A new Monday to Saturday timetable will be introduced for the 508 bus route between Halifax and Leeds.
West Yorkshire Metro say the new timetable will help improve service punctuality and reliability.
The changes come into effect as of Sunday, October 26.
A new Monday to Saturday timetable will also be introduced for the 681 and 682 services between Bradford and Halifax to co-ordinate with the revised 508 service.
The 560 service between Halifax and Commons will also be changed, with Sunday journeys at 5.20pm from Halifax to Commons and 5.49pm journeys from Commons to Halifax to be re-timed to depart and operate five minutes later.