10 Best Carry On Backpacks 2026 in the United States

The Thule Landmark Backpack 40L is designed as a carry-on-sized travel backpack with a well-balanced 40-liter capacity, making it suitable for short trips or adventure travel. It weighs about 1.44 kilograms (roughly 3.2 pounds), which is relatively light for its size and capacity, helping reduce the load on your back during travel. The backpack offers good organization with six pockets and five compartments, including dedicated padded spaces for a 15" laptop and a 12.9" tablet, which is convenient for keeping electronics safe and accessible.

Its standout security features include the hidden CashStash compartment to protect money and passports, and LoopLocks that secure zipper pulls to deter theft, which is a plus for travelers concerned about pickpockets. The outer material is polyester, noted as lightweight but not water resistant, so it may not perform well in heavy rain without an extra cover. Comfort-wise, it uses basic straps, which may be sufficient for moderate carrying but might not offer the enhanced padding or ergonomic support found in more hiking-focused backpacks.

Durability should be reliable given the brand reputation and polyester build, but the lack of water resistance could be a limitation depending on your travel conditions. This backpack suits travelers looking for a sturdy, organized, and secure carry-on backpack with enough space for essentials, especially those who prioritize theft protection. For travelers expecting frequent wet weather or requiring extra padded comfort for long hiking days, other options might be more appropriate.

The MATEIN Mens Backpack is a strong choice for travelers looking for a versatile carry-on bag. Its expandable design offers generous packing space, meeting airline size limits while letting you fit extra items when needed. Weighing just 13.7 ounces, it’s very lightweight, easing the burden when moving through airports or on day trips. Comfort is well addressed with padded, adjustable shoulder straps, a ventilated back panel, and a sternum strap to help distribute weight more evenly, which is great for longer wear. The backpack converts neatly between a traditional carry-on style and a briefcase look by hiding the shoulder straps, adding flexibility for different travel situations. Organizationally, it includes a front pocket for small essentials like phones and earphones, a large main compartment with compression straps to keep items secure, and multiple grab handles for easy handling.

Durability is impressive due to its water-resistant polyester fabric, sturdy zippers, and solid stitching, which should hold up well under various travel conditions. A luggage strap also lets you attach it securely to a suitcase handle, simplifying transit. On the downside, while the backpack is large, its expandable feature might add extra bulk that could be tricky in very tight overhead bins. Also, it’s designed as a unisex bag but the styling and color options may not suit everyone’s taste. This backpack is well suited for frequent travelers, weekend adventurers, or anyone wanting a practical, lightweight carry-on with smart features and good durability.

The Thule Aion Travel Backpack 40L is a solid choice for travelers needing a carry-on backpack that balances size and organization well. Its 40-liter capacity is roomy enough for a few days' worth of gear while still meeting most airline carry-on size rules, making it convenient for frequent flyers. At about 1.45 kg (3.2 lbs), it strikes a good balance—not too heavy but sturdy enough for travel. Comfort is enhanced by the option to pair with the Thule Aion Sling Bag as a supportive hip belt (sold separately), which can help distribute weight better on longer trips.

The backpack uses durable materials like bluesign approved recycled polyester and waxed canvas with water-resistant coating, protecting your belongings from light rain and wear. Organizationally, it shines with multiple pockets including a padded compartment for laptops up to 17 inches, internal compression straps to keep items secure, a dedicated water bottle pocket, and a removable TPU rolltop bag that isolates items prone to odor or moisture. However, the waxed canvas may show slight marks or color variances out of the box, which could be a concern if you prefer pristine appearance.

The bag’s lack of stretch fabric means it won't flex much when packed full, so planning what to carry is important. While it is hand-wash only, this trade-off supports its sustainability focus. This backpack suits travelers who want a well-organized, durable, and eco-friendly carry-on with thoughtful features, though those seeking ultra-lightweight or highly flexible packing might look elsewhere.