Can you take food with you on a flight to another country?!?

Taking food on the plane is one thing.

The Granola Bar will be no problem. As for the Fruit Salad I could not find anything that specifically said it was okay or not. However, based on a few things it may be an issue. They do allow whole fruit, but the dressing would be considered a liquid/gel and may cause her problems.

But regardless of if she can take it on, she will not be allowed to remove it off the plane in TJ because of regulations regarding food items.

Then just as a side item, you do realize that Tijuana is in Mexico, so saying she has a flight to TJ and then all the way to Mexico is not exactly correct.

She can take them on the plane, and eat them on the plane. But many foods, especially produce, diary, and meat, are restricted between countries. There is a good chance the fruit salad, and other items, would be confiscated by Mexican customs. She would go through Mexican customs at her point of entry into Mexico.

She has to eat them all before going into another country. Home made food cannot be imorted into mmost countries. But really, they serve snacks on planes.

Just give her the Granola Bars, all the food she takes from home, must be consumed prior to landing in Mexico, or dispose of it in the bins provided.

In other words, no.

Tiajuana IS "all the way to Mexico."

almost sure you can