Mount Baker station is part of Sound Transit's Line 1, which runs from Seattle-Tacoma International Airport through the Rainier Valley and Downtown Seattle to the University of Washington. It is the seventh northbound station from Angle Lake station and tenth southbound station from University of Washington station, and is situated between Columbia City and Beacon Hill stations. Line 1 trains serve Mount Baker twenty hours a day on weekdays and Saturdays, from 5:00 am to 1:00 am, and eighteen hours on Sundays, from 6:00 am to 12:00 am; during regular weekday service, trains operate roughly every six to ten minutes during rush hour and midday operation, respectively, with longer headways of fifteen minutes in the early morning and twenty minutes at night. During weekends, Line 1 trains arrive at Mount Baker station every ten minutes during midday hours and every fifteen minutes during mornings and evenings. The station is approximately 22 minutes from SeaTac/Airport station and 16 minutes from Westlake station in Downtown Seattle. In 2019, an average of 2,601 passengers boarded Link trains at Mount Baker station on weekdays.