The flamingos live on Renaissance Island, a private island belonging to the Renaissance Wind Creek resort in Oranjestad. You reach it by the resort's own boat from inside the hotel. It is not a public beach, there is no road to it, and you cannot simply turn up.
The island has two beaches, and the difference matters enormously if you have children. Flamingo Beach is the adults-only side. Iguana Beach is the family side, and it has its own charm (iguanas, calm water, a playground area), but the flamingos are on the other side of the water. In practice the resort has long run a limited morning window, roughly 9 to 10 a.m., in which accompanied children may visit Flamingo Beach. Confirm that window directly with the resort when you book, because it is a policy, not a law, and policies change.
Access itself is the second catch. Staying at the resort includes island access. Day passes for non-guests exist but are released in small numbers, only when the hotel has room to spare, and they sell out immediately. Plan on either booking a night at the resort or treating a day pass as a lucky break rather than an itinerary item.
One more thing worth telling your kids: this is a resident, cared-for flock, not a wild colony. Wild flamingos do occasionally drift through Aruba's salt pans, but they are not something you can plan a morning around. Knowing that in advance is the difference between a magical hour and a confusing one.
Flamingos are born gray and turn pink from the shrimp and algae they eat. You really are what you eat!
A flamingo is a chogogo in Papiamento, a word borrowed across the Dutch Caribbean, and much more fun to shout than "flamingo."
Most sightings require a Renaissance Island day pass.
More finds nearby
The Butterfly FarmHundreds of butterflies flying free, and a ticket good for your whole stay.
Snorkeling With Sea TurtlesTwo calm coves where kids can shore-snorkel with wild green turtles.
Eagle BeachWide, white, calm and shallow: the best all-round family beach on Aruba.
Turn the list into a treasure hunt
Buska gives kids 75 Aruban treasures to find and photograph (this one included) and turns the trip into a keepsake book. Free to start, no ads, private by default.