Dublin is compact enough that the open-top bus question is narrower here than in most capitals: the medieval core is a walk, and only the western sights really need wheels. Two companies run the main loops, a third red-bus franchise covers a longer stop list, and the Transport for Ireland network underneath all of them can do most of the same work for two euro a journey. How much you get from a ticket depends almost entirely on how many times you actually get off.
DoDublin, Big Bus and City Sightseeing: who runs the buses
DoDublin is the commercial arm of Dublin Bus and has run the green and yellow double-deckers since 1988, over a 25-stop original route plus a separate Docklands shuttle. Big Bus Tours is the international chain, working its Red Route across 25 stops in maroon and cream. City Sightseeing's red buses are operated locally by Dualway Coaches and advertise 30 stops across three ticket tiers. All three pick up on the same stretches of Nassau Street, College Green and O'Connell Street, which is where most confusion begins: the pole is shared, the tickets are not, and a driver will simply ask you to pay again if you board the wrong livery.
Both main operators run live vehicle tracking, through the Big Bus Tours app or the DoDublin web map, and both sell rolling validity rather than calendar days. A 24-hour pass scanned at 14:15 stays live until 14:15 the next afternoon, and multi-day passes run on consecutive days from the first scan, so a 48-hour ticket activated on a Monday cannot be saved for Thursday. Our guide to calendar days versus 24-hour rolling tickets covers where that distinction costs money, and the two Dublin operators are compared line by line in DoDublin versus Big Bus Dublin.
The commentary is the clearest difference between them. DoDublin runs a live English tour on the hour with a Fáilte Ireland-trained driver-guide, alternating with recorded multilingual buses covering eight languages, and the guides are Dublin Bus drivers who work the city every day. Big Bus puts an English-speaking live guide on every bus and adds a location-synchronised audio guide on most of the fleet. If a specific foreign language matters to you, the recorded track is the one to check rather than the live tour.
The first bus out of Upper O'Connell Street on a bright Saturday in early autumn was already half full when it pulled in at 09:00, and by Trinity the top deck had standing room only. Coming back west past St James's Gate later that afternoon, the only seats left were downstairs. If the open top is the reason you are buying, board at Stop 1 or walk up to Parnell Square North rather than joining at College Green.
Ticket prices and what each pass includes
DoDublin green bus
DoDublin publishes its own fares and applies a reduced online rate on top of the gate price, so what you pay depends on when and where you book. The figures below are the full adult rates; one child under 15 travels free with each adult, and the same ticket carries free entry to the Little Museum of Dublin and the Docklands shuttle.
| Pass | Adult fare | Online rate | Included beyond the loop |
|---|---|---|---|
| 24 hours | €34 | from €28.90 | Docklands shuttle, Little Museum of Dublin entry |
| 48 hours | €39 | from €33.15 | As above |
| 72 hours | €44 | from €37.40 | As above |
Child tickets run €14, €19 and €24 across the three durations, and students and seniors pay €32, €37 and €42. Full details and the checkout discount are on DoDublin's ticket page. The pass does not include admission to the Guinness Storehouse, EPIC, Teeling or the Jameson distillery, but DoDublin sells bundles that pair the bus with one of those attractions at a small saving, plus a Days Out card that adds six city attractions at a deeper discount.
Big Bus Red Route
Big Bus prices three tiers, again with an online rate below the gate price. The entry tier is the loop on its own; the middle tier adds a guided walking tour and a one-hour panoramic night tour that leaves at 19:00 and 20:30; the top tier adds the Wicklow Mountains and Dublin Highlights day trip. The night tour is also sold separately, and one child rides free with each adult on the core tiers.
| Tier | Online from | Full price | Adds |
|---|---|---|---|
| Discover, 24 hours | €31.50 | €35.00 | Red Route loop |
| Essential, 48 hours | €36.90 | €41.00 | Walking tour, panoramic night tour |
| Explore, 72 hours | €60.30 | €67.00 | Night tour, walking tour, Wicklow day trip |
Current tiers and inclusions are listed on the Big Bus Dublin tickets page. Fares on all three operators move with the season and with whatever promotion is running, so the online rate is usually the one worth comparing, and the Kids Go Free offer is itself described by the operator as time-limited.
City Sightseeing red bus
City Sightseeing undercuts both operators on the entry ticket, with its Essential pass at €34 and Premium and Supreme tiers at €45 and €55. The middle tier adds a ticket to either the Irish Whiskey Museum or World of Illusion, and the top tier folds in a sightseeing bike component. Buses run every 15 to 20 minutes from a 09:15 first departure to a 17:00 last departure, and the 30-stop route includes the Docklands, which neither of the other two covers on its main loop.
