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United Airlines will restrict AI agents from booking flights and managing reservations for customers, citing cybersecurity risks, TechCrunch reported on November 12, 2026. The airline said sharing account credentials with third-party AI assistants can expose sensitive information and lead to unintended purchases, account changes or use of MileagePlus miles. It also warned that such tools could violate federal aviation rules, such as the requirement that a human complete flight check-ins to confirm bags contain no banned substances. United said it will restrict access directly through its digital platforms and indirectly through travel agencies and aggregators, and will update its booking, ticketing and distribution policies. TechCrunch reported that the move follows a warning from banks, including Bank of America, which the previous week urged customers not to share passwords with AI assistants. TechCrunch described United as the latest large American company to block customers' AI agents from its systems, as airlines and banks struggle to tell real customers from AI systems acting for them.