News and Research

2023 Big Book of Travel Data Reveals $1.28 Trillion in Revenue from Airlines, Hotels, Car Rentals & OTAs – Press Release

August 15, 2023

Allianz Partners, a global leader in travel protection and consumer specialty insurance, and IdeaWorksCompany, the foremost consultant on ancillary revenue, have released the second edition of The Allianz Partners Big Book of Travel Data by IdeaWorksCompany.  The 2023 publication, which expands on last year’s edition, provides a world of industry data for airlines, hotel groups, car rental companies, and online travel agencies (OTAs), and is collated by alphabetical order, size, region, and more. The 120-page “Big Book” is available free of charge via download at and The compilation of data allows for interesting comparisons; here is the list of revenue leaders in each category in 2022:

• OTAs: $121.3 billion: Booking Holdings (gross bookings). The company operates Agoda,, Kayak, Priceline, and websites.
• Hotel groups: $61.4 billion: Marriott International (estimated room revenue).
• Airlines: $49 billion: American Airlines (company revenue).
• Car rental: $30 billion: Enterprise Holdings (company revenue). The company operates the Alamo, Enterprise, and National brands.

The 120-page “Big Book” is available via download at

Click here to download JPG graphic file of  the “Travel Data Comparison of Top 10 Results” table found on page 12 of the Big Book.

The Big Book of Travel Data is now available for sale in the store.

Scroll to Top