Looking for travel information about Castaic? Explore the best travel advice on Castaic, United States. This city is located in the close proximity of a major city Santa Barbara, United States. Add Santa Barbara to your vacation plan, it has an interesting bunch of activities to do on your visit like Universal Studios, Santa Monica Pier, The Griffith Observatory. If you want to fly to the destination, you can choose the nearest major airport to take a flight. The nearest major airport is Santa Barbara Airport. 1-2 days is an ideal duration of visit to Castaic.