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What is an OTA, when to use it (and when to stop relying on it) in your hotel
Summary
Introduction
What is an OTA
How an OTA works: the business model
The main OTAs in Spain: which one to choose
Advantages of OTAs for hotels
Disadvantages and hidden costs of OTAs
Why is the human factor no longer enough to compete with OTAs?
The optimal strategy: OTAs + direct channel + automation
When it makes sense to rely more on OTAs (and when less)
FAQ: Hotel OTAs
If you own a hotel, a guesthouse, or a tourist apartment, you know exactly what an OTA is even if you have never heard the term before: it is Booking.com, Expedia, Airbnb, Hotels.com. It is that platform that brings you bookings every month in exchange for a percentage that hurts every time you see it on the invoice.
OTAs are a reality of the modern hotel sector. Ignoring them would be a mistake. But relying on them excessively is just as dangerous — and many hoteliers discover this too late, when they have already built their entire distribution strategy on a foundation they do not control and which takes between 15% and 25% of each booking.
This guide explains exactly what an OTA is, how it works, what its real advantages and hidden costs are, when it makes sense to use it, and when the direct channel — supported by technology — is the profitability lever that the best independent hotels are already using.
What is an OTA
OTA stands for Online Travel Agency. They are digital platforms that act as intermediaries between the traveler and the accommodation: the customer searches for a hotel on the platform, compares options, books, and pays, and the platform transfers the reservation to the hotel, charging a commission for the service.
The most relevant OTAs in the Spanish and international markets are:
Booking.com — the most used in Spain and Europe. Typical commissions: 15-25%.
Expedia / Hotels.com — strong in the Anglo-Saxon and American markets. Commissions: 15-25%.
Airbnb — originally for private apartments, with a growing presence of boutique hotels and hostels. Host commissions: 3-5% (but also charges the guest).
TripAdvisor / Viator — review platform with an integrated booking engine.
OTAs do not own any accommodation — they are technological intermediaries. Their value to the traveler is comparison and convenience: on a single website they can see availability and prices for hundreds of hotels. Their value to the hotel (in theory) is visibility and access to a global market that would be impossible to reach on its own.
How an OTA works: the business model
The OTA business model is based on commission per confirmed booking. The hotel uploads its availability and rates to the platform through a channel manager or directly from its PMS. When a customer books, the OTA confirms the booking to the customer and notifies the hotel.
The hotel pays the agreed commission on the booking price — generally between 15% and 25% of the total amount, either deducted directly or invoiced monthly depending on the platform's model.
There are two main contract models with OTAs:
Agency model (merchant model): The OTA charges the customer at the time of booking and settles with the hotel later (deducting the commission). Expedia mainly uses this model.
Commission model (agency model): The hotel charges the customer directly at the time of check-in or check-out and invoices the commission to the OTA separately. Booking.com mainly uses this model, although it has been introducing prepaid variants.
In both cases, the cost for the hotel is similar: between 15% and 25% of each booking managed by the platform.
The main OTAs in Spain: which one to choose
Not all OTAs generate the same volume or are equally relevant for all types of accommodation. This is a general reference for the Spanish market:
Booking.com
It is the dominant OTA in Spain and Europe. For most independent hotels, boutique hotels, guesthouses, and rural houses, Booking.com is the OTA with the highest volume of bookings. Its penetration in the Spanish market is especially high among domestic and European travelers.
When to prioritize: always, as a baseline presence. Visibility on Booking.com is practically mandatory for any accommodation wanting to compete in online distribution.
Expedia / Hotels.com
Strongest in the North American market and with long-distance travelers. If your hotel receives American, Canadian, or Latin American tourism, Expedia provides volume that complements Booking's.
When to prioritize: urban hotels in tourist cities with a flow of international travelers, especially Anglo-Saxon.
Airbnb
Originally focused on non-hotel accommodations, Airbnb has incorporated boutique hotels, hostels, and professionally managed tourist apartments. Its commissions for the host are lower than those of traditional OTAs, but the customer profile and the type of accommodation that works are specific.
When to prioritize: tourist apartments, boutique hotels with a strong personality, rural accommodations with a distinctive proposal.
