The Evolution of Flight Search: Why OTAs Are Winning Again and How Airlines Can Regain the Lead

PROS is a dedicated travel technology company helping airlines outperform with AI-driven retailing and offer management that delivers customer-centric experiences and maximizes revenue performance.

Key Takeaways

  • AI platforms are changing how travelers discover and evaluate flights before booking.
  • OTAs currently have an advantage because their content is more structured and AI-readable than many airline websites.
  • Airlines are losing visibility not because they lack data, but because AI systems cannot easily access or interpret it.
  • In AI-driven search, being linked matters more than simply being mentioned.
  • Generative Engine Optimization (GEO) is becoming essential for airlines that want to drive direct bookings through AI search.
  • Structured, persistent route pages are now critical for AI visibility and citation.
  • PROS airTRFX helps airlines create AI-readable route pages designed to improve visibility, citation, and direct bookings.
  • Airlines that make their offers easier for AI to understand and trust will be better positioned to compete in the next generation of search.

You open ChatGPT and ask a simple question: 

Find me flights from Miami to Chicago next month. 

Within seconds, you have recommendations: flight options, price ranges, the best days to travel, and even what to expect along the way. 

Then you click. Not to an airline website…but to an online travel agency. 

This is the shift underway in travel. While traditional search engines still drive the majority of airline discovery and traffic today, AI platforms like ChatGPT and Google Gemini are increasingly influencing how travelers research and evaluate options. Instead of simply returning links, these systems interpret choices, summarize information, and guide decision-making before a traveler reaches a booking path.  
 
And AI is quickly becoming a high-intent channel for travel search. 

“AI search traffic is emerging, yet it’s proved to be a high-intent channel: ChatGPT referrals show a +7.48ppt higher Flight Search Initiation rate than Google Organic,” said Enmanuel Tirado, Head of SEO and Digital Insights at PROS. 
 
And these AI platforms are not neutral. They prioritize surfacing sources that better align with the travelers’ needs, are technically accessible, and rich in structured travel content. Brands that have the so called ‘answer.’ 

Today, that often means OTAs and aggregators. Not necessarily because they have better offers, but because they expose fares, flight details, booking insights, and policies in formats that AI systems can easily crawl and interpret. While on the other hand, many airline websites still rely on client-side rendering, inconsistent route pages, or crawler restrictions that limit visibility. 

It’s not enough for airlines to be mentioned in AI responses. They have to be linked. The link determines where the transaction happens—and who gets the sale. 

The Invisible Barriers: Why AI Isn’t Seeing Your Fares

This is not a demand problem. It is a visibility problem. 

Most airline pricing and availability are rendered client-side, relying on JavaScript. AI assistants do not execute JavaScript. If your fares depend on it, they are essentially invisible. OTAs took a different approach. They built server-rendered, indexable pages that expose pricing, schedules, and policies in structured formats. That content is easy for AI to parse and source. 

Airlines face a second issue: a lack of persistent entry points. 

Without dedicated route pages, for example Miami to Chicago, Dallas to New York, AI has nothing stable to reference. No consistent URL. No structured context. No reason to link to the airline instead of OTA or flight aggregator. 

These pages are no longer optional. They are now required. 

There is also a third barrier: access. Many airline websites either unintentionally restrict AI crawlers through existing technical configurations or block them intentionally for policy reasons, such as protecting pricing data or limiting model training access. As a result, even when the data exists, it may not be reachable. 

Visibility depends on three things: structure, persistence, and access. 

Most airlines are missing at least one.
 

Strategy: Bridge the Content Gap to Win the Citation War

To understand how airlines win here, you need to understand how AI builds an answer. 

When a traveler asks a question, the system breaks it into multiple queries—pricing trends, route duration, booking windows, policies. This is the query fan-out process in which one question becomes many. Each query pulls from different sources. The sources that provide clear, structured answers are the ones that get cited. 

That citation becomes the link. That link becomes the booking path. 

Airlines aren’t being linked due to a lack of data. They’re not being linked because they’re not exposing data in a usable way. 

