Sydney Trains operates a train from Sydney to Double Bay every 10 minutes. Tickets cost $2 - $3 and the journey takes 5 min. Alternatively, Transport NSW operates a bus from Sydney to Double Bay every 20 minutes. Tickets cost $1 - $3 and the journey takes 17 min. NightRide NSW also services this route 4 times a day.
From Martin Place Station train to Edgecliff Station. 5 min $3. From William St At Palmer St bus to New South Head Rd At Knox St. 17 min $3. From Circular Quay, Wharf 4 ferry to Double Bay Wharf. 17 min $5. From Sydney taxi to Double Bay. 6 min $22. From Sydney Uber to Double Bay. 6 min $25. From Sydney walk to Double Bay. 53 min.