Advantages of OTAs for Hotels
OTAs offer real advantages. Ignoring them would be dishonest and counterproductive:
Immediate visibility without marketing investment. A hotel registering on Booking.com immediately appears before millions of travelers. Building that level of visibility organically with its own marketing would take years and an investment far exceeding the commissions paid to the platform.
Access to international markets. A rural hotel in Castilla wishing to attract German tourists does not have the infrastructure to reach that market directly. Booking.com does. OTAs are the most efficient international distribution channel for independent accommodations.
Free booking engine. OTAs offer a fully operational online booking system with no implementation cost. For small hotels that do not want to invest in their own booking engine, this is a practical solution.
Payment and guarantee management. OTAs handle prepayments, credit card guarantees, and cancellation policies with the customer. They reduce the risk of non-payment and the hotel's administrative workload.
Verified reviews. The review section of Booking.com (where only customers who have booked and stayed can leave a review) is one of a hotel's most valuable reputation assets. Being on the platform is not just about distribution — it is also about reputation management.
Pay-per-performance. Unlike traditional advertising, with OTAs, the hotel only pays when a booking is made. There is no risk of investment without a return.
Disadvantages and hidden costs of OTAs
Here is the part that OTAs do not advertise in their sales presentation:
Commissions dramatically reduce the real margin
A hotel with an ADR of €100 that channels 70% of its bookings via Booking.com at a 20% commission is giving away €14 of every €100 of revenue to the platform. If the hotel's operating margin is 25-30%, that represents between 46% and 56% of the net profit of each booking.
Put another way: out of every euro the hotel earns on an OTA booking, almost half is kept by the platform.
Rate parity: you cannot sell cheaper on your website
Most contracts with OTAs include rate parity clauses: the hotel cannot offer a lower rate on its website than on the platform. Although the strict application of these clauses has been legally challenged in several European countries, in practice many hotels respect them, which eliminates one of the most powerful arguments for capturing direct bookings (price).
The customer belongs to the OTA, not the hotel
When a customer books through Booking.com, their details belong to Booking.com. The hotel does not have direct access to the customer's email to communicate prior to arrival, cannot include them in its loyalty program, and cannot do post-stay follow-up. The relationship with the customer is managed by the platform, and if the customer has an issue, it is sometimes also managed by the platform on behalf of the hotel.
Dependence on the algorithm
Your visibility on Booking.com or Expedia does not depend on the quality of your hotel — it depends on the platform's algorithm. A hotel with a 9.2 rating can rank below one with an 8.5 if the second has a better cancellation rate, more photos, or better response to reviews. The algorithm changes, and when it does, your booking volume can drop from one month to the next without you having done anything wrong.
OTAs capture your direct traffic
The phenomenon known as the billboard effect works both ways: OTAs generate visibility for your hotel (advantage), but they also capture traffic from customers who already know your hotel and search for it by name. A customer searching for "Hotel Rural La Dehesa" on Google sometimes ends up booking on Booking.com instead of the hotel's website — because the OTA appears first in the paid results.
Why is the human factor no longer enough to compete with OTAs?
The direct channel has the potential to be more profitable, more personalized, and build more loyalty than any OTA. But there is a catch: it has to work just as well.
And that is where the problem lies for most independent hotels. The customer who arrives at your website from Google needs to find real-time availability, a booking engine that works, a competitive price, and if they decide to call, someone to pick up the phone.
That last point is where 30-40% of the direct channel's potential is lost. The customer who prefers to call to confirm a detail before booking, the one who gets home late after work and decides to plan their vacation at 10 p.m., the family group that wants to speak with someone before booking a multi-day stay.
If no one answers those calls, the customer doesn't wait until tomorrow — they go back to Booking.com, where there is instant availability and confirmation at any hour. The OTA has won back the booking that the direct channel almost had.
Response speed in the voice channel is now the deciding factor in whether a booking is direct or goes to the OTA. And this is exactly where automation can immediately change the outcome.
The optimal strategy: OTAs + direct channel + automation
The goal is not to abandon OTAs — it's to reduce dependency and progressively increase the mix of direct bookings. The strategy being used by the most profitable independent hotels in 2026 combines three elements:
OTAs for visibility and baseline volume
OTAs are the shop window where travelers discover your hotel. Being well-positioned on Booking.com and Expedia is essential, especially for capturing international traffic and new guests who do not yet know your property. The goal is not to leave OTAs — it's to not depend on them for 100% of the volume.
