In general, airlines expect passengers to wear shoes that are appropriate and comfortable for the duration of the flight. Avoiding shoes with excessive heels, open toes, or slippery soles is advisable, as they may pose safety concerns or discomfort during the journey.

For air travel, closed-toe shoes (specifically slip-on sneakers) are the superior choice over sandals for several safety and comfort reasons. First, airplane cabins are notoriously cold, and feet often swell during long flights; breathable sneakers provide better temperature regulation and support than flat sandals. From a safety perspective, in the rare event of an emergency evacuation, sturdy shoes protect your feet from debris, heat, and uneven terrain, whereas sandals or flip-flops can easily trip you up or be lost. Additionally, walking through large airport terminals like Heathrow or Dubai can involve miles of trekking where sandals offer zero arch support. In 2026, "recovery slides" are popular for mid-flight comfort, but you should always wear a reliable pair of shoes for the boarding and landing process. Lastly, wearing shoes with socks is a courtesy to your fellow passengers, as it keeps bare feet (and potential odors) contained in the pressurized cabin.