Introduction: Why choose an island near Helsinki for a day trip
Helsinki is a maritime capital: more than 300 islands dot its bay and archipelago, offering beaches, forests, historic fortresses, open-air museums, restaurants and saunas. In a single day you can pack in several micro-adventures: a dip in clear, cool water, a walk among century-old pines, a visit to a UNESCO-listed fortress, or a seafood lunch with sea views. The islands around Helsinki are reachable by a mix of HSL public ferries, private shuttle boats and, for some, bridges and trams. They suit busy travelers, families with kids, couples after a romantic outing and history or nature lovers alike.
This guide presents a top 10 of islands not to miss for a one-day getaway from central Helsinki. Each section covers: how to get there, the exact address or main embarkation point, key times, prices in euros (tickets, entry, services), an immersive description of the place and practical local tips (where to eat, what shoes to wear, best times to visit). The info is meant to help you plan a full day with morning, lunch and sunset return options. Timetables and prices can vary by season; check official sites before you go.
To give you an instant feel for each spot, I’ve added image markers at particularly visual points: sandy beaches, granite fortresses, waterfront cafés, wooded trails and colorful facades. Those image cues will help you picture the route and pick the islands that match your mood for the day.
One general tip: always pack a windproof jacket and a beach towel, even in summer, and bring water and snacks if you plan to explore less serviced islands. Helsinki has excellent transport links; combining several islands in one day is often possible if you plan ferry crossings and timetables in advance.
1. Suomenlinna – Seafortress, history and granite walks
Address: Suomenlinna C 1, 00190 Helsinki. Main embarkation point: Kauppatori (Market Square), Eteläranta, 00170 Helsinki.
How to get there: HSL ferry (line 4) from Kauppatori – Eteläranta. The trip takes about 15–20 minutes. Frequency: every 20–30 minutes in high season.
Price: HSL adult zone AB ticket: €3.50 (single); HSL card valid; the ferry to Suomenlinna is part of the HSL network. Island entry: free (museums and exhibitions may charge).
Useful hours: Ferries usually run from 05:30 to 23:30 (times vary by season). Museums (e.g. Suomenlinna Museum): roughly 11:00–17:00 in summer; check opening days.
Description: Suomenlinna is Helsinki’s iconic fortress, built in the 18th century across six connected islands. Granite ramparts, casemates and bastions create a time-travel atmosphere. Stroll along the quays, explore tunnels and enjoy panoramic views over the Baltic Sea and Helsinki’s skyline. The island has cafés and restaurants like Café Piper and Suomenlinna Brewery & Restaurant where you can grab snacks and local beers.
Highlights: views from the King’s Gate bastion, the museums (Suomenlinna Museum, Ehrensvärd Museum), rotating exhibitions and sheltered beaches for a quick summer swim. Families will like the open lawns for picnics.
- Local tip: Arrive early (around 09:00) to avoid tour groups and catch soft morning light for photos. Wear comfortable shoes: the terrain is uneven granite.
- Where to eat: Suomenlinna Brewery & Restaurant, Suomenlinna C 1, 00190 Helsinki. Average main course: €15–25.
2. Vallisaari – Wild nature and coastal hikes
Address: Vallisaari, 00190 Helsinki. Main dock: ferry from Suomenlinna or Kauppatori.
How to get there: Seasonal shuttles from Kauppatori, Eteläranta or a short connection from Suomenlinna (10–15 minute transfer). Approximate travel time: 20–30 minutes from the center.
Price: Round-trip shuttle by private operator: around €9.00–12.00 depending on the company. Island entry: free.
Hours: Seasonal ferries usually run May–September, 09:30–18:00 (times depend on operator). The island is open all day for hiking.
Description: Vallisaari is a preserved island turned nature park, known for pine forests, wild meadows and dramatic sea views. Once a military zone, it now features marked trails, observation points and information panels on local flora and fauna. It’s ideal for nature lovers, photographers and anyone wanting a direct encounter with Finland’s marine environment.
Highlights: coastal hikes, birdwatching, sheltered coves for resting, shaded picnic spots. The island is quieter than Suomenlinna, offering a more wild and peaceful feel.
- Local tip: Bring binoculars for birdwatching and sturdy closed shoes for the trails. The coast can be slippery after rain.
- Where to eat: There’s no large canteen on the island — pack a picnic or return to Suomenlinna for lunch.
3. Lonna – Small trendy islet with café and sauna
Address: Lonna, 00160 Helsinki. Embarkation point: Kauppatori (Eteläranta) or the Suomenlinna ferry stop.
How to get there: Boat: direct shuttle from Kauppatori or a short transfer from Suomenlinna (5–10 minutes). Total travel: 10–25 minutes depending on connection.
Price: Return shuttle: about €6.00–9.00. Café and restaurant prices: coffee €3.50–5.00; mains €12.00–28.00. Lonna sauna: general sessions €20.00–35.00 depending on time and season.