Routes, stop numbers and the Docklands shuttle
Both main loops leave Stop 1 at 09:00 and diverge at the end of the day. DoDublin runs every 20 to 30 minutes until 18:00 from May to September and every 30 minutes until 17:00 from October to April; Big Bus keeps 20 to 30 minute headways with a 17:00 last departure all year. A full circuit takes 1 hour 45 minutes on the green bus and 1 hour 50 minutes on Big Bus, before quays traffic is added. DoDublin's Stop 1 sits outside the Dublin Bus head office at 59 Upper O'Connell Street, a few doors from the Big Bus start point at 13 Upper O'Connell Street.
| Attraction | DoDublin stop | Big Bus stop |
|---|---|---|
| Trinity College and the Book of Kells | 4 (Nassau Street) and 10 (College Green) | 2 and 8 |
| St Stephen's Green and the Little Museum | 7 | 6 |
| Christ Church Cathedral and Dublinia | 13 | 11 |
| St Patrick's Cathedral and Marsh's Library | 14 | 12 |
| Teeling Whiskey Distillery | 15 | 13 |
| Guinness Storehouse | 16 | 15 |
| Kilmainham Gaol and IMMA | 18 | 17 |
| Phoenix Park and Dublin Zoo | 20 | 20 |
| Jameson Distillery Bow Street | 23 | 23 |
The numbering matters more than it looks. Trinity and the Book of Kells are best reached from the Nassau Street stop rather than the College Green one, because the exhibition entrance is inside the Front Square. The two cathedrals sit about 600 metres apart, so Christ Church and St Patrick's are comfortably done on foot between their two stops, with Marsh's Library, next to St Patrick's and founded in 1707 as Ireland's oldest public library, filling the gap between them.
The loop also runs the western sights in one continuous sweep, which is worth exploiting: Christ Church, St Patrick's, Teeling on Newmarket Square, the Guinness Storehouse at St James's Gate, Kilmainham and then Phoenix Park come in that order, so following the bus rather than criss-crossing the city saves a full circuit. Whiskey is where the stop numbers most often trip people up. Teeling is a working distillery with copper pot stills in the Liberties; the Jameson Distillery Bow Street in Smithfield is a visitor centre built around the original 1780 site across the river. They are separate stops on opposite banks, and a ticket bought at one is not valid at the other.
The Docklands shuttle
DoDublin is the only one of the three with a second route, and it is the piece visitors misread most often. The Docklands loop is not a continuation of the main tour: it leaves from the top of Parnell Square, which is Stop 2 on the original route, and runs about 45 minutes past the Custom House, the Jeanie Johnston and EPIC, the Samuel Beckett Bridge and Grand Canal Square. It costs nothing extra with a DoDublin ticket, is live-guided in English only, and between October and May it makes just two departures a day, at 09:05 and 15:05.
I once spent twenty minutes on Custom House Quay waiting for a Docklands bus that never appears there, until a driver explained that the loop begins back at Parnell Square. Ride the main tour to Stop 2 and pick the shuttle up a few steps away instead of trying to intercept it on the quays.
Quays traffic and the bus gates
Dublin City Council brought in its city-centre transport plan on 25 August 2024, closing the two quayside rat-runs that used to hold the loop up: general traffic can no longer drive straight from Bachelors Walk onto Eden Quay on the north quays, or from Burgh Quay onto Aston Quay on the south, between 07:00 and 19:00. The council reported bus journey times on the quays down by more than a fifth within the first month. College Green and Westmoreland Street still crawl through the Luas Cross City junctions, so leave a cushion before any timed booking in the late afternoon.
Where the bus genuinely beats walking
Central Dublin is walkable; the western ring is not. Guinness Storehouse, Kilmainham Gaol and Phoenix Park sit two to four kilometres from the medieval core, and the loops put you at the gate rather than at the end of a long walk or a change of city bus at Heuston. Guinness is the clearest case, because the stop is at St James's Gate directly outside the Storehouse.
Kilmainham is the stop where the bus does not solve the problem on its own. Both loops serve it from the Royal Hospital Kilmainham and IMMA stop on Saint John's Road, a few minutes' walk from the gaol gate, and the OPW sells timed tickets only through its own site. Pre-booking is essential, adult admission is €8 with a €20 family ticket, and the visit takes about 90 minutes. Resale platforms that appear to sell Kilmainham tickets are not authorised and their tickets are refused at the entrance. The evening before a spring visit I found every slot for the following day gone and took the Luas Red Line out to Heuston instead. Booking details are on the Heritage Ireland page for the site.
Phoenix Park is the other western stop worth the ride. The bus drops you on Chesterfield Avenue opposite the Wellington Monument, and the fallow deer herd grazes the open grassland of the Fifteen Acres within sight of the road. Dublin Zoo and Áras an Uachtaráin share the same stop.
Beyond the city loop: day trips sold alongside the tickets
Both operators use their buses as a shop window for longer excursions that are not part of the hop-on circuit. Big Bus runs a half-day Coastal Tour to Howth and the Wicklow Mountains and Dublin Highlights day trip to Glendalough, both with their own departure times and advance booking in summer, and the 72-hour Explore tier bundles the Wicklow trip with the loop. City Sightseeing's local operator Dualway also sells day excursions out of the city, including Glendalough and Malahide Castle. These are separate products from the hop-on pass, they do not accept hop-on tickets, and they leave from fixed points rather than from the numbered city stops.
