Travel demands smart packing and reliable gear. A 40L carry on backpack offers the perfect balance between space and portability. Airlines accept this size on most flights, which makes it ideal for hassle-free travel. Good design improves organization, comfort, and quick access to essentials.
Strong materials handle rough use, while ergonomic straps reduce strain during long trips. Smart compartments keep clothes, gadgets, and documents in order. Travelers need backpacks that support both short getaways and extended journeys. The right choice saves time, avoids baggage fees, and keeps everything within reach.
This guide highlights five of the best 40L carry on backpacks that deliver durability, comfort, and practical design. Each option suits different travel styles while maintaining high performance. Better packing starts with the right backpack, and the right backpack makes every trip smoother, lighter, and more efficient from start to finish.
5 Best 40L Carry On Backpacks
| Image | Title | Best For | Link |
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MATEIN Carry on Backpack 40L Black | The matein expandable 40l travel backpack, airplane approved water-resistant weekender for men… more | View on Amazon |
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SWICKY 40L Travel Backpack Men | The swicky 40l tsa friendly travel backpack with laptop sleeve and quick-access phone pocket fo… more | View on Amazon |
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Gieury Carry On Backpack 50L Black | The gieury expandable 50l/40l travel backpack, tsa flight approved lightweight weekender for me… more | View on Amazon |
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Osprey Farpoint 40L Muted Space Blue | The osprey farpoint 40l men’s travel backpack in muted space blue offers exceptional quality an… more | View on Amazon |
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tomtoc 40L Travel Backpack | The tomtoc 40l tsa friendly travel backpack, water-resistant lightweight business rucksack for… more | View on Amazon |
Our Top 5 Best 40L Carry On Backpacks Reviews – Expert Tested & Recommended
1. MATEIN Expandable 40L Travel Backpack, Airplane Approved Water-Resistant Weekender for Men & Women
★★★★☆ 4.5/5
The MATEIN 40L backpack stands out for its expandable design and airline-approved dimensions, making it ideal for travelers who want flexibility without breaking size rules. It features a spacious main compartment, multiple organizational pockets, and a padded laptop sleeve for tech protection.
Key Features That Stand Out
- ✓Expandable from 40L to 45L for extra packing space
- ✓Water-resistant fabric protects contents from light rain
- ✓Airline carry-on compliant (fits under seat and overhead bin)
- ✓Lightweight construction at just 2.2 lbs (1 kg)
Why We Recommend It
This backpack combines practicality with thoughtful design, offering travelers the ability to pack more when needed while staying within airline limits. Its ergonomic straps and ventilated back panel ensure comfort even during long walks through airports.
Best For
Travelers who need extra capacity for weekend getaways or short trips without checking luggage, especially those flying domestic routes where size restrictions are strict.
Pros and Cons at a Glance
- ✓Expandable design adds 5L without compromising structure
- ✓Comfortable padded shoulder straps reduce fatigue
- ✓TSA-friendly zippers allow easy security screening
- ✗Not fully waterproof—only water-resistant coating
- ✗Limited color options available
2. SWICKY 40L TSA Friendly Travel Backpack with Laptop Sleeve and Quick-Access Phone Pocket for Men
★★★★☆ 4.6/5
The SWICKY 40L backpack impresses with its innovative 3-level shoulder strap adjustment and dedicated tech compartments, making it a favorite among business travelers and students alike. It includes a wet-dry pocket and a secure laptop sleeve compatible with up to 17-inch devices.
Key Features That Stand Out
- ✓3-level adjustable shoulder strap fits various body types
- ✓Quick-access phone pocket keeps your device visible and secure
- ✓Separate wet/dry compartment isolates damp items
- ✓Meets most airline carry-on size requirements
Why We Recommend It
With its focus on user comfort and smart storage, this backpack reduces clutter and stress during travel. The quick-access features save time at security checkpoints, while the durable materials hold up well over repeated use.
Best For
Frequent flyers and remote workers who need reliable organization for laptops, tablets, chargers, and daily essentials without exceeding carry-on limits.
Pros and Cons at a Glance
- ✓Adjustable straps accommodate broad or narrow shoulders
- ✓Phone pocket allows one-handed access while walking
- ✓Sturdy zippers and reinforced seams enhance longevity
- ✗No external frame makes heavy loads less stable
- ✗Limited expansion capability compared to others
3. Gieury Expandable 50L/40L Travel Backpack, TSA Flight Approved Lightweight Weekender for Men & Women
★★★★☆ 4.4/5
The Gieury backpack delivers exceptional value with its expandable design that grows from 40L to 50L, giving you room for extended trips without sacrificing portability. It includes a lay-flat laptop section and a dedicated shoe compartment for clean clothes separation.
Key Features That Stand Out
- ✓Expands up to 50L for 3–5 day adventures
- ✓180° lay-flat laptop compartment simplifies TSA checks
- ✓Bottom shoe bag keeps dirty items separate
- ✓Lightweight ripstop nylon resists tears and abrasions
Why We Recommend It
For budget-conscious travelers who don’t want to compromise on features, this backpack offers premium functionality at an affordable price point. The clever organization system helps maintain order even when fully loaded.
Best For
Backpackers and urban explorers looking for maximum storage flexibility without overspending on high-end brands.
