IS FINDING a suitcase that can fit in an overhead cabin compartment, while also squeezing in everything you need it to, a mission impossible?
No - although it can most certainly feel like one. Lucky for you, we've rounded up our top picks for the best carry-on luggage to buy online now.
These days, you'll find rules about sizing and luggage allowance spelled out on every airline website.
Many brands also tell you whether their bag size is compliant with a range of airlines, but it's always advisable to double-check with the airline you're planning to fly with most regularly before you buy, as the differences can come down to a few centimetres.
There's no one-size-fits-all model for the best carry-on luggage: from stylish duffle bags to four-wheeled cases to well-organised rucksacks, you can find a range of options to suit your travel needs.
When it comes to finding the right carry-on bag for your travels, size is only part of the equation.
You'll want a piece of luggage with plenty of compartments, to keep your tech safe and your passports (and snacks) within easy reach. It doesn't hurt if it looks good, too.
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1. Best wheeled carry-on luggage case: Flight Knight ABS Hard Case
- (AD) Flight Knight Lightweight ABS Hard Case, £27.99 from Amazon - buy here
For a suitcase with size-compatibility at over 23 airlines, including BA, easyJet and Iberia, this hard shell design measures 56cm x 45cm x 25cm, with an impressive 41l capacity.
The carry-on features a three-button telescopic handle, eight-wheel design with 360-degree swivel wheels and an anti-scratch, water-resistant ABS shell.
Ticks every box - 'great design, durable and lightweight', in the words of one reviewer. Choose from a range of colours and finishes.
2. Best carry-on rucksack: AmazonBasics Carry-On Travel Backpack
- (AD) AmazonBasics Carry-On Travel Backpack, £39.99 from Amazon - buy here
Some of the most effective carry-on bags aren't suitcases: rucksacks and holdalls work really well, too.
This travel backpack from AmazonBasics has garnered rave reviews, with its hardwearing polyester construction, internal laptop sleeve, zip-front pocket with internal compartments for travel docs and expandable storage space.
The roomy design easily fits clothing, and padded sleeves, a waist belt and sternum strap provide ample support. Three exterior handles and adjustable straps give you plenty of options when it comes to toting it around.
Fans have described it as 'superb' and the 'best bag ever'. It can easily carry 10kg of stuff.
3. Best budget carry-on luggage: it Luggage Soft Cabin Suitcase
You don't need to spend a fortune on a decent carry-on suitcase, as this design from IT luggage proves.
With two wheels and a retractable handle, this business-travel friendly suitcase has a 39l capacity, with a front zip pocket and internal pocket.
It can be used on airlines from TUI to easyJet, as well as RyanAir, which is notoriously tricky when it comes to carry-on sizing. For the price, it's sturdy and spacious enough.
4. Best carry-on duffle: Away The Everywhere Bag
Away has quickly become the luggage brand to own, but it's not just the wheeled carry-on suitcases that fans are raving about.
This duffle in water-resistant nylon is smart and spacious, with an interior pocket for a 15" laptop, umbrella pocket and outer zip for travel essentials.
It can fit a change or two of clothes for a weekend away, so works well as an overnight bag. Or, attach it to the top of your Away suitcase - it slips over the handle thanks to a stylish trolley sleeve.
Bonus: not only will it fit in the overhead compartment, but this design can go under the seat in front of you, too.
5. Best hard shell carry-on luggage: Aerolite Hard Shell Cabin Luggage
Aerolite's carry-on suitcase has a hard ABS shell and four 360-degree spinner wheels. With measurements of 55cm x 35cm x 20cm, it should comfortably get you on a range of airlines (including Ryanair, if you're willing to pay extra).
'The bag fits a lot. Wheels work nicely. Handle seems sturdy enough. Zips seem good quality (always something to look out for!) Love the colour," writes a reviewer.
6. Best carry-on luggage for a long getaway: Eastpak Tranverz S Black Denim
Eastpak's suitcase-on-wheels is a real favourite with travellers, and has a reassuring 30-year warranty for those who plan to use it regularly.
The stylish design measures a cabin-friendly 51cm x 32.5cm x 23 cm and is constructed in nylon with two wheels, a telescopic handle, compression and garment straps and a laptop sleeve.
Two zipped internal pockets and a TSA lock provide the perfect finish.
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This article and any featured products have been independently chosen by The Sun journalists. All recommendations within the article are informed by expert editorial opinion. If you click a link and buy a product we may earn revenue: this helps to support The Sun, and in no way affects our recommendations.