Great Barrier Reef tour: all 18 boat listings from Cairns, compared

Cairns sits on the coast of Queensland with the reef offshore, and the entire local industry is built on boats that leave in the morning and come back in the afternoon. So a Great Barrier Reef tour is not an attraction you walk into. It is a day defined by a hull, a mooring and a timetable, and the fare mostly buys you three things: how far out the boat goes, how long it stays there, and what is handed to you on board.

The first division is outer reef against the islands. Nine of the 18 listings say Outer Great Barrier Reef on their own pages, and most of those are the longer option: eight to nine hours, lunch written into the fare, snorkelling from the boat at a mooring. The rest work around Green Island and Fitzroy Island instead, where you get a beach and a rainforest walk as well as coral. Neither is the better version of a Great Barrier Reef tour; they are different days.

The second is half a day against a full one. $126 is four hours. $77 is four hours. $147 and $79 are five. Against those, $193, $179, $203, $200 and $182 are nine hours each. A Great Barrier Reef day tour, in the sense most people mean it, is one of the eight-to-nine-hour listings; the four-hour ones are a morning with the reef in it.

The third is the platform. Most listings anchor a boat at a reef site and you get into the water from the back of it. $200 does something else: it ties up at a multi-level pontoon that stays out on the reef, with a glass-bottom boat, a waterslide and space to sit in the shade. $200 pairs that idea with an island, visiting the Moore Reef pontoon and Fitzroy Island in one day with a buffet lunch. If someone in the party would rather not swim, the pontoon listings are the ones to read first.

And the fourth is who is on the boat with you. $182 and $203 are the two that put a number on it — the sailing listing carries 25 guests on a 16-metre boat, and the small-group listing visits two reef locations with a packed lunch. Everything else is a larger vessel, which is what makes the lunch buffets and the dive decks possible in the first place.

What none of the 18 sells is the water. No listing on this site promises you clear water, a turtle or a particular coral, and neither does this page. What is on the listing page is the boat, the hours, the number of sites and the meal, and those are the only things anyone can honestly attach a fare to.

Eighteen listings, four genuinely different days, and one sensible answer in each row of the table above.

If you have one full day, take $216. It is our top pick and the reason is in its own title: three different reef sites of Coral gardens and marine life at the Outer Great Barrier Reef in a single eight-hour day, on the Silverswift catamaran, with snorkelling or diving at each. Most listings give you one mooring or two. This one gives you three, at 4.7 from 657 reviews, and no other day here changes location as often.

If you would rather follow the crowd, take $193. Nine hours, a premium catamaran to the outer reef, lunch on board, and the option to snorkel, dive or stay dry and enjoy the ride. At 3,875 reviews and 4.8 it is the most reviewed and the highest rated of the big days, which makes it the safest booking on this site if reviews are what you trust. This is the best Great Barrier Reef tour by weight of evidence, and the honest reason to pick our top pick over it is the third reef site rather than the rating.

If you want a gourmet version of the same day, take $193. Eight and a half hours, two outer reef sites, a superyacht rather than a catamaran, a buffet lunch, and wine, cheese and crackers on the way home, at 4.7 from 1,654 reviews. $203 is the faster-vessel alternative at the same length, with two named sites on the outer edge of Upolu Reef and Upolu Cay and both snorkel and dive options, 4.8 from 1,626 reviews.

If you only have a morning, take $126. Four hours, a fast ride out to the World Heritage listed reef, and a small-group guided snorkel with a choice of moorings, at 4.7 from 1,931 reviews. $147 is the five-hour version with marine biologist snorkel guides and a selection of 15 exclusive moorings, and at 4.9 it holds the highest rating on this whole site.

If not everyone in the party will get in the water, take $200. Seven and a half hours at a multi-level pontoon on the reef, with snorkelling, a glass-bottom boat tour and a waterslide, so people who want to stay dry still have a day. $200 does the same job with an island attached, visiting the Moore Reef pontoon and Fitzroy Island with a buffet lunch.

If you want a beach as well as coral, take $79. Five hours at Green Island, with snorkelling, a glass-bottom boat option, a rainforest walk and a pool, at 1,916 reviews. $77 is the four-hour morning catamaran and the lowest fare among the reef and island days, and $203 is the nine-hour version on a 16-metre sailing boat limited to 25 guests, with an exclusive reef site and lunch aboard, at 4.8 from 411 reviews.

And if you have two days, take $298. A full-day cruise to the outer reef and a full day in the Daintree Rainforest with a local guide, packaged together at 4.7 from 287 reviews. $470 is the other two-day route: diving and sailing on the outer reef, a night aboard the yacht and a night dive, in a small group.

About diving. Several listings here let you add a dive at the mooring: $203 names snorkel and dive sites, $179 offers a scuba upgrade, and $216 lets you choose at each of its three sites. A Great Barrier Reef scuba diving tour in the certified sense — where the diving is the point rather than an add-on — has its own page on this site, and $470 is the two-day version with a night dive.

About submarines. Nothing on this site is a Great Barrier Reef submarine tour. What exists in the listings is the glass-bottom boat, on $200 and as an option at Green Island, and that is the closest thing here to looking at coral without getting wet.

About seeing it from above. Searches such as tour elicottero Great Barrier Reef come from people who want the view from the air. None of the 18 listings on this site is a flight; they are boats, and this site compares boats only.

About other towns. The reef runs a long way along the Queensland coast, and Cairns is one port on it. An Airlie Beach Great Barrier Reef tour leaves from a different part of the Queensland coast altogether, and a Great Barrier Reef tour from Airlie Beach will not be on this page for that reason. Everything compared here departs from Cairns, with one exception noted below.

About operators people search by name. A Quicksilver Great Barrier Reef tour is a search for an operator that is not among the 18 listings gathered here. This site compares what is bookable on GetYourGuide for Cairns, which is why the boat names you will read in the table are Silverswift, Spirit of Cairns and the unnamed catamarans and superyachts of the other listings.

About the phrasings. Search boxes rearrange the words and every version lands on the same 18 boats: Cairns barrier reef tour, Cairns to Great Barrier Reef tour, Great Barrier Reef boat tour, outer reef tour Cairns, tour of the Great Barrier Reef. People type a reef tour from Cairns just as often as the full name of the place. The listings, the moorings and the fares do not change with the word order.

About the one boat that does not leave from town. $182 cruises from Deeral rather than the city, through rainforest waterways before it reaches the coral of the outer reef. It is nine hours like the others, but the departure point is different, and that is on its listing page rather than hidden.

What people talk about afterwards. The same four things across the reviews: how long the ride out takes, how much of the day is actually spent in the water, whether the lunch was worth the fare, and how tired everyone was by the time the boat tied up again.