Handing your holiday booking to an AI assistant sounds convenient — until the airline says no. United Airlines is tightening its policies to block unauthorised third-party AI tools from accessing its systems, and the rules reach beyond its own website to travel agencies and fare aggregators too.
The airline's concern isn't Luddite paranoia. When you give an AI assistant your login, it can make purchases, change reservations or even spend your MileagePlus miles on your behalf. Sharing those credentials also exposes sensitive account information. And some automated actions, United argues, could breach FAA and US Department of Transportation rules — for example, check-in requires a human to declare that bags contain no prohibited items such as explosives. That's not something software can legally accept responsibility for on your behalf.
What makes this move notable is its scope. Blocking assistants on united.com would only close one door, since the same tools could reach the airline through travel agencies or booking services. United is updating its booking, ticketing and distribution policies so the restrictions apply across those indirect channels as well — which means travel advisors now need to check whether any AI product they use is actually authorised to connect to United, not just whether it can technically make a reservation.
For travellers, the practical takeaway is simple: think twice before pasting your United credentials into a booking bot. The airline is nudging customers towards its own app for booking and managing trips, and says it will publish guidance in its Digital Trust Center for anyone whose AI assistant does something unintended, like an accidental purchase or account change.
It's worth watching where this goes. If other carriers follow United's lead, AI booking tools that promise to organise your entire trip could hit a patchwork of airline-specific rules — each with its own view on what an assistant is allowed to do. The deeper tension is that a lot of travel booking is legally built around a person making a decision and accepting responsibility, and software now has the capability to skip that step. Airlines will have to decide how much delegation they permit, and regulators may eventually need to spell out which obligations a passenger can genuinely hand off.
In the meantime, if you're planning a United trip, treat AI recommendations as a research tool rather than an agent with the keys to your account. Let it compare fares and suggest itineraries — then book yourself, and keep the safety declarations and payment confirmations in your own name.
