Do I need sunscreen in an airplane window seat?

Why does the window matter?

Harmful UV rays passing through windows can contribute to skin cancer and premature skin aging. An airplane window can let UVA through, despite the very convincing indoor seating arrangement. The practical advice here is for daytime flights, especially window seats, rather than a separate sunscreen routine for flying at night.12

How should I apply sunscreen before flying?

1. 1Choose a broad spectrum, water resistant sunscreen with SPF 30 or higher. Broad spectrum means protection against both UVA and UVB. SPF measures UVB protection, so the SPF number alone is not the whole label to check.
2. 2Apply before boarding. For outdoor exposure on the way to the airport, allow approximately 15 minutes after application before going outside.
3. 3Cover all skin not covered by clothing, including your face, neck, ears and exposed hands. For your face, use at least one teaspoon and rub it in thoroughly. Protect your lips with SPF 30 or higher lip balm.
4. 4Once seated, lower the window shade when possible and use sun protective clothing. Treat sunscreen, clothing and shade as complementary protection rather than choosing just one.

Should I reapply sunscreen during a daytime flight?

Yes. Reapply every two hours during longer daytime flights, rather than treating the application before boarding as protection for the entire flight. Reapply sooner after sweating or if sunscreen has rubbed off. Use enough to cover the exposed skin again: applying sunscreen too thinly reduces its protection. Closing the window shade adds protection, but keep sunscreen available for your daytime journey.14

What sunscreen should I pack?

Buy sunscreen in a travel size rather than transferring it into a refill bottle, leaving one less tiny container to manage. Original packaging protects the formula and helps maintain stability; transferring sunscreen into an untested or non airtight bottle can make it less effective. Check the expiration date before packing and store sunscreen somewhere cool and dry. Excessive heat can reduce its effectiveness. If you have sensitive skin, bring your usual skincare products rather than introducing unfamiliar products during the trip.12

Who should take extra care?

Be especially careful if you burn easily, have many moles or have a family history of skin cancer. Sun protection still matters for all skin tones. If you develop sunburn, stay out of the sun until the redness has gone. Seek medical help if you feel unwell or your skin swells badly or blisters.4