal, third‑party AI assistants can create security vulnerabilities: leaked or exposed credentials can allow unauthorized access to sensitive information.
United warned that “sharing account credentials with personal, third‑party, AI assistants can expose sensitive information, and actions taken by these tools may result in unintended purchases, account changes, or use of MileagePlus miles.”
Regulatory concerns
The airline also pointed to regulatory issues, noting that certain actions must be completed by a human. United cited flight check‑in as an example, where a passenger must acknowledge that their bags do not contain prohibited items — a responsibility the carrier said cannot be delegated to an automated AI tool.
What United will do
In its statement, United said it is taking steps to restrict access both directly within its digital platforms and indirectly through travel agencies and aggregators to prohibit use by “unauthorized, third‑party personal AI agents or assistants.” The work will include updates to the airline’s booking, ticketing and distribution policies.
Industry context
United’s announcement comes after warnings from financial institutions about sharing credentials with AI assistants. Banks including Bank of America urged customers last week not to share their passwords with AI tools, citing similar security concerns.
Why this matters
The policy highlights a broader challenge posed by the spread of personal AI assistants: balancing user convenience against data security and regulatory compliance. Restrictions by airlines and banks are likely to affect how consumers integrate personal AI agents into everyday tasks like booking travel and managing accounts.



