Hello Rafael,
Thanks for trusting us at planDisney with your question. It's a really smart idea to stay hydrated throughout your fun day at the park!
You can definitely bring your Hydroflask filled with ice through security at
Disneyland. I always bring my own water bottle with ice too – it's such a great way to keep refreshed while enjoying all the attractions and shows. Just a heads up, though: if your Hydroflask has any glass components, it will be
prohibited, as glass containers are not allowed for safety reasons.
When you pass through security, if your Hydroflask has metal parts, they might ask you to place it in a bin for a quick check, but this is pretty standard and usually quick.
Remember, you can refill your bottle at water fountains throughout the park, and most quick-service dining locations offer complimentary ice water upon request.
I hope this helps, Rafael, and that your trip to Disneyland is filled with magical moments and lots of fun. Staying cool and hydrated is key to enjoying your day to the fullest! If you have any more questions or need further tips, feel free to reach out to us here at planDisney.
~Yael