Dublin: Dublin Bay Cruise from Dun Laoghaire to Howth

Dublin Bay opens up beautifully from the deck of the St Bridget, with Dublin’s coastline, islands, and lighthouses laid out from a viewpoint you cannot get from the road or DART. The one-way sailing takes about an hour and finishes at Howth, where seals often swim near the harbor.

I like two things especially: the chance to turn a simple trip between two coastal towns into a scenic outing, and the freedom to move between a covered lower deck and the open upper deck. The main catch is the weather. Wind and rain can make the upper deck cold, and the audio commentary may be difficult to hear downstairs.

Key things to know before sailing

• The St Bridget crosses Dublin Bay in about 60 to 70 minutes, making this a useful outing as well as a sightseeing trip.
• You’ll see Dalkey Island, Ireland’s Eye, Lambay Island, Bull Island, the Baily Lighthouse, and Joyce’s Martello Tower from the water.
• Howth Harbor is the payoff, with seals often visible near the boats and plenty of places for food and coastal walks.
• The trip is one way, so plan to return by DART or book a return ferry when boarding.
• The upper deck offers the best views and photos, but the lower deck gives you shelter when the weather turns.
• Children under three travel free, and the sailing suits all ages.

Why a one-way cruise makes sense in Dublin Bay

This is not a long sightseeing voyage with hours of narration. It is a practical 60 to 70-minute crossing between Dun Laoghaire and Howth, with enough scenery to make the journey feel like part of the day rather than a transfer.

That one-way format works well because Dun Laoghaire and Howth make natural bookends. You can begin with a walk along Dun Laoghaire’s piers, board at the East Pier, then finish in Howth for harbor views, seafood, and coastal paths. At the end of the day, the DART gives you a straightforward way back, and a discounted DART voucher is included after sailing.

The cruise also gives you a break from Dublin’s streets. From the water, the city feels less crowded and more open. You see the curve of Dublin Bay, the Dublin Mountains behind the coast, and small islands that are easy to miss from land.

Boarding at Dun Laoghaire’s East Pier

The departure point is on the East Pier in Dun Laoghaire, just before the Bandstand. This is a pleasant place to arrive early, especially if you want a short walk beside the water before boarding.

The boat is the St Bridget. You can expect indoor seating on the lower deck and access to an upper deck for clearer views and photographs. Bring a jacket even on a bright day. The wind over the bay can feel much cooler than it does on the pier.

If you want the best chance of seeing the scenery, head upstairs when conditions are comfortable. The upper deck is the better choice for the Baily Lighthouse, islands, boats, and harbor approach. If rain arrives, the lower deck lets you stay dry while still looking out through the windows.

One practical point matters here: the sailing is one way. You are not being dropped back at Dun Laoghaire after the cruise. The crossing finishes at Howth’s West Pier, so plan the rest of your day around Howth or use the DART to return.

The first views across Dublin Bay

As the St Bridget leaves Dun Laoghaire, the bay opens behind you. The town and pier become part of a wider coastal view, while the Dublin Mountains provide a strong backdrop inland.

This is one of the best reasons to take the boat instead of simply riding the train. The DART is convenient, but it keeps you close to the shore. From the water, you get a broader view of the coast and can see how Dun Laoghaire, Dalkey, and Howth fit together.

The boat passes several well-known points, including Dalkey Island and Joyce’s Martello Tower. The tower connects the view with Dublin’s literary identity, while Dalkey Island adds a more rugged note to the bay. You may also see sailing boats scattered across the water, particularly on a calm, sunny day.

The exact feel of the crossing depends heavily on conditions. Calm water can make the ride smooth and easy. Wind may produce a noticeable bump, which is simply part of taking a small boat across an open bay. If you are prone to seasickness, sitting lower and facing forward may be more comfortable, though that position gives you less direct access to the views.

Islands, wildlife, and the open-water crossing

The route brings several islands and coastal features into view. Ireland’s Eye and Lambay Island help give the trip a sense of distance, while Bull Island and its wildlife reserve show another side of Dublin Bay.

You should not treat the wildlife as guaranteed. Seals are commonly seen around Howth Harbor, and one sailing also produced a dolphin sighting, but animals move on their own schedule. The value is in having a chance to look closely at the water and harbor edges rather than being promised a wildlife show.

The trip can also deliver small surprises. A Portuguese man o’ war jellyfish was spotted during one outing. That is not a regular feature to expect, but it shows how much you can notice when you are watching the water instead of rushing from one attraction to the next.

The views are the main event. The route includes the Baily Lighthouse, a striking coastal marker near Howth, as well as Bull Island, the islands, and the mountain-backed shore. Have your camera ready, but do not spend the full hour looking through a screen. The best sense of the bay comes from watching the coastline shift as the boat moves.

The St Bridget and the onboard commentary

The boat provides an audio guide and onboard stories about the places along the route. Commentary can add useful context, especially when you are passing a tower, lighthouse, or island that might otherwise be hard to identify.

The sound is not perfect in every part of the boat. Downstairs, the audio may be hard to hear, particularly when other passengers are talking or when the boat is moving through rougher water. If the commentary matters to you, sit where you can hear the speakers clearly, or choose the upper deck when weather allows.

The crew is an important part of the experience. Staff are described as friendly and helpful, and Eugene received particular praise for assisting passengers and recommending The Brass Monkey in Howth for chowder. That kind of local tip is useful once you arrive, since the cruise gives you only the crossing and does not include a meal or guided visit around Howth.

