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United Airlines bans AI agents from booking flights on behalf of travelers

579 points • by herpderperator • yesterday at 9:24 PM • 604 comments • view on HN

Comments

doctoboggan • yesterday at 10:18 PM

How do they plan on stopping me from using Claude code with the Claude in chrome plugin, or some other computer use agent?

At this point it feels like I have an adversarial relationship with many merchants I use online. I wish the simple “you have a product, I have money” relationship was possible. I don’t want to take part in your giant human behavior optimization problem. You have a product and I have money why does it have to be more complicated than that?

Realistically though I know that’s not happening. I will continue to access online merchants in the way I prefer and will do my best to avoid detection or blocking. At least so far Claude is happy to play along but I suspect I will need to seek out an obliterated agent in the not to distant future. (Once the corporate capture of the frontier cloud AI models is complete.)

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cmpolis • yesterday at 10:32 PM

Tangent: it was always odd to me that "booking a [flight|hotel|concert tickets]" is the canonical example of a task that can be automated by an agent. These are tasks that are:

- already streamlined (spend 2min on Google flights, seatgeek, etc...); we aren't stuck with early web UX and latency

- I want to have 100% control of the outcome or would have to write a long list of preferences and rules (middle seats, layovers, etc...) to feel good about trusting automation

- require making a large payment. the agent is not getting free reign to use my cc

- give me some personal satisfaction and enjoyment - its delightful to look foward to a trip, concert, etc... and planning is part of the fun and anticipation imo

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andix • yesterday at 10:13 PM

Somebody once said, that airline booking pages itself are one of the most sophisticated CAPTCHAs. No idea if this is true, but they obviously don't want their customers to easily find the best deals.

I guess the best option is, to use a good reseller/travel agency that provides an API/MCP for booking and managing flights.

For finding the cheapest deals agents can still be used. Just the booking itself is probably better done manually. It also eliminates the risk that the agent does something stupid.

edit: they might try to block agents, but this won't be possible with browser use. they can always throttle users by IP or fingerprint. Letting an agent book a flight might be risky, because they might cancel a booking or impose a fee if they somehow detect it.

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ProblemExplorer • yesterday at 10:01 PM

The airlines are trying to reduce prices for everyone without giving specific people (atleast those who they don't deem "worthy") an edge. Here's a great, short comment: https://news.ycombinator.com/item?id=50459444

It's mostly a commodity, specially for economy class where price matters.

After gas and grocery, its the most vicious, cut throat business where a customer will switch from United to Delta over $5. Unlike gas and grocery they cannot compete on volume (even a 747 has a fixed capacity per leg).

It sounds counterproductive but personal AI agents cause a local optima while overall increasing cost for rest of the travelers.

For example, if you had an MCP connector to United and found a flight from SFO to DEN for $50, the rest of the seats have to go up in price to compensate and not just by a few cents because the nominal cost of an economy seat is likely $250, not $50.

Now United isn't against offering a $50 flight to customers who they deem "worth it" - they just don't want it to be anyone who can run an MCP connector. They are just betting that the "worth it" will "make it up" in the long run vs. a customer who's just there for the $50 seat.

What happens if you say "screw it, I'll code my own custom MCP connector to United.com!"

Well, eventually they will try and block you and then those $50 flights will just be gone from the website.

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cakeface • today at 1:13 AM

I have found these agentic blocks sort of inspiring and in the spirit of a free market. Amazon blocked my Muse, so I told Muse to find other vendors and prefer the shopify store for the brand. That was a pain for me to search through but AI has no problem.

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throw03172019 • yesterday at 10:31 PM

I recently bought a Flight directly on United.com. I usually book business travel directly on Brex so I was appalled of how bad the checkout flow was on the United site. 5 page loads. Multiple “offers” to sift through. Donations to the environment. Upgrades for security priority, seats, classes. Credit card ads.

It made me think, an agent would be nice. Too bad.

pavel_lishin • yesterday at 9:47 PM

> "United is saying they don't want to add yet another, and potentially even more powerful, intermediary than they already face in terms of Google search, price-comparison metasearch sites and online travel agencies," he told CBS News. "Flight searches cost airlines money, and undoubtedly United wants to avoid the expense associated with the surge of AI bot flight searches."

How much can it cost? And if it's so expensive, wouldn't intermediaries who cache results actually be cheaper?

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pixl97 • yesterday at 11:02 PM

Anyone here sticking up for the airlines just because you hate AI, ya'll are out of your minds.

The airlines use every nasty practice they can to raise costs to you. Hidden fees, raising costs by just viewing flights and all kinds of other crap.

Let them burn.

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aucisson_masque • yesterday at 10:16 PM

> The carrier also said that using an AI agent to, for example, check in for a flight could violate federal regulations, including rules requiring travelers to verify in person that their luggage does not contain banned substances.

That’s ridiculous.

They just want to keep their price list miserable to compare so they can overcharge people.

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solyin • yesterday at 9:46 PM

Their suit against Skiplagged should tell you everything you need to know about their attitude.

ctoth • yesterday at 10:39 PM

I use a screen reader to access the web. In future, I can easily imagine an agentic screen reader as being incredibly useful.

