Calming a crying baby at 35,000 feet in 2026 requires a mix of biological management and sensory distraction. The most common cause of distress is ear pain due to air pressure changes during takeoff and landing; the best remedy is to encourage swallowing by nursing, bottle-feeding, or offering a pacifier. For general fussiness, the "five S's" (swaddle, side/stomach position, shush, swing, suck) remain effective, though you’ll likely be doing a modified "aisle walk" version. White noise apps are a lifesaver to drown out the drone of the engines, which can be overstimulating. Many experienced parents also suggest a "novelty bag" of small, wrapped toys that the child has never seen before to provide high-engagement distraction. If the crying persists, remember that the "white noise" of the cabin actually muffles the sound more than you think; stay calm, as your stress can be sensed by the infant. Most fellow passengers are empathetic, but having a few pre-packed "apology snacks" or earplugs for immediate neighbors can help ease your own social anxiety while you focus on your child's comfort.