7 KPIs for OTAs that you SHOULD be watching already

🕒 7 min.

Online travel agents must evolve to overcome today’s challenges while remembering why customers loved them in the first place

The outlook for the international travel industry remains broadly positive, although price growth is expected to slow. Despite a projected 3.5 percent growth for the global economy in 2020, airfares are set to increase by a modest 1.2 percent, hotel rates by 1.3 percent, and rental car rates up one percent during the year ahead.

In addition to sluggish growth, online travel agents (OTAs) are facing an increasingly competitive marketplace, a rise in operating costs, and pressure on margins.

With the launch of Google Travel earlier this year, the search giant is emerging as a serious competitor in the OTA space.

And in order to stay high in its search results, OTAs are still having to hand Google billions of dollars each year in search engine marketing fees – a cost which can account for as much as one third of an OTA’s revenue. This can affect the profit margin in tourism industry significantly.

There is also potential pressure on margins as travel and hospitality operators strive to reduce their distribution costs as well as trying to get more travelers to book directly with them. Some resort to dynamic packaging to improve their offer.

Online travel agency performance metrics or KPI

In the face of such challenges, now is a good time to review your key performance indicators (KPI) and perhaps re-model them or establish some new ones. Keep in mind that big data in the travel industry can become a problem if you don’t prepare for it.


In 2021 we generated $80M of extra profit for OTAs like you.

Remember that your acquisition KPIs must be measurable and have a target (usually a numeric value) within an established timeframe. Although related, KPIs are not the same as the metrics used in your financial reporting. KPIs tend to be expressed as percentages or ratios that allow you to see how different areas of your business are performing in relation to each other. Each of your KPI must also be based on a specific data source so there is no ambiguity as to how each KPI is measured and monitored.

We understand that your primary goal is to sell travel products and make the biggest return on investment while doing so. Therefore it is sensible to use a collection of KPIs that closely focuses on managing your costs while at the same time tracking your online reach.

During the good times it is easy and understandable to bask in the glories of your top-line growth. The danger, however, is that to keep feeding your revenue growth, your cost of sales metric starts to creep up, ultimately eating into your profits.

Online travel agency KPI examples

The following KPI will tell you a lot about your sales and marketing strategy but also your operation in general.

Cost-of-Sales Percentage


Cost-of-Sales Percentage is the total cost of converting a sale in relation to the revenue it generated. It is also known as the expense ratio. Ideally, you should have software or reporting capabilities that allow you to see how each individual sales channel is performing for you. This will enable you to intelligently allocate your ad spend and marketing budget.

How to measure it

Cost-of-Sales Percentage = Click Costs Per Purchase ÷ Revenue from Purchase.


A customer buys a travel package that costs $1,000 and the cost of the clicks to make that purchase was $100, then the Cost-of-Sales Percentage is 10%.

Cost Per Acquisition


Cost per Acquisition tells is an acquisition KPI that defines how much you’re spending on advertising in relation to how many sales you are making. Again, ideally you will be able to calculate Cost per Acquisition in each individual channel to help you understand which are profitable and which are not.

How to measure it

Cost Per Acquisition = the total cost of an ad campaign ÷ the number of sales made.


You spend $500 on a Google ad campaign in March and you get five sales. Your Cost Per Acquisition is $100.

Return on Adverting Spend


Return on Adverting Spend is one of the simplest marketing metrics to measure the effectiveness of a digital advertising campaign. For every dollar spent in one specific pay-per-click channel, for example, how much did you make in revenue? A widely-held benchmark for Return on Ad Spend is a ratio of 4:1.

How to measure it

Total revenue ÷ advertising spend = return on ad spend


You spend $2,500 on an advertising campaign in July and take $10,000 in revenue during the same period. Your Return on Advertising Spend is 4:1

Conversion Rate


Calculating your conversion rate is a simple but very insightful metric for OTAs which basically indicates the overall effectiveness of your website, app, booking engine and advertising.

How to measure it

Number of sales ÷ number of website visits = conversion rate


Your website or app had 8,000 visits last month. In the same period you made 400 sales. Your conversion rate was 5%.

Average Sale Value


Average Sale Value is the average sum of money customers spend when making a purchase with you.

How to measure it

Total sales revenue ÷ the total number of sales made for a given period = average sale value.


You had a total of $30,000 in sales last month from 30 transactions. Your Average Sale Value was $1,000.

Abandonment rate


Shopping car abandonment rate refers to the percentage of customers who added at least one product to their online cart but did not complete the sales process.

Globally, the average abandonment rate for OTAs is 93.96 percent, so this is something to benchmark your own performance against. Generally, the most complex travel purchases are made on OTA sites, where travelers may be booking a range of travel products, unlike car rental or hotel sites that have lower abandonment rate percentages.

How to measure it

Total number of shopping carts created ÷ total number of completed transactions


You had 100,000 visitors who actively started the purchasing process on your website or app in May but only 7,000 actually completed it. Your abandonment rate was 93%. The look to book ratio is also an important metric to follow.

Customer Lifetime Value


Customer Lifetime Value can be a little tricky to measure and the metric can be calculated with varying degrees of sophistication. In a nutshell it is an attempt to calculate the entire net profit generated by each customer over the whole span of the customer relationship.

How to measure it

(Annual profit from customer – costs to acquire customer) multiplied by length of time served as a customer.


The profit made from the customer is $1,000 each year, the acquisition costs were $2,000. She is expected to be a customer for five years so the Customer Lifetime Value is $1,000 multiplied by 5 – $2,000 = $3,000.

In the face of today’s challenges, some commentators have suggested that OTAs need to take radical action in order to survive. Ideas floated include becoming more like traditional travel agents and even opening call centres and stores; reducing reliance on online advertising and instead investing in TV, radio and billboards; or becoming all-round travel advisors by harnessing the power of artificial intelligence.

Some of these ideas may sound a little extreme but that does not mean they should be discredited out of hand. At the same time, OTAs must not lose sight of what made them popular in the first place: having an intuitive website that is quick and easy to navigate; a one-stop-shop for all travel needs irrespective of the brand; and, last but certainly not least, the best available prices.

  • Mize is an AI-driven Travel-tech startup company that allows travel companies to increase their hotel bookings’ profits by more than 35%, optimizing their purchasing rates post-booking in a fully automated procedure. Mize monitors and processes millions of bookings and billions of US$ value each year.

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