Direct channel for margin and customer relationship
Each booking that comes in directly (web, phone, WhatsApp, Google Hotel Ads) generates between 15% and 25% more margin than the same booking via OTA. And the customer who books directly is yours: you can communicate with them before arrival, build loyalty, ask for a review at the exact right moment, and ensure they book directly again next time.
Automation so that the direct channel works 24/7
The direct channel cannot depend on someone always being available to answer the phone or reply to WhatsApp. Automation with Bookline closes that gap: every direct call that was previously missed after hours or during peak times is now converted into a direct booking.
The result of combining these three elements: maintaining OTA volume while the mix of direct bookings grows month after month, improving margin without the need to raise prices or reduce occupancy.
When it makes sense to rely more on OTAs (and when less)
Not all hotels have the same starting point. In some cases, a greater reliance on OTAs makes sense, at least temporarily:
More reliance on OTAs makes sense when:
The hotel has just opened and needs to build reputation and reviews from scratch.
The hotel is in a destination with very high seasonality and needs to maximize occupancy in short windows.
The hotel does not yet have a website with a functional booking engine or infrastructure for the direct channel.
The hotel's main market is international and direct distribution is difficult.
Reducing reliance on OTAs is a priority when:
More than 60% of bookings come via OTAs and commissions are squeezing margins unsustainably.
The hotel has a base of repeat guests with loyalty potential who currently book via OTAs out of habit.
The hotel's website has organic traffic but does not convert into direct bookings.
The hotel has the capacity to handle direct bookings but lacks the infrastructure to capture them (booking engine, telephone customer service, WhatsApp response).
FAQ: Hotel OTAs
What does OTA mean in hospitality? OTA stands for Online Travel Agency. They are platforms like Booking.com, Expedia, or Airbnb that act as intermediaries between the traveler and the accommodation, charging a commission to the hotel for each reservation managed. They are the main online distribution channel for most independent hotels.
What commission does Booking.com charge hotels? Booking.com's standard commission ranges between 15% and 25% of the booking amount, depending on the contract type, the country, and the level of participation in the platform's visibility programs. The commission is billed monthly based on completed stays (excluding cancellations).
Can I sell cheaper on my own website than on Booking.com? Price parity clauses from traditional OTAs restrict offering lower public rates on other channels. However, it is possible to offer exclusive benefits to the direct channel (breakfast included, upgrade, free parking, early check-in) that make booking on your website more attractive without lowering the nominal price. Always check the specific conditions of your contract.
Is it mandatory to be on an OTA to have a hotel? It is not mandatory, but for most accommodations, it is practically necessary to be visible in today's online market. The question is not whether or not to be on OTAs, but what percentage of the booking mix they should represent. The strategic goal of most independent hotels is to be on OTAs for visibility and to capture as many direct bookings as possible for profitability.
How can I reduce my dependence on OTAs? The main triggers are: developing a website with an optimized booking engine, working on positioning in Google Hotel Ads, creating a loyalty program that incentivizes direct bookings on the next visit, and automating voice channel customer service to not miss any direct calls. Reducing OTA dependence is a gradual process — a reasonable goal is to move from 70% to 50% OTA bookings in 12-18 months.
What is the OTA billboard effect? The billboard effect is the phenomenon where being on an OTA generates additional traffic to the hotel's direct channel — the customer discovers the hotel on Booking.com but then searches for it by name and books on the official website. Industry studies estimate that this effect can account for between 7% and 26% of additional direct bookings. However, OTAs also capture traffic in the opposite direction: customers who already know the hotel and search for its name end up booking on the platform for convenience or price.
How does review management on OTAs affect bookings? Hugely. The average rating on Booking.com is one of the main decision-making factors for travelers and one of the criteria for the platform's algorithm. A hotel with a 9.0+ score has notably superior visibility and conversion compared to one with an 8.0 score. Actively managing reviews — responding to all of them, especially negative ones — is a fundamental part of the OTA distribution strategy.