Flight, hotel, and car rental metasearch engine owned by Booking Holdings. US and European market leader in metasearch.
KAYAK search data shows flight demand to Kansas City is up 136% year-over-year ahead of the 2026 FIFA World Cup, with hotel rates in secondary host cities like Kansas City (+115%) and Philadelphia (+70%) seeing the steepest increases.
Booking Holdings grew room nights 6% and revenue 16% in Q1 2026, though the Middle East conflict clipped an estimated two percentage points off growth. Adjusted EBITDA rose 19% to $1.3 billion.
KAYAK launched Ask AI, a conversational travel search tool that updates live flight, hotel, and car results in real time alongside a chat interface, marking a first in travel metasearch.
Kayak's AI Mode, launched in October 2025, is the clearest signal yet of how intent-driven queries are rewriting metasearch — and it lands as the company prepares for life after Steve Hafner.