United Airlines Blocks AI Agents From Booking Your Flights

United Airlines said it is blocking personal AI agents from booking flights or signing in to customer accounts, ahead of the holiday travel season.

If you were planning to hand your next trip to an AI travel agent such as Meta's Muse or ChatGPT Dots, the purchase now has to be yours when the airline is United.

What United's AI agent block covers

The block covers United's website and app. It also covers agents that book through travel agencies and booking sites, where United says it is restricting access "indirectly."

You can still book United fares on those sites yourself. Fares stay on Kayak, Hopper and Google Flights, according to travel analyst Henry Harteveldt, who told CBS News that "consumers shouldn't find it any more difficult to find good fares on the airline."

United is also changing its booking and ticketing policies to match. It's updating its Digital Trust Center to explain the restrictions, and United says the page will show where to get help if an agent takes an action you didn't intend.

United's two reasons: your login and FAA rules

The first reason is your account. United says that "sharing account credentials with personal, third-party, AI assistants can expose sensitive information, and actions taken by these tools may result in unintended purchases, account changes, or use of MileagePlus miles."

An agent that books for you needs your sign-in and your payment details, and once it has them it can spend miles or change a booking you didn't mean to touch.

The second reason is federal rules. United says an agent checking a passenger in could break FAA and Department of Transportation rules, because check-in requires the passenger to confirm their bags don't contain banned items such as explosives.

What United's new website terms actually say

United updated its website terms on November 11 with a new "Automated Agents" section. It defines an automated agent broadly:

any software, service or feature, including an AI assistant or agent, a bot or scraper, a browser extension, or a feature built into a browser or app, that takes autonomous or semi-autonomous action, whether or not a person supervises or approves its actions, to search, book, purchase or manage anything on this website or United's mobile app…

So an agent you're watching and approving step by step still counts. Searching counts too, so without United's written permission an agent can't even look up fares on united.com, though it can still show you United fares from other sites.

Any agent needs United's written permission in advance, and United says it may block or limit any agent at any time. The terms also bar anyone from using United's fares, schedules or prices to train or build an AI system.

The terms leave a few things alone. They don't restrict:

• assistive technology used by people with disabilities
• a normal web browser run by a person (the browser's built-in agent features still count as an agent)
• tools that only turn your own typed or spoken words into a search that you run and check yourself
• search engines indexing united.com's public pages

United's contract of carriage, the rules that come with every ticket, changed the same day. Its list of prohibited ticketing practices now includes "the use of AI Agents to make, modify or service a Ticket, and/or to purchase any service or product."

The contract also says what can happen to that ticket. When a ticket is booked in breach of those rules, the contract lets United invalidate it, cancel the rest of the trip, and even delete MileagePlus miles.

One more line puts the risk on you. If you send an agent onto United's site anyway, the terms treat that as you, and the company that runs the agent, agreeing to them, and United keeps its rights even if it processes the booking.

Amazon did the same to Muse in September

United isn't the first big company to shut agents out. In September, Amazon blocked Meta's Muse from shopping on Amazon.com, saying Meta never told it Muse would shop there and that the agent took customers' logins without identifying itself.

American Airlines' rules already forbid unauthorized AI tools without its written permission, according to Bloomberg. United is the first US airline to announce a block outright.

Not every airline is going this way. Southwest has made its flights searchable inside ChatGPT, so ChatGPT users can look up Southwest fares there.

Harteveldt sees a business reason behind United's move as well. "United is saying they don't want to add yet another, and potentially even more powerful, intermediary," he told CBS News, adding that flight searches cost airlines money and United wants to avoid a surge of bot searches.

How United says it will spot an agent

United told reporters its system can tell whether a booking came from a traveler, a travel agency or an AI assistant. It hasn't said how it does that.

That's the hard part when an agent works inside the customer's own browser, as many personal agents do, because to the website that traffic looks like you, signed in from your computer. Amazon hasn't said how it handles that case either.

Payment companies are working on the other side of the problem. Amex built a check that confirms an agent's purchase matches what you approved before the charge goes through, which goes after the same "unintended purchases" United is worried about.

How to book United flights with AI help now

For United trips, let AI do the research and keep the purchase for yourself:

1. Ask ChatGPT, Claude or Gemini to compare dates, routes and prices, or use Google Flights, which still lists United fares.
2. When you've picked a flight, book it yourself on united.com or in the United app.
3. Keep your MileagePlus login out of any agent, since that's the access United says it will block. (1Password's approach lets agents sign in without seeing passwords.)

Sources

• CBS News: United Airlines bans AI agents from booking flights
• United: website terms of use, Automated Agents section
• United: contract of carriage, revised November 11, 2026
• The Independent: United Airlines bans AI flight bookings
• Skift: United moves to block personal AI agents from booking flights
• Bloomberg: United blocks AI agents from booking flights ahead of holidays
• Adweek: Amazon locks out Meta's Muse