The mood is relaxed rather than formal. You are taking a short public-style ferry cruise, not joining an elaborate lecture. That suits families, couples, and anyone who wants scenery without a long commitment.

Arriving at Howth Harbor

The approach to Howth is one of the strongest parts of the trip. The harbor, fishing boats, and headland come into view as the St Bridget moves toward the West Pier.

Keep watch near the harbor for seals. They often swim close to the boats, and you may get a clear look as the ferry arrives. This is one of those simple moments that makes the water crossing feel different from a standard train ride.

Howth itself is a good place to spend the rest of the day. The town is known for its fish restaurants and coastal walks, so you can step off the boat and continue on foot. If you only have time for a short visit, stay near the harbor for the boats, seals, and food. If you have longer, the area offers walking routes with views over the coast.

The ferry does not include a guided walk in Howth. That is helpful if you want flexibility, but you need to plan your own time after arrival. The boat gets you there; what you do next is up to you.

What the $32 price really gives you

At $32 per person, this is not the cheapest way to move between Dun Laoghaire and Howth. The value comes from combining transport with a scenic hour on the bay.

A simple DART ride is more practical if you only need to get from one town to the other. The ferry earns its price when you want the journey itself to be part of your Dublin plans. You are paying for the views, the open-water setting, the chance of seeing seals, and a different view of the city and coast.

The included discounted DART voucher improves the value for anyone planning to return by train. You can sail one way, spend time in Howth, and then use the DART rather than paying for a return ferry. A return ferry can also be booked when boarding, but the supplied details do not give a separate return fare.

For me, the best comparison is not ferry versus train alone. It is ferry versus a separate coastal sightseeing activity. The cruise gives you a transfer and a compact sightseeing experience in one, which can work well during a short Dublin visit.

Weather, comfort, and practical tips

Dublin Bay weather can change quickly. You might begin in light rain, sit below for part of the trip, then find the sky clearing as Howth comes closer. One such sailing changed from wind and drizzle to sunshine, allowing passengers to move upstairs for the approach.

Wear comfortable clothes and shoes. A jacket is more important than dressy clothing, even if the forecast looks kind. The upper deck is exposed, and the wind can be sharp.

The boat has covered seating, so poor weather does not automatically ruin the trip. Still, the experience is more scenic when you can spend time outside. If it is wet or cold, accept that you may see less and hear less of the commentary from downstairs.

The crossing can be a little bumpy. It is still described as safe and smooth on calmer days, but this is a boat on open water, not a stationary harbor ride. Families with children can join, and children under three travel free. Dogs have also been welcomed on board, with one dog named Murphy becoming a popular fellow passenger, though you should confirm current pet arrangements when booking.

The activity is suitable for all ages. It is especially easy for people who want a scenic outing without committing to a long walking tour. You can sit, watch the coast, and decide how active you want to be after reaching Howth.

Who should book the Dublin Bay cruise

I would recommend this to you if you want to see Dublin from the water, enjoy coastal scenery, or plan to spend time in both Dun Laoghaire and Howth. It is also a good choice for families, older visitors, and anyone who likes the idea of a sightseeing trip without a packed schedule.

It is a particularly smart pick on a reasonably calm day when you can use the upper deck. The views of the Baily Lighthouse, islands, boats, and harbor are much easier to appreciate outside.

I would think twice if your day is tightly timed or if you dislike wind and boat movement. The audio commentary may not be clear from every seat, and bad weather can limit the best part of the experience. If your only goal is reaching Howth quickly, take the DART instead.

Should you book it?

Book the Dublin Bay Cruise if you see the crossing as a scenic part of your day, not just a ride between two stations. The combination of open-water views, a one-way trip to Howth, and the chance to see seals gives it real value, especially when followed by lunch or a walk around the harbor.

Choose a sunny or calm-weather departure if you can. Arrive ready for wind, keep a jacket close, and use the DART voucher for your return. For a modest outing with strong coastal views and little planning once you are aboard, this is a worthwhile addition to a Dublin itinerary.

FAQ

Where does the Dublin Bay cruise depart?

The cruise departs from the East Pier in Dun Laoghaire, just before the Bandstand.

Where does the cruise finish?

The sailing finishes at Howth’s West Pier.

How long is the boat trip?

The crossing takes about 60 to 70 minutes. The activity is generally described as lasting one hour, and you should check the available departure time when booking.

Is the ferry ticket one way?

Yes. The included ticket is for a one-way ferry trip from Dun Laoghaire to Howth.

How can I return to Dun Laoghaire?

You can return by DART using the discounted DART voucher provided after sailing. A return ferry may also be booked when boarding.

What can I see from the boat?

The route offers views of the Dublin Mountains, Ireland’s Eye, Lambay Island, Dalkey Island, Joyce’s Martello Tower, the Baily Lighthouse, and Bull Island. You may also see seals near Howth Harbor.

Can children join the cruise?

Yes. The trip is suitable for all ages, and children under three can join for free.

What should I wear?

Wear comfortable clothes and comfortable shoes. A jacket is wise because it can be cold and windy on the water.

Can I cancel the booking?

You can cancel up to 24 hours before the activity for a full refund. You can also reserve your place and pay later, subject to the booking conditions.