National Express operates a bus from Cambridge to Southwold every 3 hours. Tickets cost $9 - $14 and the journey takes 1 h 55 min. 2 other operators also service this route. Alternatively, Greater Anglia operates a train from Cambridge to Southwold hourly. Tickets cost $26 - $40 and the journey takes 1 h 14 min. 2 other operators also service this route.
From Cambridge, Parkside (Parker's Piece) bus to Norwich City Centre, St Stephens Street then bus to Southwold, North Green. 3 h 41 min £19. From Cambridge train to Ipswich, train to Halesworth, Railway Station, then bus to Southwold, Kings Head. 3 h 55 min £40. From Cambridge drive to Southwold. 1 h 37 min £15. From Cambridge Uber to Southwold. 1 h 37 min £163.