10 Best Travel Carry On Backpacks 2026 in the United States

The Thule Landmark Backpack 40L is a well-sized carry-on option for travelers who want a mix of security and organization. Its 40-liter capacity fits the typical carry-on size, making it a good choice for short trips or as a main travel backpack. Weighing 1.44 kg (about 3.2 pounds), it’s reasonably lightweight for its size, so it won’t add much burden while on the move. Made from durable polyester, the bag feels sturdy but isn’t water-resistant, so it may need an extra rain cover in wet weather. It has five compartments and six pockets, including special spots like the hidden CashStash pocket under the SafeZone compartment to keep passports and money safe from pickpockets—great for peace of mind during travel. The bag also offers secure zipper pulls with LoopLocks, which add an extra layer of theft protection.

The Thule Aion Travel Backpack 40L is a solid choice for travelers needing a carry-on-sized backpack that combines eco-friendly materials with practical features. Its 40-liter size fits easily within most airlines' carry-on limits, making it convenient for short trips. Weighing about 1.45 kilograms (3.2 pounds), it is lightweight enough for comfortable carrying without feeling bulky. The backpack’s fabric is made from 100% recycled polyester with a water-resistant coating, which helps protect your belongings from light rain or spills. The unique waxed canvas look adds style but may show marks or color variations, which some may find charming while others might see as a drawback.

The Thule Aion Carry On Spinner is a well-designed carry-on that suits travelers looking for durability and ease of use. It meets most airline size requirements with dimensions of 13.8 x 9.1 x 21.7 inches and offers a 35-liter capacity, which is spacious enough for short trips. Weighing about 3.15 kg (7 lbs), it’s a bit heavier than some soft backpacks but reasonable for a hard-shell spinner. The material is a standout feature—made from 100% recycled, bluesign approved polyester with a waxed canvas finish, it’s water-resistant and eco-friendly, though the unique fabric may show slight color variations or marks from the start, which some might find part of its charm.