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

“This is an amazing experience for all age ranges. It’s important to note that they need confirmation from a doctor if you are over a certain age in order to dive (this information is sent to you in multiple emails prior to the tour). We…”

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3.Passions of Paradise Great Barrier Reef Cruise by Catamaran

Discover the full-day Passions of Paradise catamaran tour from Cairns, offering snorkeling, marine life, delicious food, and expert guides—all at great value.

★ 5.0

“This full day trip is seriously amazing and so worth it, you'll totally lose track of time. The whole crew was super helpful and really wanted to make sure you were comfy. Huge thanks to Parker, Darcy, Simon, and the team for taking such good…”

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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

“Awesome experience. The crew was great from the start and instructions were clear. They guided the snorkelers and got everyone in the water, even those who were timid to try it. The food was great and every time I turned around they were passing around…”

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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 is an excellent tour option for those that do not like big crowds. This tour is capped at 12 people and it was perfect. Our guides, Sam and Jess, were very professional and experts in their field. Highly recommended for those that prefer smaller…”

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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

“The tour was amazing, we spent whole 3,5 hours snorkelling the great barrier. The crew was really supportive and was always taking care of the passengers. Besides, as we were a really small group of people, we had the pleasure of exploring the barrier without…”

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9.Calypso Outer Great Barrier Reef Cruise from Port Douglas

Experience the stunning Great Barrier Reef from Port Douglas with this full-day, all-inclusive cruise offering snorkeling, diving, and expert guides.

★ 5.0

“I acknowledge that this tour is expensive, but it was completely worth the investment. This was a once-in-a-lifetime adventure, and none of our family of four will ever forget it. The boat was a very comfortable spot to spend the day (when we weren’t in…”

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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

“Lily, Renee and Elenor were awesome! Ended up being pretty dang clear in the water even with the torrential downpour on the way there. Great little half day trip!”

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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

“Highly recommend Divers Den tour operator. Well planned tour. They have high safety standards which is very important for snorkeling and scuba diving tour.”

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12.Cairns: Outer Great Barrier Reef Full-Day Tour with Lunch

Discover the Great Barrier Reef with a full-day luxury tour from Cairns, including snorkeling at two sites, a gourmet BBQ, and complimentary wine.

★ 4.7

“Best diving tour at the outer Great Barrier Reef! Luxurious ship in combination with extremly professional arrangements and staff. Loved every minute of it. The Finnish dive masters was amazing.”

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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

“First time on the reef. Fantastic experience with fantastic people. I was snorkeling but my wife came along for the ride (she has always said she was afraid of the water). Well, on the second reef, the staff convinced her she would be in gooRead…”

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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

“Easy check in and was show our place on the boat for the day. The 2 reef stops were long so great time for snorkelling and a scuba dive. The safety briefings were very informative. Was nervous for the scuba dive but Mike was great.…”

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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

“Whole day was spent on an outer reef pontoon (even if it rains in Cairns, it is still likely to be sunny in this part of the reef). All equipment for snorkelling was provided and the crew asked for everyone's swimming and snorkelling proficiencies. Assistance…”

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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.