It's on their website. A 1 day pass is $54 but there are other options that cost more but you get more stuff
It depends on if you are part of an educational group, have a Zoo membership, are a senior citizen, etc. Your best bet is to go to the zoo website for info on your particular entrance fee.
$54 online
Agreed
You can bring in your own food and drink. We bought a family pass for under 300. We pack a backpack or leave the cooler in the car. You can come and go as you please. Enjoy a picnic at Balboa Park which is right next door.
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