Can you get tan through a plane window?

How can you get tanned while sitting inside an aircraft? Cabin windows don't protect you against UVA rays. The cabin windows on an airplane can block UVB rays, but minimally filter the more harmful UVA rays. This naturally results in tanning, spots, premature aging and wrinkles.



While you can technically get a tan or even a sunburn through a plane window, it is significantly more difficult than on the ground because of the specific materials used in aircraft glass. Most airplane windows are made of three layers of thick stretched acrylic, which is highly effective at blocking nearly 100% of UVB rays—the primary cause of immediate sunburn and tanning. However, these windows do not block all UVA rays, which penetrate deeper into the skin and contribute to long-term aging and skin damage. Since the sun’s intensity increases by about 10% for every 1,000 feet of altitude, you are exposed to much more concentrated UVA radiation at 35,000 feet than at sea level. This is a particular concern for pilots and frequent fliers on long-haul daytime flights. To protect yourself, dermatologists recommend wearing a broad-spectrum sunscreen even when sitting in a window seat, as the "invisible" damage from UVA can still occur despite the lack of a traditional bronze tan.

Getting a tan through a plane window is highly unlikely. Here’s why:

  1. UV Filtering: Most modern airplane windows are made of multiple layers of acrylic or polycarbonate materials that block the majority of ultraviolet (UV) rays, particularly UVB rays, which are primarily responsible for tanning and sunburn. While some UVA rays (which penetrate deeper into the skin) might get through, the amount is minimal compared to direct sunlight exposure.

  2. Altitude and Atmosphere: At cruising altitude (typically 30,000–40,000 feet), the atmosphere filters out a significant portion of UV radiation. While you’re closer to the sun, the protective layers of the atmosphere still reduce UV exposure compared to being on the ground.

  3. Duration of Exposure: Even if some UVA rays penetrate the window, the duration of a typical flight is usually not long enough to cause noticeable tanning.

That said, prolonged exposure to sunlight through a plane window could potentially contribute to skin damage over time, especially UVA rays, which are linked to premature aging and skin cancer. If you’re concerned about UV exposure during a flight, consider applying broad-spectrum sunscreen to exposed skin areas.

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