May 16-18: UP Express Service Adjustments Started Thu Apr 23 Until Sat Apr 25 On Saturday, May 16, Sunday, May 17 and Monday, May 18, planned construction is taking place on UP Express for the future Woodbine GO and St. Clair–Old Weston Station. There will be no UP Express train service. GO buses replace trains, Pearson Airport Terminal 1 and Union Station Bus Terminal . Estimated travel time is between 30 and 50 minutes. GO buses will not stop at Bloor, Mount Dennis or Weston stations. Service changes begin late-evening Friday, May 15. Learn more about this temporary service adjustment.