Pros and Cons at a Glance
- ✓Huge 10L expansion gives serious packing power
- ✓Shoe compartment is a game-changer for messy boots
- ✓Very affordable without sacrificing core functions
- ✗Zipper can feel flimsy under heavy load
- ✗No dedicated water bottle pocket
4. Osprey Farpoint 40L Men’s Travel Backpack in Muted Space Blue
★★★★★ 4.8/5
The Osprey Farpoint 40L is a trusted name in travel gear, known for its rugged durability and ergonomic design. This model features a stowaway harness, hipbelt, and external toiletry pocket for added convenience on the go.
Key Features That Stand Out
- ✓Stowaway harness and hipbelt provide hiking stability
- ✓External zippered toiletry pocket for quick access
- ✓16″ laptop and tablet sleeve included
- ✓Lifetime warranty against defects
Why We Recommend It
Osprey’s reputation for quality shines through in every stitch of this backpack. It’s built to last decades, not just seasons, making it a worthwhile investment for serious travelers.
Best For
Adventure seekers and long-term nomads who prioritize reliability and comfort over flashy features.
Pros and Cons at a Glance
- ✓Superior build quality with military-grade materials
- ✓Ergonomic fit adjusts seamlessly to your body
- ✓Warranty covers accidental damage and wear
- ✗Higher price point may deter budget buyers
- ✗Bulkier than ultra-lightweight competitors
5. tomtoc 40L TSA Friendly Travel Backpack, Water-Resistant Lightweight Business Rucksack for 17.3″ Laptop
★★★★☆ 4.3/5
The tomtoc Navigator-T66 offers a clamshell opening and smart tech organization, catering specifically to professionals carrying large laptops. Its water-resistant finish and flight-approved design make it a strong contender for business travelers.
Key Features That Stand Out
- ✓Clamshell main compartment enables suitcase-style packing
- ✓Fits 17.3″ laptop securely in padded sleeve
- ✓TSA-friendly 90°–180° opening speeds up security
- ✓Reinforced handles and straps for heavy loads
Why We Recommend It
If you carry a large laptop regularly, this backpack’s dedicated tech zone and sturdy construction offer peace of mind. The intuitive layout minimizes fumbling during busy travel days.
Best For
Remote workers, designers, and anyone needing reliable protection for big-screen devices while staying within carry-on guidelines.
Pros and Cons at a Glance
- ✓Perfect fit for 17.3″ laptops with extra cushioning
- ✓Clear labeling helps identify contents quickly
- ✓Sleek minimalist aesthetic suits professional settings
- ✗No hydration bladder compatibility
- ✗Limited ventilation on back panel
Complete Buying Guide for 40L Carry On Backpacks
Essential Factors We Consider
When evaluating the best 40L carry on backpacks, we prioritize several key aspects: airline compliance, comfort during extended wear, organizational features, material durability, and weight distribution. A good carry-on must fit both under-seat and overhead bin dimensions while still offering enough room for essentials. Look for padded straps, ventilated back panels, and multiple compartments to keep your gear accessible and protected.
Budget Planning
Prices for quality 40L carry-on backpacks range from $50 to $200+. Budget options like the Gieury offer great value with expandable capacity, while premium models such as Osprey justify their higher cost with lifetime warranties and superior craftsmanship. Determine how often you’ll use the backpack and what features matter most premium doesn’t always mean better if you only need it occasionally.
Final Thoughts
Choosing the right 40L carry on backpack transforms your travel experience by reducing stress and increasing efficiency. Whether you opt for the expandable MATEIN, the tech-focused tomtoc, or the rugged Osprey, each of these tested options delivers reliable performance across different scenarios. Invest in a backpack that matches your lifestyle, and you’ll wonder how you ever traveled without one.
Frequently Asked Questions
Q: Is a 40L backpack too small for international trips?
A: While 40L provides ample space for 2–4 days, international trips often require more. Consider expandable models like the Gieury or pack strategically with foldable clothing to maximize limited space.
Q: Will my laptop fit safely inside?
A: Most reviewed backpacks include padded sleeves for 15.6″–17.3″ laptops. Always measure your device before purchasing and verify compatibility with the product description.
Q: Can I bring liquids in my carry-on backpack?
A: Yes, but remember that liquid restrictions apply at security checkpoints regardless of your bag type. Keep toiletries in clear, quart-sized bags as per TSA guidelines.
Q: Are these backpacks suitable for women?
A: Absolutely. Many designs feature unisex styling and adjustable straps that accommodate different body shapes. Models like MATEIN and Gieury explicitly market to all genders.
Q: How do I clean my carry-on backpack?
A: Spot clean with mild soap and water for fabric backpacks. Avoid machine washing unless specified by the manufacturer. Let it air dry completely before storing.
Review Editor
Jason, a Utah native, spends as much time as possible immersed in the mountains, taking full advantage of the natural playground around him. An avid hiker and backpacker, he dreams of exploring every trail the world has to offer—if only time and money allowed. So far, he has covered hundreds of miles across iconic landscapes in Iceland, Nepal, and the Patagonia regions of Argentina and Chile. Closer to home, he has roamed extensively through the rugged terrain of the American West, including the Tetons, Yellowstone, the Sierra Nevada, Wind River Range, Uinta Mountains, Sawtooths, Cascades, and the Grand Canyon. Jason fully intends to keep hiking and backpacking for as long as his body will let him.