Alcatraz Island is a National Historic Landmark you can only reach by official ferry, and tickets sell out weeks in advance during peak season

Alcatraz Island sits 1.25 miles offshore in San Francisco Bay and operates as a National Historic Landmark managed by the National Park Service. You cannot swim there, kayak there, or arrive by private boat — the only legal way to visit is on an official Alcatraz Cruises ferry that departs from Pier 33 in San Francisco. The island itself is open to the public, but access is tightly controlled. Ferries run year-round, though schedules change by season, and tickets often sell out 4 to 6 weeks ahead during summer and holidays.

The island was a federal penitentiary from 1934 to 1963 and held some of the most dangerous inmates in the U.S. prison system, including Al Capone and Robert Stroud. Today the cellhouse, dining hall, and other buildings remain largely as they were left, and you walk through them on a self-guided or ranger-led tour. Most visitors spend 2.5 to 3 hours on the island, though you can stay longer if your ferry schedule allows.

Key Takeaways

  • Tickets are sold only through Alcatraz Cruises at alcatraztickets.com or by phone, and you must book in advance because ferries hold about 1,400 passengers per day.
  • The ferry ride takes about 15 minutes each way, and the island has no food, water, or restrooms beyond what the ferry provides, so bring supplies.
  • A cellhouse audio tour is included with every ticket and runs about 45 minutes; ranger-led tours cost extra and fill up quickly.
  • The island is open daily except Thanksgiving, Christmas, and New Year's Day, but winter weather can cancel ferries without notice.
  • Children under 5 are free, but there are no strollers allowed on the island and the terrain is steep with many stairs.

How to book tickets and what they cost

Alcatraz Cruises is the sole concessionaire authorized to run ferries to the island. You book tickets through their website at alcatraztickets.com or by calling 415-561-4900. Tickets are not sold at the island or at the ferry terminal — you must purchase them in advance online or by phone. Prices vary by season: day tours typically cost between $39 and $41 for adults, $24 to $26 for seniors (62+) and disabled visitors, and $24 to $26 for children (5–11). Children under 5 ride free. Prices are higher during peak season (May through September) and lower in winter.

Ferries depart multiple times daily, usually between 8:45 a.m. and 3:30 p.m., depending on the season. You choose your departure time when you book. The website shows availability in real time, and you can see which dates and times still have open slots. If your preferred date is sold out, the site will suggest nearby dates. Refunds are available up to one day before your tour date; cancellations within 24 hours forfeit the ticket price.

Night tours run on select dates (usually Thursday through Sunday in summer) and cost more — typically $41 to $44 for adults. Night tours depart around 6:30 p.m. and return around 9:45 p.m., and they include a different audio tour focused on the prison's history after dark. Night tours are popular and sell out faster than day tours.

What to bring and what the island provides

The island has no food vendors, no water fountains, and only two small restroom facilities. Bring a full water bottle (or buy one at the ferry terminal), snacks, and any medications you need. The weather in San Francisco Bay is unpredictable — even in summer, the wind can be strong and the temperature can drop 15 degrees from the city. Wear layers and bring a light jacket. Comfortable walking shoes are essential because the island has steep hills, uneven pavement, and many stairs inside the cellhouse.

The ferry terminal at Pier 33 has a small café, gift shop, and restrooms. You can arrive early and eat breakfast there before boarding. Once on the ferry, there is a snack bar that sells sandwiches, drinks, and candy at standard tourist prices. The ferry ride itself takes about 15 minutes each way, and the boat can be crowded and windy — if you are prone to seasickness, take medication before boarding.

Strollers are not allowed on the island, and there is no wheelchair access to the upper cellhouse levels. The National Park Service provides limited wheelchair access to the lower cellhouse and dining hall. If you have mobility concerns, call Alcatraz Cruises ahead of time to discuss what areas you can reach.

The cellhouse audio tour and ranger-led options

Every ticket includes a cellhouse audio tour — a self-guided walk through the prison with a handheld audio device that plays narration as you move through each area. The tour runs about 45 minutes and covers the dining hall, kitchen, library, hospital, and cell blocks. The narration includes historical facts, inmate stories, and details about daily life in the prison. You move at your own pace and can replay sections or skip ahead. The audio tour is available in English, Spanish, French, German, Italian, Japanese, Mandarin, and Korean.

Ranger-led tours are optional and cost an additional $7 to $10 per person. These are 30-minute guided walks led by a National Park Service ranger who answers questions and provides context the audio tour does not cover. Ranger tours fill up quickly and are assigned on a first-come, first-served basis when you arrive at the island. If you want a ranger tour, arrive early and sign up at the tour desk near the ferry dock.