I do not look forward to when rules like this run up against a11y concerns. The AI equivalent of the Domino's case will certainly be interesting!

flossly • yesterday at 10:37 PM

These companies need to be bound by some sort of equal treatment.

If they can forbid us to use AI to interact with them, their customers should be able to opt out of being handled by their AIs as well.

Tit-for-tat.

schappim • today at 12:09 AM

I understand why they might be tempted to do this customer hostile action. For our own business, ChatGPT’s sales have grown to be 6.3%[1] of total, but our basket size is smaller compared to other channels.

I think this is because people are purchasing only what they need as recommended by their AI and nothing extra. This is a better outcome for the customer.

OpenAI is really eating Google's lunch hard[2]!

1. http://files.schappi.com/pb-JjWzp83d2O.png

2. http://files.schappi.com/pb-2BtxkLaITY.png

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bz_bz_bz • yesterday at 10:40 PM

If prices drop on United, you can rebook and pocket the extra money as travel credit (as long as you don't book BE). This is typically considered an underpriced option as most travelers don't regularly check prices after they've booked. AI agents threaten to reduce this "laziness tax", and it is something that other industries are worried about too. There's lots of speculation that mortgage rates will have to increase if people use AI agents to start optimally refinancing their mortgages. Seems like United will have to change this policy, fight the bots, and/or raise prices to compensate.

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teliskr • yesterday at 10:41 PM

How many people really want an AI agent to book their flights? I like AI and travel a lot, but I don't see that as being an ideal agentic tasks. In most cases, I prefer using google flights or expedia and looking at the options in a UI that is tailored to the task. Of course AI can be useful if you want to inquire about certain details or find more information.

It's funny how many AI tool demos have used flight booking as an example task. I always groan at that. I just don't think that will be the way most people book flights. Maybe the 1%ers or less. Are you you currently doing this?

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azinman2 • today at 2:21 AM

They don’t want people to comparison shop easily without getting a cut. Further, all these guys want to move to Uber-style dynamic/personalized pricing. So basically they want an adversarial relationship against you, but block any attempts to reverse that relationship on them.

throwaway13337 • today at 4:52 AM

Whether our future will follow a dystopic path centers on this.

Will the agent represent the individual or the organization?

The only world that doesn't lead to accelerated manipulation, wealth inequality, and ultimately oppression is the one where the is answer absolutely clear: It is the individual.

The social norms for this are being shaped right now. This is the most important question in AI.

We're distracted by the far less important questions. Safety, nationalism, and tribalism are how we don't talk about this.

This is /the/ important question of our time.

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kraf • today at 10:08 AM

Interesting. I wonder if it can become enforceable to say "not on my lawn". Sites could make deals with say Anthropic to make Claude respect some new rule in robots.txt and refuse to visit this site.

Should everyone and their grandma be allowed to send a robot to interact with any site?

AGivant • today at 10:27 AM

If let say CEO if some company asks his/her secretary to book a flight and provides payment information, how is this different from me asking Muse to do the same? Or only rich people can have helpers?

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olouv • yesterday at 10:15 PM

Not sure how they can detect an agent driving a regular browser, I have built Cupertino to more efficiently let Claude drive my mac (https://cupertino.mgcrea.io) and it can drive a regular Safari exactly like I would.

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zmmmmm • today at 12:59 AM

I see a lot of arguments about the merits, but to me the real question is whether this is sincere, or an ambit claim to get a cut of business from the companies pushing AI agents. It would be an obvious classic play to cut off access on spurious grounds and then let it back in for a slice of the action, on the pretext that the money is paying for some kind of additional assurance on the airline end.

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kopirgan • today at 10:29 AM

What personal info is being shared other than stuff that's already in most browsers auto fill data?!

ch_ase • yesterday at 10:21 PM

Maybe there’s a world where established companies license access only to their “preferred” agent. Not great for customers but more income and less headache for the company.

jwr • today at 5:37 AM

I was recently able to discover that London (especially some districts) has a HUGE bedbug problem. The only reason I found out was because I told Claude to go through my candidates on booking.com and check the 1-star reviews.

I would not have done it myself: it takes quite a bit of work and clickery to access all the reviews for every hotel.

Pretty sure booking.com will soon follow with an agent ban.

alienbaby • yesterday at 10:19 PM

I'm kinda suspicious of the stated motives. while plausible, has it happened very much? The cynic in me thinks this is to prevent agents hunting and findingthe best deals, and avoiding all the patterns used to squeeze more money from the buyer, like dangling attractive offers, not so obvious navigation and other tricks etc..

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rykam • yesterday at 9:56 PM

I wonder what pushed them to do it? Did something serious go wrong with some cases of agents booking flights, or is it more motivated from a fear of Big Tech AI gaming the dynamic pricing system that they control and potentially making them lose profits because the Agents will get much more optimal/cheap flights than mere mortals?

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jgeada • today at 2:42 AM

And I wish United would stop using AI agents and data about me to pick the price for a flight, and yet here we are.

