United Airlines has quietly rewritten its contract of carriage to prohibit AI assistants from booking, changing or servicing flights on your behalf - even if you personally supervise and approve every step. The change, dated November 11, adds a new rule (6.J.6) banning AI agents from making, modifying or servicing tickets, and another (Rule 5.H) giving United the right to cancel any reservation it believes an agent handled.
The stated reasons are familiar: privacy, the risk of unintended purchases, and regulatory requirements such as hazardous-materials notices that passengers must acknowledge. But CEO Scott Kirby was more candid at an event in Chicago, admitting: he simply doesn't want to create "another middleman" between United and its customers.
The ban reaches well beyond United's own website. It covers agents working through travel agencies and intermediaries too. What's still allowed, according to the Wall Street Journal: AI tools researching flights and presenting options and prices, with you then completing the purchase yourself. So your chatbot can find the fare - it just can't click buy.
Enforcement is the awkward part. If an AI agent completes a purchase on Expedia, which already has a ChatGPT integration, United sees an Expedia booking, not the software behind it. A contractual ban isn't a technical block, and pushing hundreds of intermediaries to police their customers' tools is a tall order. American Airlines tried something similar with agency distribution a few years ago and eventually backed down.
Why is United doing this now? The analysis floating around the story points to bargaining power: whoever controls which flights an assistant shows you could one day charge airlines for placement, exactly like online travel agencies do today. There's also accountability - when Delta's own AI once cancelled a return flight it was meant to preserve, a human team had to fix it. And agent bookings are still rare, making this a cheap moment to draw a line. The counterargument: the customers most likely to use AI assistants are also the ones most likely to choose an airline for perks like United's Starlink wifi, and an assistant that genuinely works for you can compare total prices and decline overpriced add-ons - something airlines may not love.
For travellers, the practical takeaway is simple. If you delegate booking to an AI agent and it buys a United fare, that ticket could theoretically be cancelled under the new rules. Researching with AI and booking manually stays safe. This fight is really the opening round in a much bigger negotiation over who - the airline, the agent, or you - controls how flights get bought in the next few years.
