From Pearson Airport Terminal 1 line 34 bus to Yonge St At Sheppard Ave West, line 320 bus to Toronto, ON, then bus to Grimsby, ON. 2 h 32 min $27. From UP Express Pearson Airport train to Toronto then train to Grimsby. 2 h 39 min $74. From Toronto Airport (YYZ) taxi to Grimsby. 1 h $206. From Toronto Airport (YYZ) drive to Grimsby. 1 h $11.