How Many Days Until Mlb Opening Day 2025 Dates. Opening day marks the beginning of the season for major league baseball, one of the most important days of the year for all fans of. Mlb opening day in 2025 is march 27.

Mlb opening day in 2025 is march 27. The official start date for the 2025 mlb season is march 18, 2025 , as the dodgers will face the chicago cubs.