Passengers often focus on packing essentials before a flight, but sunscreen is rarely seen as a priority. However, dermatologists caution that choosing a window seat may expose travelers to more ultraviolet radiation than many realize. At cruising altitude, UV exposure can be nearly twice as strong as at ground level, increasing potential risks to skin health.
While aircraft windows are designed to block most UVB rays, which are primarily responsible for sunburn, they are far less effective against UVA radiation. UVA rays, which have longer wavelengths, can penetrate glass and are associated with premature skin aging, inflammation, and long-term skin damage. Specialists note that standard cabin windows do not provide complete protection against these rays, and the thinner atmosphere at high altitudes further increases overall UV exposure, making sunscreen an important in-flight precaution, especially for frequent flyers.
Experts also point out that airplane cabins are extremely dry, with humidity levels often falling below 20 percent. This can leave skin dehydrated and more vulnerable to irritation. To counter these conditions, they recommend using a sunscreen that offers UVA protection while also supporting skin hydration. In addition, travelers are advised to drink plenty of water before boarding and to apply a moisturizing serum along with a barrier cream as part of their in-flight skincare routine.