Cairns & Port Douglas

15 Best Great Barrier Reef Tours from Cairns

The reef days from Cairns and Port Douglas compared: outer-reef catamarans, small-boat snorkel charters capped at a dozen passengers and dive add-ons for the certified. The outer edge runs clearest; the longer steam out buys the visibility.

1.Great Barrier Reef Snorkeling and Diving Cruise from Cairns

Experience the Great Barrier Reef with a full-day snorkeling and diving cruise from Cairns, including reef visits, a barbecue lunch, and optional helicopter flight.

Most Popular★ 4.5

“I am an inexperienced snorkeler, so I was doubtful when I booked this cruise. My partner really wanted to do it though. I was pleasantly surprised. They had a guide in the water with a floater who took me around the great barrier reef so…”

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2.From Cairns: Great Barrier Reef Cruise by Premium Catamaran

Experience the Great Barrier Reef on a 9-hour premium catamaran trip from Cairns, with snorkeling, marine wildlife, and a chef-prepared lunch.

★ 4.9

“Extremely well organized. Clear that safety was number one priority but at same time ensuring high levels of customer service. Lunch was excellent and well prepared and snacks were provided. Locally owned company and very green focused.”

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5.Ocean Freedom Great Barrier Reef Luxury Snorkel and Dive Cruise

Discover the vibrant coral reefs of the Great Barrier Reef on the Ocean Freedom luxury cruise from Cairns. Snorkel, learn, and enjoy top-tier service for a memorable day.

★ 5.0

“Staff was super nice and everyone was super kind. Both snorkel sites were amazing and we saw a blue star fish and a few turtles. It was a memorable trip. However a few suggestions: (1) Boat was super crowded. If you prefer a small group,…”

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7.ABC Snorkel Charters Port Douglas Snorkelling max 12 passengers

Discover the Great Barrier Reef with a small group snorkeling tour from Port Douglas, guided by marine biologists, focusing on remote sites and personalized service.

★ 5.0

“This was the highlight of our 4 week trip! By far the most amazing excursion we have been on in our travels, and an amazing way to explore the GBR. The small group and experienced guides were fantastic. We saw so much of the reef…”

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8.Cairns: Great Barrier Reef Full-Day Tour

Experience the vibrant coral reefs and marine life on a full-day snorkeling tour from Cairns, including quality equipment, guided tours, and a tropical buffet.

★ 4.6

“I had a wonderful day on the water. The crew was super nice and helpful. The Lunch was good and after the second stop we got some fresh fruit which was great.”

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10.From Cairns: Great Barrier Reef Half-Day Snorkeling Tour

Discover the Great Barrier Reef on a half-day snorkeling tour from Cairns with small group guides, stunning marine life, and personalized experiences for $118.

★ 4.7

“The crew was fantastic. They took great care of us on the boat and in the water. They were very informative and helpful throughout the day. I would recommend this to anyone wanting to experience the Great Barrier Reef and the absolutely beautiful scenery and…”

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11.Great Barrier Reef Full Day Tour from Cairns

Discover the Great Barrier Reef from Cairns with this full-day tour offering snorkeling and diving at two reef locations. Enjoy meals, expert guides, and marine wildlife encounters.

★ 4.5

“That was a wonderful experience with an amazing team ! They brought a good energy throughout the day, they were always making sure that everyone was having a good time I did snorkeling and it was so beautiful, that was actually on my bucket list…”

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13.Seastar Luxury Outer Great Barrier Reef Island and Reef Tour

Experience the Great Barrier Reef on a luxury catamaran, with snorkeling, guided tours, and delicious buffet lunch—perfect for an authentic Aussie adventure.

★ 5.0

“We had a wonderful trip with this family owned business. We really appreciated the attention to detail of the crew and their safety focus. I appreciated the extra attention given to my mother who needed a lot of assistance in the water. They made a…”

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14.Cairns: Great Barrier Reef Cruise & Scenic Helicopter Flight

Experience the Great Barrier Reef from Cairns with a full-day cruise, snorkeling, optional diving, and a scenic helicopter flight—all in one adventure.

★ 4.7

“We had an amazing day, the staff couldn’t be more entertaining or accommodating the whole day. The efforts from the guide to support first timers to snorkelling were brilliant, big shout out to Luca who took us to see a turtle he’d spotted out on…”

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15.Snorkel & Dive the Reef: Sustainable, Scientific & Cultural Tour

Discover the Great Barrier Reef on a full-day tour from Cairns featuring snorkeling, marine biologist guides, and eco-friendly activities for all ages.

★ 4.5

“Had an unforgettable day! The staff was incredibly friendly, helpful, and knowledgeable—they went above and beyond to ensure we had an amazing and safe experience. I still can't believe we swam in the Great Barrier Reef and actually saw NRead more”

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More Great Barrier Reef Tours from Cairns

4.5Sunlover Reef Cruises Cairns Great Barrier Reef Experience$211.59 4.7Cairns: Great Barrier Reef Snorkeling Cruise with Lunch9 hours$127 4.5Quicksilver Great Barrier Reef Snorkel Cruise from Port Douglas$233.10 4.4Cairns: Fitzroy Island Ferry w/ Snorkel, Lunch, Tour Options$69 4.9Port Douglas: Outer Great Barrier Reef Snorkeling Cruise8 hours$210 5.0Ocean Free 25 guest Great Barrier Reef & visit Green Island Tour$200.11 5.0Full Day Low Isles Sailing & Snorkelling Cruise from Port Douglas$243.86 4.7Cairns: Silverswift 3 Great Barrier Reef Sites in 1 Day8 hours$209 4.8Port Douglas: Quicksilver Outer Barrier Reef Full-Day Cruise7 - 9 hours$195 5.0Silversonic Outer Great Barrier Reef Cruise from Port Douglas$192.04 4.8From Cairns: 40-Min Scenic Reef Window Seat Airplane Flight40 min$190 4.7Port Douglas: Low Isles Glass Bottom Boat & Snorkeling Tour4 hours$135 4.9Port Douglas: Outer Barrier Reef Snorkel and Dive Options7.5 hours$174 5.0Outer Reef Mackay Cay Sail & Snorkel Adventure from Port Douglas$243.86 4.5Silverswift Dive and Snorkel Great Barrier Reef Cruise$212.30 4.5All Inclusive Day Tour to Frankland Islands Great Barrier Reef$179.31 5.0Full-Day Great Barrier Reef Sailing Trip from Cairns$179.31 4.8Cairns: Green Island & Great Barrier Reef Sailing Tour9 hours$183 5.0Half Day Low Isles Snorkelling Tour from Port Douglas$175.72 5.0Cairns Half Day Tour a Great Barrier Reef Snorkeling Experience$128.39 4.0Snorkelling and Glass Bottom Boat at Green Island from Cairns$107.59 4.9Cairns: All-Inclusive Great Barrier Reef Half-Day Snorkeling5 hours$140 5.0Afternoon Low Isles Snorkelling & Sunset Sail from Port Douglas$243.86 4.5Cairns: Outer Great Barrier Reef Pontoon with Activities7.5 hours$208

Explore Cairns & Port Douglas

The reef out front, the oldest rainforest behind and a railway between.