United Bars AI Agents From Booking Flights, Even With Oversight

United Airlines said Wednesday it is cutting off access for unauthorized third-party AI agents, becoming the first U.S. carrier to spell out such a restriction in writing, according to Skift. The airline's updated contract of carriage, revised on November 11, 2026, adds a new rule — 6.J.6 — that prohibits AI agents from making, modifying or servicing a ticket, or purchasing any related product or service, even when a customer is watching and approves each step, according to View from the Wing.

United said in a statement that it is restricting access "directly within our digital platforms and indirectly via travel agencies and aggregators" to keep out unauthorized personal AI agents and assistants. The airline pointed to regulatory compliance and consumer protection as its rationale, warning that handing login credentials to a third-party bot can expose sensitive account information and create risk around unintended purchases. A companion rule, 5.H, gives United the right to cancel any reservation that was made, changed or serviced by one of these agents.

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Kirby says he doesn't want "another middleman"

CEO Scott Kirby offered a blunter explanation at an event in Chicago, according to View from the Wing. "To be honest, I don't want to create another middleman," Kirby said. That comment points to a business concern distinct from the privacy language in the airline's official policy: an AI assistant that controls which flights a customer sees could eventually charge referral fees, sell preferred placement, or steer bookings toward airlines willing to pay for favorable treatment — the same dynamic that has long made United wary of traditional online travel agencies.

Whether United can actually enforce the ban is another question. The contract language covers agents that reach United through a travel agency or other intermediary, but the airline's booking systems would still see a standard agency transaction rather than evidence that an AI tool executed it. Expedia, for example, already has a ChatGPT integration that surfaces flight and hotel options with live prices, but current instructions route the customer back to Expedia's own site to finish the purchase. If an AI agent completes that final step on Expedia's platform, United would reportedly see only an Expedia booking, with no visibility into how it was made.

Research still allowed, purchases are not

The restriction has a carve-out. The Wall Street Journal has reported that AI tools can still surface United flights and fares for comparison; it's only the completed purchase by an autonomous agent that breaks the new rule. A customer who uses an AI assistant to research options and then books the ticket personally is not in violation.

The policy raises a liability question airlines haven't had to answer before: who absorbs the cost when a bot gets it wrong. An AI agent could buy the wrong travel dates, misread a fare restriction, or cancel a ticket a customer meant to keep — mistakes an airline has little interest in sorting out after the fact. United has previously clashed with online travel agencies over distribution terms, including cutting off access altogether, and the new contract language suggests a similar standoff could be coming with AI platforms if they push back on the restriction.