Other highlights include: - The top 11 performers consist of online travel agencies, aggregators or integrated review and booking sites. These sites own 86% of the entire market. - An actual airline doesn’t appear until position 11, and only owns 0.6% of the category (Southwest). - By 2019 it is estimated that 69% of travel bookers will use a digital device to book a trip. Get the full story at Pi Datametrics