Southern operates a train from Chichester to Southampton hourly. Tickets cost $21 - $35 and the journey takes 54 min. Alternatively, National Express operates a bus from Chichester to Southampton every 4 hours. Tickets cost $8 - $12 and the journey takes 1 h 15 min.
From Chichester train to Southampton Central. 54 min £18. From Chichester, Bus Station bus to Southampton City Centre, Coach Station. 1 h 15 min £8. From Chichester, Cathedral (Tower Street) bus to Guildhall, City Centre South then bus to Southampton City Centre, WestQuay. 2 h 55 min £8. From Chichester taxi to Southampton. 36 min £79. From Chichester drive to Southampton. 36 min £5.