Study Finds Booking.com Dominates 62.57% of Travel Ads in ChatGPT's U.S. Prompts, Offering Single Sponsored Line
📊 On July 23, 2026, SE Ranking ran 50,006 US commercial prompts through ChatGPT across 20 categories, revealing that ads appeared in about 25% of cases. In the travel category, Booking.com dominated 62.57% of the ads. All ads appeared as a single sponsored offer below the response, without competition, unlike Google's multi-ad setup. On August 31, OpenAI enabled self-service ad buying in Europe. Ad presence was thin, appearing in roughly 1 out of 7 travel prompts.
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