United now bars AI agents from booking its tickets: what you can still use AI for
United Airlines announced on November 11 that third-party AI agents and assistants may no longer book, change or service its tickets, whether on united.com or through travel sites. The rule applies even if you watch and approve every step. You can still compare fares with AI on aggregator sites, but the purchase has to be yours.
What happened
United Airlines announced on November 11, 2026 that it is restricting access for unauthorized third-party AI agents and assistants. The block covers United's own website and app, and also travel agencies and aggregators that sell its fares.
The contract of carriage now lists among prohibited practices "the use of AI Agents to make, modify or service a Ticket", or to buy any service or product, as quoted by One Mile at a Time. Its definition takes in AI assistants and AI-enabled browsers, and it applies whether or not a person supervises or approves what the agent does.
Why United says it did this
The release gives three reasons. Handing your login to an AI assistant "can expose sensitive information", and an agent acting for you can make unintended purchases, change your account or spend MileagePlus miles. United adds that automated actions could break FAA and DOT rules. It names no AI product and lists no penalty.
Who it affects
Anyone who lets an agent buy, change or add extras to a United ticket, including seats and upgrades. You can still find and buy United fares yourself on Kayak, Hopper and Google Flights, CBS News reports; what's barred is an AI agent doing the buying for you. United says it will explain the restrictions, and where to get help after an agent takes an action you didn't intend, on its Digital Trust Center.
What to do
- Research with AI, book yourself. Let the assistant compare flights and fees, then complete the purchase on united.com or the app.
- Keep your MileagePlus login out of chats and agents. If you've already given it to one, change the password.
Agents doing things nobody asked for isn't hypothetical: see the fake police tip Anthropic's own agents sent.
Try it
Act as a flight research assistant. Don't log in, book or pay for anything. Trip: [from, to, dates, how flexible the dates are] Travelers and bags: [number of adults, children, checked and carry-on bags] Must-haves: [for example nonstop only, layover under 3 hours, aisle seat] 1. Search the web and list up to five options in a table: airline, flight numbers, times, stops, fare type, and total price including bags and seat fees. 2. Flag any fare that bans changes or charges for a carry-on. 3. For my top pick, give me the steps to book it myself on the airline's own site. If you can't search the web, say so and tell me what to check instead.
Sources
- United Airlines, United Restricts Access for Third-Party AI Agents, November 11, 2026
- One Mile at a Time, contract of carriage wording, November 2026
- CBS News, United Airlines bans AI agents from booking flights, November 11, 2026