Getting from Cape Cod to Nantucket requires navigating two main ferry lines operating out of Hyannis: the Steamship Authority and Hy-Line Cruises. Both companies run passenger-only high-speed vessels that cross Nantucket Sound in roughly one hour, while the Steamship Authority also operates traditional slow ferries for vehicles and walk-on passengers. Choosing the right option depends on your vehicle needs, budget, and resistance to choppy water.
The Steamship Authority operates from the pier at 69 South Street in Hyannis, offering year-round high-speed passenger service on the M/V Iyanough alongside traditional freight and car ferries. Hy-Line Cruises operates out of Ocean Street Docks nearby, running high-speed catamarans seasonally and year-round depending on the calendar. Knowing where your terminal is located saves you from a frantic walk across the harbor lot with heavy bags.
Ferry Options and Crossing Times
The primary choice between operators comes down to vessel speed, amenities, and whether you need to bring a car to the island.
- High-Speed Passenger Ferries: Both Hy-Line and the Steamship Authority run high-speed catamarans that take about 60 minutes. These are passenger-only vessels with indoor and outdoor seating, snack bars selling beer and wine, and restrooms. They cost around $93 to $97 round-trip for adults.
- Traditional Car and Passenger Ferries: Operated exclusively by the Steamship Authority, these larger vessels take about two hours and fifteen minutes. They feature vehicle decks, multiple passenger lounges, and outside decks. Round-trip adult passenger tickets cost significantly less—around $43—making them ideal for budget-conscious travelers who don't mind a slower cruise.
- Vehicle Transport: Bringing a car requires booking months in advance through the Steamship Authority, as vehicle slots for the summer season sell out almost instantly when reservations open in January.
Parking Strategies in Hyannis
Leaving your car on the mainland is standard practice since taking a vehicle to Nantucket is expensive and parking on the island is heavily restricted for non-residents. Both ferry lines maintain primary lots near their docks alongside remote off-site lots serviced by free shuttle buses.
Rates at on-site lots near the docks hover around $30 per calendar day during peak summer months. These lots fill up early in the morning, especially on Fridays and Sundays. If you arrive past 9:00 AM in July or August, expect parking attendants to redirect you to off-site locations such as the Steamship Authority's Yarmouth Road lot.
When parking off-site, budget an extra 30 to 45 minutes. You will need to park your car, unload your luggage onto the shuttle bus, ride to the terminal, and walk to the boarding gate. Free shuttle buses run continuously, but heavy summer traffic along Route 28 can cause delays.
Booking, Luggage, and Boarding Rules
Securing tickets online ahead of time protects you from getting bumped off a sold-out weekend sailing. High-speed vessels have strict seating capacities, and morning departures during peak summer weekends often fill days in advance.
- Arrival Time: Walk-on passengers should arrive at the terminal at least 30 to 45 minutes before departure. If you are parking off-site, aim to arrive an hour early.
- Luggage Handling: Both terminals provide luggage rolling carts. For high-speed ferries, you typically roll your large bags to the designated luggage drop area near the gangway, where deckhands load them onto racks inside the vessel hull. You carry small backpacks and carry-ons with you.
- Seasickness Prevention: Nantucket Sound can get choppy when strong southwest winds kick up against the tide. If you are prone to motion sickness, grab a seat in the middle of the lower cabin facing forward, or stay out on the open deck where you can watch the horizon. Taking medication an hour before boarding helps if water conditions look rough.
Frequently Asked Questions
Can I bring my bicycle on the ferry?
Yes, both ferry lines allow bicycles for a nominal fee—typically around $17 round-trip. You must wheel your bike down to the loading ramp where crew members stow it securely in a designated rack.
What happens if I miss my scheduled ferry?
High-speed ferry tickets are generally non-transferable to other companies and tied to specific departure times. If you miss your sailing, go directly to the ticket window to see if standby seating is available on the next departure, though you may have to pay a change fee or buy a new ticket if the vessels are full.
Are pets allowed on the boats?
Cats and dogs are permitted on both Hy-Line and Steamship Authority vessels as long as they are leashed or kept inside a secure pet carrier. Pets are not allowed on the indoor upholstered seats, so bring a small mat or blanket if your dog needs to lie down on the deck floor.
Is it possible to do a day trip to Nantucket from Hyannis?
A day trip is entirely feasible using the high-speed ferry. Catching an 8:15 AM departure gets you onto the island by 9:15 AM, giving you a full day to explore downtown, rent a bike to visit Milestone Bog or Sconset, and catch a late afternoon boat back to the mainland.