Tour bus or Leap Card: the real cost comparison
The public network under the tours is cheap and quick enough that the comparison is rarely close. Under the TFI 90-minute fare, an adult journey on Dublin Bus, Go-Ahead Ireland, the Luas or DART inside Zone 1 costs €2.00 and covers unlimited transfers within 90 minutes, while a child pays €0.65. Daily spending caps at €6.00 for an adult and €1.95 for a child, with weekly caps of €24.00 and €7.80. Visitors who would rather not top up a card can buy a Leap Visitor Card for €8.00 over 24 hours, €18.00 over 72 hours or €24.00 over seven days; it includes the airport city buses but is not valid on any hop-on hop-off tour. Tap on and tap off on the Luas, DART and commuter rail, because a missed tap on the tram attracts a €100 Standard Fare Notice.
Even at the discounted rate, a DoDublin day pass costs the same as roughly fourteen €2.00 journeys, and a family of two adults and two children travelling on Leap caps spends €15.90 a day against €68.00 for two full-fare adult tour tickets. The trade-off between the two, including when a tour pass is worth the premium, is worked through in our Dublin bus versus Leap Visitor Card comparison.
The Freedom Ticket
DoDublin's Freedom Ticket bundles a 72-hour Visitor Leap Card with a 48-hour green bus pass for €49.00, which beats buying the two separately if the airport bus is part of the plan. The catch is collection: the voucher must be exchanged for a physical card at the Dublin Bus head office on Upper O'Connell Street, at Wild Rover Tours on Stephen Street Lower, or at the ICE desks in Terminal 1 and Terminal 2 arrivals at Dublin Airport, and it cannot be redeemed on a bus. The included Leap card covers airport routes 16, 19, 24, 41 and 102, but not the commercial Dublin Express or Aircoach coaches, and the 72-hour clock starts on first use rather than at collection.
Families
With children the maths swings toward the tours. Two adults and two children on DoDublin pay for two adult tickets only, because one child rides free with each adult, so the family day costs the price of two passes rather than four. The same family on city buses and the Luas reaches the €15.90 daily cap, but a third child breaks the promotion and needs either a child tour ticket, listed at €14 for 24 hours, or their own €1.95 Leap cap.
When the buses stop, and how to get back
These are daytime services. The last full departures leave O'Connell Street at 17:00 in winter and 18:00 in summer, after which the vehicles return to the depot. Being dropped at Kilmainham or Phoenix Park late in the afternoon is the classic way to strand yourself, and the return falls to the Luas Red Line from Heuston or Suir Road, a city bus along James's Street, or a taxi through FreeNow or Uber. Rain empties the top deck faster than anything else, and the covered seats downstairs are the reason a wet loop is still worth doing.
What is not worth paying for
Three things on the Dublin menu are easy to overpay for. The 72-hour Explore tier only pays off if the Wicklow day trip is genuinely on your list, since the trip is also sold on its own and a two-day visitor gains nothing from the longer pass. The combined bus-and-bike tickets make sense only if you will actually cycle, and central Dublin's traffic and one-way quays make that a real decision rather than a free extra. Riding the loop as ordinary transport is the weakest value of all, because the same journey on the Leap network costs a fraction of a tour ticket.
Two smaller cautions. Recorded commentary is not guaranteed on every bus: Big Bus fits audio guides to most vehicles and DoDublin runs recorded multilingual buses on alternate departures, so if a particular language matters, ask at the stop which departure carries it. And the upper deck is the only deck with a view; on a packed afternoon bus you may ride downstairs behind glass, which is worth knowing before you commit a whole day to the loop.
Who gets value, and who should walk
Buy a tour ticket if this is your first visit and you have 24 to 48 hours, if you plan to pair Guinness with Kilmainham on the same day, or if you are travelling with up to two children who ride free. I would take DoDublin over Big Bus when live commentary is the point of the ride, because the green buses put a trained driver-guide on board and the Docklands shuttle comes with the same ticket.
Skip the bus if you have three days or more, if your list is Trinity, Grafton Street, Temple Bar and the cathedrals, or if you are counting every euro. Those stops are about 25 minutes of walking end to end, and the Leap network covers everything else. RedClick dublinbikes is the middle option: a 1-day ticket costs €3.50, the first 30 minutes of every ride are free, and an annual subscription is €35, though Dublin City Council said in May 2026 that it intends to replace the scheme with a fleet of around 4,000 bikes when the current contract ends in 2027.
Accessibility and the details that decide a day
DoDublin says its whole hop-on hop-off fleet is wheelchair accessible, which makes it the safer choice when step-free boarding matters. On Big Bus, the audio guide runs through a 3.5 mm headphone jack on most buses, with free earphones near the driver and no Bluetooth connection, so a pair of wired headphones is worth packing. On both operators the live guide speaks over a microphone, which means commentary that reacts to traffic and weather rather than a track timed to the landmarks.