AI doesn’t need a booking engine. It needs information it can trust: 

  • Flight durations and schedules  
  • Booking insights, like cheapest days to fly  
  • Clear policy information  
  • Pricing context and trends  
“For airlines, the opportunity is to capture that demand directly by scaling the content AI needs to trust and cite.”
-Enmanuel Tirado, Head of SEO and Digital Insights, PROS

This is the next evolution of SEO. By bridging the content gap, you’re able to optimize not only for search engines, but also AI platforms.  

This is Generative Engine Optimization (GEO). While still an emerging discipline, GEO is the practice of optimizing content, structured data, and digital experiences so AI systems can accurately interpret, trust, cite, and link to your brand within AI-generated answers.  

The objective is no longer just driving clicks. It is ensuring your airline is cited and linked within AI-generated answers so customers book directly with you rather than through OTAs. 

How PROS (airTRFX) Bridges the Gap

This requires new infrastructure. 

PROS airTRFX enables airlines to generate server-side, AI-readable route pages automatically, making offers visible to AI systems. It creates persistent pages for every route, enriched with the data AI prioritizes: pricing trends, flight facts, booking insights, schedules, and policies. 

Through AI search, these pages are designed to be cited directly in AI-generated responses, turning airline content into the linked source.

“This is where airTRFX becomes critical: it helps airlines turn every route page into a structured, content-rich, AI-readable entry point with fares, schedules, flight facts, and booking insights that move travelers closer to booking”
-Enmanuel Tirado, Head of SEO and Digital Insights, PROS

Capabilities like the Quick Facts Widget further strengthen this by surfacing structured data (flight duration, booking windows, price trends) in formats aligned to how AI constructs answers during query fan-out. 

The result is a tiered data strategy. 

Foundational data ensures visibility. Richer insights increase relevance and likelihood of selection. 

This is how airlines move from being indexed to being cited, and from being cited to being booked.

Taking Back the Lead

Airlines have to adapt to how travelers now use AI to discover flight options and make purchasing decisions. 

In AI-driven search and commerce, visibility is earned through structured data, technical accessibility, and content designed for AI systems to interpret—not just for humans to read. The airlines that invest in this will do more than appear in search results. They will be cited, linked, and recommended within AI-generated answers. 

This is where solutions such as PROS airTRFX become increasingly important. By helping airlines create dynamically generated, structured, and searchable offer pages tied directly to live fares and inventory, airTRFX can make airline content more accessible and intelligible to AI systems responsible for generating travel recommendations and answers. 

In this next generation of search, the advantage will go to the airlines that make their offerings easier for AI to understand, trust, and surface directly to travelers.  

Learn More about airTRFX Schedule a demo

Why are OTAs gaining visibility in AI-powered search experiences? 

OTAs and aggregators often expose fares, schedules, booking insights, and policies in structured, AI-readable formats. This makes their content easier for AI systems to crawl, interpret, and cite within AI-generated answers. 

Why are many airline fares difficult for AI systems to access? 

Many airline websites rely on client-side rendering and JavaScript to display pricing and availability. AI assistants do not execute JavaScript, which can make fare content effectively invisible to AI systems. 

Why do airlines need dedicated route pages? 

AI systems rely on persistent, structured entry points to reference and cite information. Dedicated route pages provide stable URLs and consistent context that help AI platforms surface airline content directly instead of linking travelers to OTAs or aggregators. 

What is Generative Engine Optimization (GEO)? 

Generative Engine Optimization (GEO) is the practice of optimizing content, structured data, and digital experiences so AI systems can accurately interpret, trust, cite, and link to a brand within AI-generated answers.

Why is citation within AI-generated answers important for airlines? 

Being mentioned is not enough. The link within an AI-generated response determines where the traveler goes to complete the booking and who captures the sale. 

Is AI ready to complete airline bookings directly? 

The blog notes that AI-native “instant checkout” experiences are still early and currently face challenges, especially in airline retailing where offers constantly change based on inventory, pricing, ancillaries, policies, and traveler inputs. 

What kind of information do AI systems prioritize when generating travel answers? 

AI systems prioritize trusted, structured information such as flight schedules, durations, pricing trends, booking insights, and policy information when constructing responses for travelers. 

How does PROS airTRFX help airlines compete in AI-driven search? 

PROS airTRFX helps airlines generate server-side, AI-readable route pages enriched with fares, schedules, flight facts, pricing trends, booking insights, and policies. This makes airline content more visible and easier for AI systems to cite and link directly to travelers. 

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