For more than a decade, a comfortable consensus shaped the narrative of the global online travel agency (OTA) duopoly. Booking Holdings was widely recognized as the undisputed titan of direct-to-consumer (B2C) hotel bookings, leveraging its massive global footprint and efficient performance-marketing engine. Meanwhile, its archrival, Expedia Group, was viewed as the uncontested sovereign of the business-to-business (B2B) space—the behind-the-scenes engine powering travel portals for banks, airlines, corporate travel networks, and offline travel agencies worldwide.
That long-held industry assumption has now been fundamentally challenged.
A detailed analysis by Wall Street research firm BTIG suggests that the competitive landscape of B2B travel distribution is not what it seems. According to estimates compiled by BTIG analyst Jake Fuller, Booking Holdings’ B2B business has quietly grown to a scale that actually eclipses Expedia’s celebrated partner division. The revelation has sent ripples through the travel industry, signaling a major realignment in how the world’s largest travel companies compete for lucrative third-party inventory distribution.
A Shift in the Balance of Power
For years, Expedia’s B2B segment, operating largely under the banner of Expedia Partner Solutions (EPS), has been the crown jewel of its growth story. By supplying hotel rooms, flights, car rentals, and package deals to white-label partners, Expedia built a highly resilient, high-volume revenue stream. Because Expedia explicitly breaks out its B2B financial performance in its public earnings reports, the market had a clear, quantifiable view of its dominant scale.
Booking Holdings, by contrast, has never disclosed specific financial metrics or booking volumes for its B2B operations. This lack of transparency led most industry observers, analysts, and competitors to assume that Booking’s partner business was merely a secondary, minor division compared to its massive direct-to-consumer platform.
BTIG’s research turns that assumption on its head. Fuller estimates that Booking Holdings’ B2B operations booked approximately 196 million room nights over the past 12 months. In comparison, Expedia’s highly regarded partner business generated roughly 170 million room nights over the same period.
According to BTIG’s calculations, Booking’s B2B volume is now about 15% larger than Expedia’s.
"The consensus is that BKNG’s B2B business is probably small given the lack of disclosure, but that’s not the conclusion we come to," Fuller wrote in his research note.
This finding completely rewrites the competitive narrative between the two online travel giants. Rather than playing catch-up, Booking Holdings appears to have quietly built the largest B2B travel distribution engine in the world, operating right under the industry’s nose.
The Power of the Invisible Engine: Why Scale Remained Hidden
The primary reason this shift went unnoticed for so long lies in the starkly different reporting methodologies of the two travel conglomerates.
Expedia Group has made its B2B business a centerpiece of its corporate identity and investor relations. In its second-quarter earnings report, Expedia disclosed that its B2B segment grew revenue by an impressive 23% year-over-year, reaching $1.5 billion. This performance significantly outpaced Expedia’s larger consumer-facing business, which grew by a modest 8% to $2.7 billion over the same period. By laying these figures bare, Expedia gave Wall Street tangible proof of its B2B prowess, cementing its reputation as the market leader.
Booking Holdings, on the other hand, has historically chosen to group its B2B revenues and volumes within its broader consolidated metrics. Without dedicated line items for partner distribution, analysts were left to estimate the scale of Booking’s B2B operations using indirect clues, such as merchant-model revenue growth and qualitative commentary from executives.
This lack of disclosure masked a massive, multi-brand B2B engine. While Booking.com is primarily known as a direct consumer brand, Booking Holdings also owns Priceline and Agoda. Both of these brands possess highly sophisticated, deeply entrenched B2B distribution networks.
Priceline Partner Network (PPN), for instance, has spent years quietly powering travel booking engines for major brands, financial institutions, and loyalty programs across North America. Similarly, Agoda has built a formidable wholesale and B2B distribution footprint across Asia-Pacific, supplying inventory to thousands of offline travel agencies and regional online portals.
By aggregating the quiet successes of these individual brands, Booking Holdings amassed a B2B footprint that quietly overtook its primary rival in sheer volume.
The Economics of B2B Travel Partnerships
To understand why this quiet coup is so significant, one must understand the unique economics of B2B travel distribution.