Hours: Café and restaurant usually open 10:00–20:00 in summer. Sauna sessions in the afternoon/evening, often by reservation (e.g. 16:00–21:00).
Description: Lonna has been transformed into a cozy, popular stop for coffee, a terrace lunch or a truly maritime sauna experience. The tiny island is carefully arranged: a terrace overlooking the harbor, warmed stones and driftwood décor. Lonna’s sauna is often praised as an authentic Finnish experience with sea views.
- Local tip: Book the sauna in advance during high season. On sunny days, arrive in the late afternoon for a swim followed by a sauna and an aperitif on the terrace.
- Where to eat: Lonna Café & Restaurant, Lonna, 00160 Helsinki. Reservations recommended for dinner.
4. Seurasaari – Open-air museum and traditional Finnish atmosphere
Address: Seurasaari Island Open-Air Museum, Seurasaarentie 20, 00250 Helsinki.
How to get there: City bus from central Helsinki (line 24 or others depending on season), stop Seurasaari. Walking or cycling from Töölö: about 20–30 minutes.
Price: The park is free; some houses and exhibitions may charge €3.00–7.00 depending on the display. Exhibition hours: typically 10:00–17:00 in summer.
Hours: The park is accessible year-round; houses and exhibitions run seasonally (mostly April–October).
Description: Seurasaari is an open-air museum dedicated to Finnish rural architecture: cottages, barns, wooden churches and a variety of traditional buildings moved and reconstructed here. Paths wind through Nordic vegetation and along the coast, offering charming viewpoints and picnic spots. The island often hosts craft demonstrations and cultural events, especially on summer Sundays.
- Local tip: Combine the visit with a walk to the small beaches and bring a picnic. In summer, don’t miss craft demos and the chance to taste local specialties during events.
- Where to eat: Café Seurasaari (in the park seasonally): drinks €3–6, snacks €4–10.
5. Pihlajasaari – Sandy beaches and popular swims
Address: Pihlajasaari, 00180 Helsinki. Main summer dock: Hietalahti Harbour, Hietalahdenranta 11, 00180 Helsinki.
How to get there: Seasonal boat from Hietalahti Harbour (Helsinki). The trip takes 10–15 minutes.
Price: Return shuttle: €8.00 per adult (seasonal rate). Kayak/stand-up paddle rentals on site: €10.00–25.00 depending on duration.
Hours: Summer shuttle: usually 10:00–18:00 with multiple rotations. The beach is open all day.
Description: Pihlajasaari is the most popular beach island reachable by boat from the center. Two sandy bays provide protected swimming spots, barbecue areas, seasonal cafés and separate nudist zones (check signage). Families appreciate the easy access, public toilets and small freshwater showers.
- Local tip: Bring sunscreen and shade (few trees on the beaches). Take an early morning shuttle to avoid afternoon queues. Check barbecue rules and seasonal restrictions.
- Where to eat: Food kiosk at Pihlajasaari: snacks €4–12, drinks €2–5.
6. Uunisaari – Easy relaxation and panoramic views
Address: Uunisaari, 00100 Helsinki. Access point: walks from Kaivopuisto (Kaivopuistonranta), or small private boats from Merisatama.
How to get there: Short private boat transfers from Kaivopuisto / Merisatama or a walk from Kaivopuisto via piers/bridges depending on tide. Organized transits sometimes depart from Kaivopuisto.
Price: Most access is free. If you take an organized cruise: €10.00–20.00 for a short trip. Restaurant and sauna (if available): mains €15–30, sauna €15–30.
Hours: The island is open all day; local restaurants generally run 11:00–20:00 in summer.
Description: Uunisaari is a small island close to the center known for panoramic vistas and a relaxed feel. It’s a nice spot for a quiet break, sunbathing and a quick swim. Photographers also love it for sunset shots over the bay.
- Local tip: Pair Uunisaari with Kaivopuisto for a relaxed morning and a waterfront lunch. Bring a towel and beach shoes: shoreline access can be rocky.
- Where to eat: Uunisaari Restaurant (or seasonal kiosk): mains €12–28.
7. Isosaari – Historic island and calm beaches (guided visits)
Address: Isosaari, 00160 Helsinki (former military site). Dock: Merisatama / Suomenlinna depending on the tour operator.
How to get there: Organized boat tours from Merisatama or Suomenlinna. The island isn’t permanently served by public ferries; access is mainly via excursions.
Price: Guided return excursions: around €25.00–35.00 per adult (day-trip rate). Some tours include lunch or special entry, raising the price to €40–60.
Hours: Tours run mainly on weekends and during high season, usually departing in the morning and returning late afternoon.
Description: A former military base, Isosaari stands out with bunkers, casemates and large coastal esplanades. Guided tours cover the military history and the island’s transformation into a leisure space. You’ll also find charming beaches and meadows to relax away from the crowds.
