19 Genius Travel Secrets From Frequent Flyers

Regardless of the season, an oversize scarf must make your packing list. I suggest wearing it on the plane, where it doubles as a blanket and doesn't take up space in your bag.

In general, layers are key: "I like to bring versatile items that aren't bulky and can be layered based upon the weather — like scarves, skinny jeans, ballerina flats, and tank tops," said Raya Dharnidharka, a flight attendant for Virgin.