Exhibit 99.1 Operating and Financial Review DÜSSELDORF, GERMANY - February 5, 2025 – trivago N.V. (NASDAQ: TRVG) (the “Company”, “we,” “us,” “our,” or “trivago,”) announced financial results for the fourth quarter ended December 31, 2024. Highlights: Total revenue grew 3% to €94.8 million, with Referral Revenue growing 5% to €93.5 million during the fourth quarter, compared to the same prior year period. This marks a return to revenue growth for the first time since...