Your Approval Isn’t Enough: United Bars AI Agents From Flight Bookings

United Airlines said on November 11 that it is restricting **unauthorized third-party AI agents** from using its website, app and travel intermediaries to book, change or manage tickets. Its revised contract of carriage bars those actions **even when a passenger supervises or approves the agent**, a policy that puts limits on automated flight purchasing as airlines and technology companies explore AI-assisted travel.United’s announcement says it is restricting access both **directly on its digital platforms** and **indirectly through travel agencies and aggregators**. The airline said the effort includes updates to its booking, ticketing and distribution policies. The contract text, described by travel publications as revised November 11, adds AI agent use to its list of prohibited practices. The new provision covers software or services that take **autonomous or semi-autonomous action** to search for, book, purchase, ticket or manage products offered by or through United. According to text reproduced by View from the Wing, One Mile at a Time and PPC Land, the definition includes AI-enabled browsers, standalone agents, assistants embedded in consumer platforms and third-party tools accessing United through an intermediary. It applies to flights and other offerings such as seats, upgrades and partner products. United’s rule distinguishes searching from completing a transaction. The Wall Street Journal, as cited by View from the Wing, reported that AI assistants may still search for United flights and present fares, while customers must make the purchase themselves. The airline’s announcement does not name particular AI products, and the cited contract language is broad rather than tied to a specific provider.

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Passengers Must Complete the Purchase

The policy sets a boundary between **AI-assisted flight research** and **AI-led transactions** at a major U.S. airline. Passengers may use an assistant to find options, according to the Journal report, but an unauthorized agent cannot take the next steps to buy or service a ticket under the revised terms. That could affect tools designed to handle an entire trip workflow, from booking to seat selection and later changes. The terms also raise practical questions for travelers who give an assistant access to an account. United says agent actions could cause unintended purchases, account changes or use of MileagePlus miles. Its contract says it can cancel reservations made, modified or serviced by agents without notice. The remedies section includes invalidating tickets, charging the full ticket value, removing miles and ending MileagePlus membership, though the contract text does not say whether United plans to apply those penalties to agent bookings. The move is an early sign of how airlines may govern automated access to bookings and customer accounts. Skift described United as the first U.S. airline to state such a restriction explicitly. The policy may shape how travel agencies, aggregators and AI providers design booking services, but it does not establish how other airlines will respond.

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AI Travel Tools Meet Airline Rules

Personal AI agents are marketed as tools that can act on a user’s instructions, including finding and booking travel. Meta CEO Mark Zuckerberg called travel a “top use case” for its Muse agent, according to Skift. United’s action addresses the transaction itself: its contract defines prohibited agent activity to include booking, purchasing and later servicing a ticket, whether the passenger approves the steps or not. The cited reports place United’s policy among a wider set of differing approaches. Amazon and JPMorgan Chase have restricted outside agents, while Southwest and Expedia have been working with ChatGPT, according to the source material. Those examples concern separate companies and do not establish a common industry policy. The source also cites Uber’s report of four agent-booked rides in a week with about 320 million trips and orders; that is a raw count, not a measure of growth, and the comparison basis for agent bookings is not specified. United has cited aviation rules as one reason for its restrictions, giving check-in declarations about prohibited baggage contents as an example. The source material references federal regulation 49 CFR 175.25 but does not provide its full text or an independent legal analysis. The regulatory explanation should therefore be understood as United’s stated rationale, not as a finding that every AI agent transaction would violate federal rules.

““United is taking steps to restrict access – directly within our digital platforms and indirectly via travel agencies and aggregators – to prohibit use by unauthorized, third-party personal AI agents or assistants.””

— United Airlines

Enforcement Details Remain Open

United’s public announcement does not identify specific AI products or explain how the airline will detect agent activity across its own platforms and third-party travel services. The revised contract gives United the right to cancel agent-made, modified or serviced reservations without notice, and lists possible remedies, but the cited text does not establish which remedies the airline will use in practice. The source material says tickets issued before November 11 remain subject to the contract in force when they were issued, citing Rule 3.E as reported by PPC Land. That is the publication’s reading of the contract; United’s announcement does not separately explain how it will treat existing bookings or later changes to them. It is also unclear how the restrictions will be applied when an AI tool searches or prepares a booking but a person performs the final purchase.

Watch for Booking Policy Updates

United said the effort includes updates to its booking, ticketing and distribution policies, but it did not provide a timetable or describe additional technical steps. Travelers using AI tools should expect to complete United purchases themselves unless the airline authorizes the service. Further clarity may come through updated contract language, guidance from United on existing reservations, or changes to how travel agencies and aggregators handle AI-assisted bookings. No enforcement schedule or response from the named AI providers is included in the available source material.

Key Questions

Can an AI assistant still find United flights?

According to The Wall Street Journal, as cited by View from the Wing, an assistant may still search for flights and show fares. The passenger must make the purchase themselves.

Does passenger approval make an AI booking permitted?

No. The contract wording reported by travel publications says the restriction applies whether or not a passenger or another person supervises or approves the agent’s actions.

Which AI products does United’s policy name?

The cited contract text does not name specific products. It describes categories including AI-enabled browsers, standalone agents and assistants embedded in consumer platforms.

Can United cancel a ticket booked by an AI agent?

The reported contract text says United may cancel reservations made, modified or serviced by AI agents without notice. It lists additional possible remedies, but does not say which ones United intends to use.

When did the restriction take effect?

The revised contract is dated November 11, 2026. The source material says tickets are governed by the contract in effect on their issue date, but United has not separately explained how it will handle existing bookings.

Source: Thorsten Meyer AI