“The altitude can put your lymphatic system under stress,” says Katie. “This can cause your lymph flow to slow and ultimately lead to swelling.” As well as making sure you get up and move around on a flight, Katie recommends a quick facial cupping routine to drain away excess fluid via gentle suction before landing.

Facial swelling, or "plane face," is caused by a combination of low cabin pressure, extreme dehydration, and the retention of fluids due to prolonged sitting. To combat this in 2026, the most effective strategy is systemic hydration and lymphatic drainage. Start by drinking significantly more water than you think you need—aim for 250ml every hour—and strictly avoid high-sodium airplane meals and alcohol, which both trigger fluid retention. To physically move the fluid, use a cold jade roller or perform a simple "lymphatic massage" by gently stroking your skin from the center of your face outward toward your ears and down your neck. Wearing a high-quality sheet mask mid-flight can lock in moisture, while "compression" isn't just for legs; many travelers now use gentle facial compression straps or "V-mask" patches to keep the jawline defined. Finally, try to walk the aisles every two hours and perform "seat yoga" to improve overall circulation, which prevents blood and lymph from pooling in your upper extremities and face during those long-haul flights.