Travelling with a hiking backpack as a carry-on bag is an increasingly popular option among adventurous travellers. This travel backpack combines the convenience of hand luggage with the versatility needed for hiking once you reach your destination. In this comprehensive guide, we’ll look at the size and weight limits to observe when flying, the differences between the various types of luggage, including backpacks and suitcases, and we’ll answer frequently asked questions about carry-on backpacks.
Backpack size and weight: what are the limits?
Each airline imposes maximum size limits for carry-on luggage, usually expressed in centimetres (height × width × depth). As a general rule, many airlines limit cabin bags to around 55 x 35 x 25 cm. If you’re looking for a versatile backpack with an urban look, the Eastpak Padded Double is a great example with its dimensions of 47 x 28.5 x 21 cm.
Others use a slightly different standard, such as 55 x 40 x 20 cm, with these measurements including all pockets, wheels, or handles. Your carry-on backpack must stay within these limits to be accepted in the cabin. Exceeding the size by just a few centimetres may result in your bag being placed in the hold. With dimensions of 40 x 30 x 18 cm, the Eastpak Padded Pak'r backpack is a versatile choice available in a wide range of colours. The Eastpak Day Pak'r has the same dimensions and features side pockets suitable for holding a water bottle.
The same applies to the weight of the bag. In general, the maximum weight allowed in the cabin ranges between 7 kg and 12 kg, depending on the airline. It’s therefore important to weigh your backpack once packed to ensure it doesn’t exceed the limit. Tip: if you’re slightly over the weight allowance, consider wearing your heaviest items (hiking boots, jacket) to lighten the bag when checking in.
Be particularly careful and check the exact size requirements of the airline you’ll be flying with. For instance, the Cabaïa Mini, Medium, and even Maxi models are generally accepted.
20L, 30L or 60-litre hiking backpack as carry-on
When it comes to backpack size, keep in mind that the vast majority of 20-litre to 40-litre backpacks are generally within the cabin luggage size limits. For example, a 30L hiking backpack usually poses no problem, whereas a 60L hiking backpack is almost always too large to be accepted. The volume in litres gives a rough idea but always check the actual measurements. A 50L or 60L pack often exceeds 55 cm in height when full, going beyond standard size guidelines. In 16L or 25L versions, the Eastpak Floid backpacks are practical and comfortable to carry.
Tip: measure your backpack (height, width, depth) when it’s fully packed. Compare this to your airline’s size limits. Don’t forget to include any external pockets or the back height if the bag is stuffed. If your backpack has external straps or attachments (for a tent, sleeping mat, poles), make sure they don’t exceed the allowed size—consider removing or storing them inside during the flight.
Airline-specific requirements
It’s essential to check the specific requirements of each airline you’re flying with, as carry-on baggage policies can vary significantly. If your journey involves several flights with different carriers, make sure your bag complies with the most restrictive policy among them.
Indeed, each airline sets its own maximum size and weight limits, and these rules can change at any time. It is your responsibility to verify this before departure: airlines may update their conditions, and a bag that was previously accepted may no longer be allowed if the regulations have changed.


Backpack, travel bag or cabin suitcase?
Any luggage that meets airline standards can theoretically be used as a carry-on: a wheeled cabin suitcase, a dry bag, a soft travel bag such as a duffel, or a backpack. Each has its pros and cons:
- Hard-shell cabin suitcase: this classic format (often a small four-wheeled suitcase) is easy to organise and provides good protection for your belongings. On the downside, it tends to be heavier when empty, less flexible in tight spaces, and not very practical for walking long distances or across uneven terrain.
- Soft travel bag: this includes duffel bags, sometimes equipped with shoulder straps. It’s lightweight and adaptable (fits easily into tight spaces), but less comfortable to carry on your back unless it has a proper carrying system.
- Backpack: backpacks are very practical for active travellers. They strike a good balance between protection, mobility and weight. A backpack can often be stowed overhead or under a seat more easily than a hard-shell suitcase.
Why travel with a backpack as carry-on luggage?
Choosing a carry-on backpack offers many advantages for travellers, especially if you plan to go hiking at your destination:
- Mobility and freedom: a backpack keeps your hands free and is easy to carry anywhere – whether in airports, on public transport, or along trekking trails. It’s the best way to stay mobile without being burdened by a suitcase.
