From the center of San Sebastian (Oquendo street), take the bus A2 (a red lined one) to Pasajes. Then, walk along the harbour to a platform where a small bark will make you cross the river (0.50 Euros per person).
- Budget Travel
You can go from the west side of the bay to the east side on a very pretty boat, spending 30 seconds. If you go by car, you will spend 20 minutes for the same trip.