The full answer
Yes — solid gluten-free food is generally fine to bring on flights
Solid gluten-free snacks and meals are generally permitted through airport security and on flights, both domestically and internationally in most cases — the usual liquid restrictions apply the same way they would for any other food.
A practical tip
Airline meals are often not reliably gluten-free even when requested in advance, so bringing your own food remains the most dependable option — pair this with the packing tips in what to pack when traveling.
Important context
Individual symptoms, reactions, medical histories, food products, and local labeling rules can vary. Community experiences are not medical evidence.
For personal medical decisions, diagnosis, testing, or treatment, consult a qualified healthcare professional.