In the traditional direct-to-consumer (B2C) model, OTAs like Booking.com and Expedia spend billions of dollars annually on performance marketing—primarily Google search ads—to acquire customers. This constant bidding war represents one of the largest operating expenses for both companies. If a consumer books a hotel room directly through Booking.com, a significant portion of the commission earned from that booking goes toward covering the cost of acquiring that customer in the first place.
B2B distribution operates on an entirely different financial logic. Instead of spending money on search engine marketing to attract individual travelers, the OTA partners with an established third party that already has a captive audience.
These partners can include:
- Financial Institutions: Credit card companies (such as Chase, Capital One, or American Express) that offer travel booking portals as part of their credit card rewards and loyalty programs.
- Airlines and Loyalty Programs: Carriers that want to offer hotel rooms or car rentals directly on their websites to capture more of their flyers’ total travel spend.
- Offline and Regional Travel Agencies: Smaller, traditional travel agencies that lack the technology or direct hotel relationships to source global inventory on their own.
In a B2B arrangement, the OTA provides the underlying technology, API integrations, customer service infrastructure, and—most importantly—access to its vast supply of contracted hotel rooms and travel inventory. The partner handles the customer acquisition.
While the OTA must split the booking commission with the partner, the transaction carries virtually zero direct marketing cost. This makes B2B volume highly stable, predictable, and incredibly valuable for maintaining high occupancy rates across an OTA’s global supplier network.
Inside Booking’s Reorganization: What It Means for Competition
The revelation of Booking’s B2B scale comes at a critical juncture. Booking Holdings is currently undergoing an internal, in-process reorganization aimed at streamlining its operations and improving efficiency across its portfolio of brands.
Historically, Booking Holdings has operated its various brands—Booking.com, Priceline, Agoda, Kayak, and OpenTable—as largely autonomous silos. While this decentralized structure allowed each brand to innovate rapidly and maintain its unique culture, it also created redundancies, particularly in technology development and partner relations.
The ongoing reorganization appears designed to break down these silos, allowing the company to leverage its collective scale more effectively. In the B2B space, a more unified corporate structure could have profound implications.
If Booking Holdings successfully integrates the B2B capabilities of Priceline, Agoda, and Booking.com into a cohesive, centralized partner solutions platform, it will create an incredibly formidable competitor. A unified B2B offering would allow Booking to present a single, powerful API to prospective global partners, offering unparalleled inventory depth, competitive pricing, and global reach.
For Expedia, this represents a direct threat to its traditional safe haven. For years, even when Expedia struggled to match Booking’s explosive B2C growth in Europe and international markets, it could always point to its B2B dominance as a key competitive differentiator and a high-margin growth engine. If Booking Holdings begins to aggressively leverage its superior volume and newly reorganized B2B structure to court major enterprise clients, the battle for premium bank loyalty programs and airline partnerships will intensify dramatically.
The Battle for the Future of Third-Party Distribution
The stakes in this B2B rivalry are higher than ever, driven by a broader macroeconomic shift in how consumers book travel.
In recent years, major financial institutions have aggressively expanded their travel loyalty ecosystems. Premium credit cards have increasingly turned travel portals into key selling points to attract and retain high-spending cardholders. These financial institutions are not travel companies; they do not want to manage direct relationships with hundreds of thousands of hotels worldwide, nor do they want to build complex booking engines from scratch. They rely entirely on OTAs to power their backend systems.
As these loyalty portals grow to represent a larger share of global travel bookings, the OTAs that power them stand to capture massive, recurring transactional volume. Winning or losing a single major contract—such as powering the travel portal for a major global bank or a massive international airline alliance—can shift millions of room nights and hundreds of millions of dollars in revenue from one OTA to another.
With BTIG’s estimates revealing that Booking Holdings is already operating at a larger B2B scale than Expedia, the competitive dynamics of these enterprise pitches will inevitably shift. Booking can now pitch prospective partners with the leverage of being the largest volume player in both the consumer and partner spaces, while Expedia will be forced to defend its market share with renewed urgency.
Ultimately, the revelation that Booking Holdings’ B2B business is significantly larger than previously understood changes the industry’s understanding of the OTA duopoly. It proves that the quiet, behind-the-scenes world of partner distribution is no longer a secondary sideshow, but rather the primary battleground where the future of global travel distribution will be decided.
