The OTAs Just Put Two Numbers on AI: It Converts 2×. It Weighs Under 1%.

In one week, Booking Holdings, Expedia and Airbnb all reported their quarters. All three were asked about AI. For the first time, the answers came with numbers — and the two numbers point in opposite directions.

Travelers who use Booking Holdings' AI assistants, at Priceline and Agoda, convert at about twice the rate of those who don't, with booking values around 20% higher at Agoda. And traffic referred to Booking.com from ChatGPT and the other LLMs is still "significantly less than 1%" of room nights.

Same company, same call. Inside the house, AI doubles the close. Outside the house, it barely sends anyone.

What the three said

• Booking: 2× conversion, +20% booking value, under 1% referrals. Organic referrals grew after the newest ChatGPT models; paid ones grow as it buys ads from OpenAI in more markets. CEO Glenn Fogel's warning: European rules on personal data may slow personal agents "much more than anticipated."
• Expedia: testing OpenAI's ad products and willing to accept "returns that aren't as high." CEO Ariane Gorin: agentic traffic is high-intent but small, and "either incremental or taken from other paid channels." Her line of the week: "agentic AI's real strength is in discovery; when it comes to bookings, people still want to book with a trusted brand." Meta's Muse went live with Expedia's prices that same night.
• Airbnb: its own agent arrives in the first half of 2027. Brian Chesky said Muse and Instinct bring "little traffic and even fewer bookings" against roughly 500,000 bookings a day — and that a specialized agent must be "2, 3, 5× better" than a general one to win.

Booking.com's Asia-Pacific chief put the gap in one sentence: travelers search "on Claude one minute, ChatGPT another," then come to Booking directly. 64% of travelers in her region plan with AI. Under 1% arrive from it.

The reading nobody made

The industry keeps asking how many guests ChatGPT will send. The honest answer, from the people with the most data, is: almost none, yet. Independent hotels' own analytics say the same — AI referrals to hotel websites quadrupled this year and still sit under 1% of visits, converting about as well as Google organic.

So the volume story is for 2027. The conversion story is now. When the assistant lives where the booking happens, it doubles the close. That isn't an OTA trick. It's what a conversation does to a hesitant buyer: it answers the question that was about to send them to the next tab.

For a 30-room hotel the number to watch isn't "AI traffic." It's your own direct conversion. The average hotel website converts somewhere between 1.5% and 3.5% of visits, and the funnel loses most people between "check rates" and "pay." Those are los indecisos — and they are exactly who an assistant converts at 2×.

The OTA is the lab, not the enemy

Booking ran the experiment on hundreds of millions of visitors and published the result. The lesson travels: discovery is fragmenting, which is good for whoever can be found; closing still belongs to whoever the guest trusts. On your own site, on your own WhatsApp, that's you.

The takeaway: three things this week. Measure your direct conversion — booking-engine visits divided by bookings, by month. That's the number a conversation can move; AI referrals can't yet. Treat external AI like SEO: exact facts everywhere, no budget obsession — it's under 1% and it's free. And read the conversations where a guest asked and didn't book — email, WhatsApp, phone. The question they asked at 11pm is where the 2× lives. AI is my wingman where the guest already is; the human decides what we promise.