- Local tip: Book the tour in advance. Guides often share juicy historical anecdotes, and the island is perfect for those who want history and nature together.
- Where to eat: Meals are often included in the tour; otherwise bring a picnic.
8. Harakka – Nature centre and birdwatching
Address: Harakka Nature Centre, Kruununhakankuja 1, 00160 Helsinki (Harakka dock, accessible from Kaivopuisto).
How to get there: Boat from Kaivopuisto (courtyard near Merisatama). Trip: 5–10 minutes.
Price: Round-trip shuttle: €4.00–7.00 depending on season. Entrance to the nature centre: free; some exhibitions may charge €2–6.
Hours: Harakka Nature Centre is generally open 10:00–17:00 during the high season (May–Sept.). The trail and island are accessible all day.
Description: Harakka is devoted to environmental education and the protection of migratory birds. The centre features exhibitions on marine life and local birds; hides and trails let you watch species discreetly. It’s a great spot for families and birding enthusiasts.
- Local tip: Bring binoculars and a windproof jacket: the viewing hides are exposed. Check the schedule of children’s workshops if you’re traveling with family.
- Where to eat: Small café at the nature centre (sandwiches €4–9, drinks €2–5).
9. Korkeasaari – City zoo, family fun and animal encounters
Address: Korkeasaari Zoo, Mustikkamaa-Korkeasaari, Mustikkamaanpolku 12, 00560 Helsinki.
How to get there: Ferry from Kauppatori (some seasonal departures) or bus/tram followed by a short bridge walk (Mustikkamaa link). Travel time from the center: 15–25 minutes.
Price: Adult admission: €19.00 (approx.). Children 3–12: €13.00, under 3 free. Family tickets and season passes available.
Hours: In high season: 10:00–18:00; off-season hours reduced—check the official site.
Description: Korkeasaari is Helsinki’s main zoo located on an island. It showcases local and exotic species with well-designed viewing areas and educational trails. Enclosures, interactive zones and educational programs make it a top family outing. The zoo also focuses on conservation and learning activities.
- Local tip: Buy tickets online to skip the queue. Allow 3–4 hours for a relaxed visit.
- Where to eat: Zoo restaurants: mains €8–20; multiple food spots and picnic areas.
10. Kulosaari – Urban walks, architecture and cafés
Address: Kulosaari Island, Itäinen Viertotie / Kulosaari, 00570 Helsinki. Access: bridge and tram (tram 8) towards Kulosaari from downtown.
How to get there: Tram 8 or bus from central Helsinki, or walk from Kalasatama/Katajanokka depending on your start point. No ferry required.
Price: Free to access. Public transport: HSL zone AB ticket €3.50 (single) or valid with an HSL card.
Hours: The neighborhood is accessible all day; local cafés and museums have their own hours (typically 08:00–18:00).
Description: Kulosaari is a pleasant residential island for an urban stroll among Art Deco villas and seaside parks. Less touristy than other islands, it still offers welcoming cafés, flat waterfront paths for cycling and scenic views of passing boats. It’s a lovely half-day option to taste everyday life in Helsinki.
- Local tip: Pair Kulosaari with a café lunch. It’s also a good choice when the weather is cool or rainy since access is quick and simple from the center.
- Where to eat: Café Veri, Itäinen Viertotie 3, 00570 Helsinki — coffees €3–6, light meals €8–15.
Conclusion: Plan your ideal day between nature, history and relaxation
Picking an island around Helsinki for a day trip gives you a palette of varied experiences: Suomenlinna’s historic fortresses, Vallisaari’s wild nature, Pihlajasaari’s lively beaches, and Harakka and Korkeasaari’s discovery centres. This top 10 offers options for every traveler type: families (Korkeasaari, Pihlajasaari), history buffs (Suomenlinna, Isosaari), nature and birdwatching fans (Vallisaari, Harakka), and those seeking relaxation and conviviality (Lonna, Uunisaari, Kulosaari).
Planning: To make the most of a day, think about pairing a historic island (Suomenlinna, Isosaari) with a natural one (Vallisaari, Pihlajasaari) or a foodie stop (Lonna). Start early to catch the first crossings and avoid crowds, especially in summer when ferries and beaches fill up. Check ferry and seasonal shuttle timetables—some islands are served only from May to September. Also consider the weather: a windproof jacket and closed shoes are often useful, even in summer.
Final practical tips: buy your HSL tickets or organized tours in advance via the HSL app or operators’ websites; carry some cash for small kiosks (many accept cards); respect local rules for barbecues and cleanliness, and stick to protected areas on nature islands. Above all, take your rubbish with you and help keep these maritime spaces clean and welcoming for future generations.
Whether you’re after cultural immersion, a day of swimming or a peaceful coastal hike, the islands around Helsinki make for memorable day trips. Use this guide to plan your route, mix popular spots with quieter corners, and let Helsinki’s maritime rhythm carry you—each island has its own story and its own vibe.
