United Airlines announced on November 11, 2026 that unauthorized third-party AI agents are barred from booking, changing, servicing or purchasing travel through its website, app and indirect channels such as travel agencies and aggregators. Why it matters: your AI assistant can still research a United trip, but it can no longer complete the transaction for you — and United is the clearest sign yet that big consumer companies, not just AI labs, will decide where agents are allowed to act.
November 11, 2026
What United changed
United backed the restriction with policy, not just a press statement. Its Contract of Carriage, revised November 11, defines an AI agent as software or a service that takes autonomous or semi-autonomous action — even when a person supervises or approves what it does. The definition covers assistants built into social media, messaging and search platforms, AI-enabled browsers, standalone agents, and third-party assistants that reach United through agencies or other intermediaries. United’s updated website terms require prior written permission for automated-agent access to united.com or its mobile app, and let the airline block or limit agents that do not have it. The terms also bar using United’s fares, schedules and pricing data to train or develop AI models.
Why the airline says it is doing this
United’s stated reasons are security and safety. Sharing account credentials with a personal AI assistant can expose sensitive information, and an agent’s actions could lead to “unintended purchases, account changes or use of MileagePlus miles,” the airline says. It also points to aviation rules: flight check-in requires a human to acknowledge that their bags do not contain banned substances such as explosives, and automated actions could conflict with Federal Aviation Administration and U.S. Department of Transportation requirements or cause travelers to miss safety content. There is a business reason in the background too. The Wall Street Journal reported that CEO Scott Kirby, speaking at an event on Tuesday, put it plainly: “To be honest, I don’t want to create another middleman.”
What travelers can still do
AI-assisted research and planning remain allowed, as long as the tool uses general information and does not access united.com or the United app. United advises customers not to hand credentials, confirmation numbers or MileagePlus details to an AI assistant. Bookings that third-party agents made before November 11 will not be canceled, though United recommends reviewing them — and its contract lists agent-made bookings among those it may cancel going forward. Disability assistive technology, ordinary browsers operated by a person, and search indexing are exempt. United says it does not currently work with any third-party AI agents, and that it wants standardized, secure integrations — with privacy, security, authorization and accountability built in — before agents interact directly with accounts or bookings.
Why it matters
United is joining a split that is forming across consumer industries. Reuters notes that Amazon has blocked Meta’s Muse agent while Walmart has partnered with it, and that Expedia and Booking are working with OpenAI; Engadget points out that Southwest has taken the opposite approach, building a plugin so users can book flights with ChatGPT. The pattern is consistent: companies are glad to let agents in through a door they control, and are closing the door on agents that arrive with a customer’s password. For travelers, the practical takeaway is simple — plan with AI all you like, but expect to click “buy” yourself on United, and do not give an assistant your MileagePlus login.
Frequently asked questions
Can my AI assistant still help me plan a United trip?
Yes. Research and planning using general information are still permitted. The ban covers agents accessing united.com or the app and making, modifying, servicing or purchasing bookings.
Will United cancel a flight an AI agent already booked for me?
Bookings made by third-party agents before November 11, 2026 will not be canceled, according to United’s guidance, though the airline recommends reviewing them for accuracy.
Does United work with any AI agents today?
No. United says it does not currently work with any third-party AI agents, and it wants standardized, secure integrations in place before allowing them.
Sources: Reuters, Engadget, Unite.AI, PhocusWire