The island also has a small museum and bookstore in the cellhouse. Exhibits explain the prison's history, the inmates held there, and the Native American occupation of the island in 1969–1971. You can spend as much time as you want in the museum — there is no time limit on the island itself, only on the ferry schedule.

Seasonal schedules and weather closures

Alcatraz operates year-round, but ferry schedules change by season. From May through September, ferries run most frequently — often 5 to 7 departures per day. From October through April, ferries run less often, typically 2 to 4 departures per day. The island is closed to visitors on Thanksgiving, Christmas, and New Year's Day. Check the Alcatraz Cruises website for the current schedule before booking.

Winter weather can cancel ferries without notice. High winds, rough seas, or fog can make the crossing unsafe, and the National Park Service will close the island if conditions are dangerous. If your ferry is cancelled, Alcatraz Cruises will reschedule you on the next available date at no extra cost, or refund your ticket. Check the website or call 415-561-4900 the morning of your tour if weather looks questionable.

Summer is the busiest season, and tickets often sell out 4 to 6 weeks in advance. If you are flexible, visiting in fall or winter means shorter lines, easier ticket availability, and fewer crowds on the island — though the weather is less predictable and some ferries may be cancelled.

What to expect on the island and how long to stay

When you arrive at the island, a ranger gives a brief orientation and you begin the audio tour. Most visitors spend 2.5 to 3 hours on the island, though you can stay longer if your ferry return time allows. The cellhouse audio tour takes 45 minutes, and browsing the museum and exploring the grounds takes another 1 to 2 hours. If you take a ranger tour, add 30 minutes. There is a bench area outside the cellhouse where you can sit and look at the bay, and many visitors spend time there before heading back to the ferry.

The island is hilly and the cellhouse has multiple levels connected by stairs. The audio tour route is not a loop — you go up, through, and back down, so you will retrace some steps. If you have limited mobility or tire easily, plan for a slower pace and consider skipping the upper levels or taking a ranger tour to learn about areas you cannot reach.

The last ferry back to San Francisco departs the island in the late afternoon or early evening, depending on the season. Your ticket specifies your return ferry time. If you miss it, there is no other way off the island — the next ferry may not run until the next day. Arrive back at the dock at least 10 minutes before your scheduled departure.

Accessibility and restrictions

The National Park Service provides limited wheelchair access to the lower cellhouse, dining hall, and kitchen. The upper cellhouse and cell blocks are not wheelchair accessible. If you use a wheelchair or have mobility concerns, call Alcatraz Cruises at 415-561-4900 before booking to discuss which areas you can visit. Service animals are allowed on the island, but pets are not.

Photography is allowed throughout the island and cellhouse. Tripods and professional camera equipment require a permit from the National Park Service. Smoking, alcohol, and illegal drugs are prohibited on the island. Backpacks and large bags are allowed, but they will be searched at the ferry terminal for security reasons.

The island is a working archaeological site and a National Historic Landmark. You cannot remove anything from the island — not rocks, shells, or artifacts. Stay on marked paths and do not enter closed buildings or areas marked off by rope or signs.

Frequently Asked Questions

Can I visit Alcatraz without a tour company?

No. Alcatraz Cruises holds the exclusive contract to run ferries to the island, and there is no other legal way to reach it. Private boats, kayaks, and swimming are not permitted. You must book through Alcatraz Cruises.

What if I get seasick on the ferry?

Take seasickness medication 30 minutes before boarding. The ferry ride is 15 minutes each way, and the bay is usually calmer in the morning. If you are very prone to seasickness, book an early departure when the water is typically calmer, or consider visiting on a day with lighter winds.

Can I bring my own food and drinks to the island?

Yes. You can bring snacks, sandwiches, and a water bottle. There are no food vendors on the island, so bringing your own is a good idea. The ferry has a snack bar, but prices are high and selection is limited.

Is there a time limit for how long I can stay on the island?

No time limit exists on the island itself — you can stay as long as you want. Your ticket specifies your return ferry time, and you must be back at the dock before that ferry departs. If you want more time, book a later return ferry when you purchase your ticket.

What happens if the ferry is cancelled due to weather?

Alcatraz Cruises will reschedule you on the next available date at no extra cost, or refund your ticket. Check the website or call 415-561-4900 the morning of your tour if weather looks bad. Winter ferries are cancelled more often than summer ones.