If you have a panic attack on a flight, you should immediately notify a flight attendant; they are professionally trained to handle medical and psychological emergencies with discretion. They can provide you with oxygen if you are hyperventilating, offer cool towels, or simply move you to a more private area (like the galley) to help you de-escalate. They may also ask if there is a medical professional on board who can assist. Physiologically, you might feel a racing heart, sweating, or a sense of doom, but remember that the cabin air is highly filtered and the plane is a safe environment. Many passengers find relief using grounding techniques, such as the "5-4-3-2-1" method (identifying 5 things you see, 4 you can touch, etc.) or "box breathing" (inhale for 4, hold for 4, exhale for 4). Most airlines in 2026 also have access to "MedAire," a ground-based medical service that pilots can call to get professional psychiatric advice for a distressed passenger in real-time.