- Time and money saving: travelling with cabin luggage only means you don’t have to check in a hold bag. You save on additional baggage fees (especially with low-cost airlines) and avoid waiting at baggage reclaim.
- Security for your belongings: keeping your bag with you in the cabin reduces the risk of it being lost or delayed. Your essential items stay within reach and under your supervision.
- Versatility at your destination: a cabin-size hiking backpack can double as your trekking pack once you arrive. For example, if you’re heading out on a multi-day trek, your hiking backpack used as carry-on can go straight with you on the trail – it’s immediately useful, unlike a small hard-shell cabin suitcase.
- Flexibility: unlike a hard suitcase, a backpack is soft and can compress slightly to fit into compartments or sizing frames. If it’s not fully packed, it’ll be easier to stow in an overhead locker or under a seat.
The Dakine Heli Pack is a compact backpack whose dimensions generally comply with airline requirements. The same applies to the Dakine Heli Pro, including the Heli Pro 20L version.
Tips for travelling with a backpack as cabin luggage
To make the most of your travel experience with a carry-on backpack:
- Always check before departure: as mentioned earlier, this is crucial – visit your airline’s official website a few days before your flight to confirm the permitted dimensions and weight.
- Wear your bulkiest clothing: travel in your heaviest or largest items (jacket, walking boots, etc.). Not only will this reduce the weight in your pack, but it also frees up space inside. You can always take off your jacket once on board.
- Keep essentials easily accessible: keep important items (documents, money, electronics, empty water bottle, etc.) within reach – either in a top pocket of your pack or in a small daypack if allowed as an accessory. This way, you won’t have to unpack everything just to find your passport at security.
- Be mindful of liquids and prohibited items: carry-on luggage must comply with security regulations. That means liquids under 100 ml in a sealed bag, and no knives or metal tools in your bag. A hiking backpack might contain a forgotten penknife or tent pegs in a pocket – double-check before you leave to avoid having anything confiscated.
- Be prepared for unexpected hold check-in: even if your bag complies with all the rules, it might still be placed in the hold at the last minute on a full flight due to limited cabin space. In that case, make sure to remove anything fragile or valuable (camera, documents) and keep it with you in the cabin. Tip: consider bringing a small foldable bag to carry your valuables if your main backpack is taken away.
Frequently asked questions about cabin backpacks
How do I know if my backpack is allowed in the cabin?
To find out if your backpack will be accepted as cabin luggage, the first step is to check its exact dimensions (measure it yourself or refer to the manufacturer’s label) and compare them to the limits set by your airline. Make sure that the packed weight doesn’t exceed the maximum allowed. Visit the airline’s website to confirm the permitted dimensions and, if your bag is close to the limit, consider contacting their customer service in advance.
Can a 55L backpack be used as cabin luggage?
In terms of volume, 55 litres generally exceeds the usual carry-on capacity. A fully packed 55L backpack is likely to go beyond the permitted dimensions – it’s often too tall or too thick.
Are hiking backpacks allowed on flights?
Yes, hiking backpacks are allowed on planes as long as they meet the airline’s cabin baggage requirements. There is no rule banning backpacks in the cabin; the regulations focus solely on size, weight, and contents (for security reasons). So a hiking backpack that meets the size and weight criteria will be accepted like any other type of hand luggage. Many hikers travel by plane using their trekking backpack as carry-on. Just make sure it doesn’t contain any items banned in the cabin (e.g. knife, trekking poles – these often need to go in the hold as they’re considered potential hazards). Also, make sure to tighten or secure any loose straps so they don’t get caught during boarding or when stowing the bag. In short, a hiking backpack suitable for carry-on is simply one that meets the airline’s size and safety requirements – its shape is not an issue.
What kind of bag is allowed in the cabin?
Any bag is allowed in the cabin as long as it meets the airline’s size and weight criteria. This can be a backpack, a suitcase, a sports bag... The type or model doesn’t matter – what counts are the dimensions and weight. So a cabin-sized bag might be a small suitcase, a soft travel bag, or a backpack. Remember: a bag permitted in the cabin is simply one that respects the cabin size limits and doesn’t contain any prohibited items.
The best travel backpacks at Glisshop
Travelling with a hiking backpack as your carry-on is perfectly doable – and very practical for those who want to travel light and hit the trail straight away. All you need to do is choose the right backpack, pack smartly, and check the specific rules of each airline you’ll be flying with. Browse our site now and discover our wide selection of backpacks to get ready for your next adventure.