If it is ok for them to do it, then it should also be ok for the customers to do it.

twright • yesterday at 11:10 PM

I have previously made a similar comment to this, but just to reiterate and expand it: the wave of “let agents automate everything” has a whiff of “let’s automate everything by plugging it into IFTTT.” In the end most companies pulled out of IFTTT because it ate into engagement and people actually using the platforms. If I automate posting to Instagram through an API, Meta is missing out on revenue from ads not being shown to me.

I predict the same thing happening with AI agents. The direct analogy here is United is missing out on revenue by being unable to trick me into paying to choose my seats or whatever. Luckily, it will be a harder for the platforms to cut off agents but they will try.

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_heimdall • today at 2:04 AM

These bans won't go any better than sites that refused to include advertising for the last two decades.

I don't like the "agentic web" any more than I liked the advertising-funded web, but that doesn't make me right. The web will continue to be less and less about human attention and more about LLMs using the web on our behalf. Advertising on the web will be useless, gobbled up by advertising on the LLM platforms.

OptionOfT • yesterday at 11:18 PM

It's interesting. First banks, now airlines.

What are airlines they really afraid of? That people get an advantage by comparing prices?

And for banks, for years US banks have managed to keep data internally, only exposing it through Plaid, and thus getting paid for it. API like the PSD2 in Europe allow me to connect my software to pull in the transactions for free. In the US you have to hand over money to say Monarch.

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geniium • yesterday at 10:27 PM

There must be another reason - not only “it’s not safe”

Usually they are for selling more tickets

So the question is : what are they not telling us ??

jwpapi • yesterday at 10:23 PM

Most people think these are dark patterns, but is not realized is that on a competitive market with multiple players you will get better prices when others pay worse.

It arguably makes it fairer. An option to trade effort => value.

If they would give the best price to everyone right away,the lowest price would be higher.

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jjmaxwell4 • yesterday at 11:35 PM

Was able to Muse to call the airline on 3 different occasions recently to resolve bulkhead request and service animal requests. Was very impressed.

If they make me wait in a phone tree for hours, they should be able to talk to my AI to resolve some issues.

damsta • yesterday at 10:56 PM

As much as I hate where the world is headed with AI, I can't deny how useful it is to have an agent navigate multi-step forms while recognizing all the tactics these websites use to upsell their garbage or trick you into accepting awful terms.

charles_f • yesterday at 11:14 PM

> sharing account credentials with [...] AI assistants can expose sensitive information

That kind of argument in bad faith is enough to tell they blocked it because it's detrimental to them and adventageous to customers.

shepherdjerred • yesterday at 10:48 PM

They won't be able to block agents unless they start requiring attestation. Which I doubt is going to happen considering Google, Meta, OpenAI, etc. all want their agents to be as useful as possible.

nukanse • yesterday at 11:58 PM

Airline frequent flyer programs have always been full of exploitable loopholes that most people weren't aware of, but AI can take advantage of them.

satvikpendem • yesterday at 9:59 PM

I mean, they can try. AI agents have computer use now so no website will actually be able to disambiguate between humans and AI anymore, so I can indeed tell my agent to book me a ticket.

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siliconc0w • yesterday at 10:10 PM

I already built my own AI agent browser use proxy service when Amazon was blocked. Seems like this will become a standard upgrade.

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tintor • yesterday at 10:33 PM

US needs a federal law to forbid business discriminating against agents that act on behalf of their owners.

Or at least a California state law.

mihaaly • today at 10:17 AM

I do not think they have any remote role in parenting anyone about sharing the chosen level of private data with AI for booking. Let people decide if they risk or not with using AI and when/how the terms and conditions are studied (not like current way is better more than miniscule, expecting heavy and long text to be digested at the last step of button pressing that can time out fast). United should not act as educator about people's privacy choices in their choice of systems other than United's.

Checking in is a different matter and understood. That is flight safety matter.

_superposition_ • yesterday at 10:28 PM

Why is anyone surprised? You would never need an agent to do this if the system was properly incentivised.

rohitshenoy • yesterday at 10:36 PM

Airline websites have sophisticated anti-bot but usestring.ai gets past it pretty easily

aizk • today at 12:41 AM

How can this be enforced?

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anuptalwalkar • yesterday at 11:03 PM

This is the future. Amazon blocked muse and outside agents, and now united is doing the same. If everyone follows this route, the concept of harness is practically dead and we will need an agent that manages specific type of agent that each company provides. What a waste of resourcez

bemtevi • today at 1:27 AM

United Airlines is the horrible company. Treated me badly when I wanted a refund. They initial said yes and then tried to change their minds. I hope they burn in hell.

WesolyKubeczek • today at 8:44 AM

Two years ago, I knew this would happen: no booking website will be happy with an automated agent of any kind which is the user’s agent. They will want it to be their own agent.

And the reason for it is that a good agent will just bulldoze its way through all dark patterns and ways to upsell you. And the airline or hotel (speaking from booking.com experience) want to upsell you so badly it hurts.

Which is why any agentic setup, except for a completely self-hosted one, is not viable in this situation.

xinjieshen • yesterday at 10:30 PM

I think this is for not replacing those auto investigation downstream platform like Trip.com by 'cheap' agent like Agent.

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