Booking Holdings runs a global travel marketplace through Booking.com, Priceline, Agoda, KAYAK, and OpenTable. The group connects traveler demand with accommodation providers, airlines, car rental companies, attractions operators, and restaurants across more than 220 countries and territories. In 2025, it generated $26.9 billion in revenue, split into $17.8 billion of merchant revenue, $8.0 billion of agency revenue, and $1.2 billion of advertising and other revenue. Substantially all revenue still came from online travel reservation services.
The key model shift is the move toward merchant transactions at Booking.com. Merchant gross bookings reached $130.0 billion in 2025, up 24.8%, while agency gross bookings fell 8.7% to $56.1 billion. Merchant mix rose to 70% of total gross bookings, up from 63% in 2024. This gives Booking more control over checkout, payments, merchandising, and cross-sell across its Connected Trip strategy. It also raises payment processing, fraud, and service costs, which puts pressure on margins even as the revenue mix improves.
Core activities
- Accommodations marketplace (Booking.com, Agoda, Priceline)
Accommodations remain the economic core of the group. About 89% of 2025 revenue came from online accommodation reservation services, and the majority of merchant revenue plus substantially all agency revenue came from Booking.com accommodation bookings. At year-end 2025, Booking.com listed about 4.4 million properties, up from about 4.0 million a year earlier, including about 3.9 million homes, apartments, and other alternative accommodations. Alternative accommodations accounted for about 36% of Booking.com room nights in 2025.
- Flights, rental cars, ground transportation, and attractions
These categories deepen the Connected Trip and broaden gross bookings beyond stays. In 2025, Booking.com offered flights in more than 55 markets and also sold tours and activities, rental cars, and ground transportation across thousands of locations worldwide. Across the group, airline tickets rose to 68 million and rental car days reached 88 million in 2025. Flight gross bookings grew 29% year over year, which made air travel one of the fastest-growing verticals inside the platform.
- Payments and merchant processing
Payments sit at the center of Booking’s evolving model. Merchant revenue includes commissions, transaction net revenue, payment facilitation income such as credit card rebates and customer processing fees, and ancillary fees including travel-related insurance. Management presents payments as a core enabler of the Connected Trip because they support local payment methods, flexible timing, and smoother cross-vertical booking flows.
- Advertising and metasearch (KAYAK plus ad placements)
KAYAK adds a different monetization layer. It earns mainly from referral clicks to online travel companies and travel suppliers and from advertising placements on its platforms. KAYAK operates in more than 60 countries and territories. Its search activity does not flow into Booking Holdings’ gross bookings, so it supports monetization and traffic without carrying the same transaction profile as the core OTA brands.
- Restaurants and software (OpenTable)
OpenTable extends the platform into dining. It generates revenue from consumer restaurant reservations and subscription fees for restaurant management services, mainly in the United States. Like KAYAK, OpenTable contributes to advertising and other revenue rather than to gross bookings.
Booking Holdings remains one of the largest online travel platforms globally. In 2025, it processed 1.235 billion room nights and generated $186.1 billion in gross bookings. Booking.com’s accommodation breadth, its growing alternative accommodation base, its rising merchant mix, and its expanding cross-sell into flights and attractions reinforce that scale advantage. Competition remains intense from Airbnb, Vrbo, direct hotel and airline channels, Google, and newer AI-powered assistants that aim to intercept search, trip planning, and booking before the traveler reaches Booking’s own platforms.