Exhibit 99.1 Trip.com Group Limited Reports Unaudited Third Quarter of 2025 Financial Results SINGAPORE, November 17, 2025 — Trip.com Group Limited (Nasdaq: TCOM; HKEX: 9961) ("Trip.com Group" or the "Company"), a leading global one-stop travel service provider of accommodation reservation, transportation ticketing, packaged tours, and corporate travel management, today announced its unaudited financial results for the third quarter of 2025. Key Highlights for the Third Quarter of 2025 • International busin ...