The best carry-on bag is the one you never have to check. This sounds obvious until you start specifying what it actually requires: dimensions that fit every major airline's overhead bin including the low-cost carriers whose measurements are most punishing; a weight that doesn't count against you before you've packed anything; a structure that holds its shape without being so rigid that it can't absorb the flex of a packed bag; wheels that move in four directions without wobbling; a handle that extends smoothly and collapses completely; and a price that, while not negligible, doesn't make you anxious every time it goes through an airport. I tested twelve bags against these criteria over four months and fourteen trips. Here is what I found.
What We Tested
The twelve bags ranged in price from £180 to £850 and in provenance from mass-market travel brands to small-batch luggage makers who care about things like corner reinforcement with a devotion that borders on the religious. All were tested on the same circuit: two budget airline flights in Europe, one long-haul business-class journey, three overnight trains, and one trip that involved a connecting transfer so tight that the bag needed to move at speed through two terminals without complaint.
I packed each bag identically: four days of clothing for a mixed urban and outdoor itinerary, a laptop, toiletries in a separate pouch, and the specific book I was reading at the time, which happened to be a hardback of considerable size and which I used deliberately as a packing stress test. Bags that couldn't accommodate it alongside everything else were marked down accordingly.
The best carry-on is the one you never have to check. Specifying what that actually requires takes longer than you'd expect.
The Winner: Horizn Studios M5
The Horizn M5 won on the strength of three things: its dimensions are fractionally smaller than the stated maximum for every carrier I tested, which provides a margin of safety when the bag is fully packed and expands slightly; its wheels are mounted on a mechanism that handles uneven surfaces — cobblestones, gaps in terminal flooring, the raised threshold of a train carriage — without derailing or requiring active correction; and its interior organisation, while not elaborate, is exactly sufficient: a main cavity, a front compartment with a laptop sleeve, and nothing else competing for space.
The handle mechanism is the best of any bag I tested. It extends to three positions, each of which clicks firmly into place, and collapses with one motion rather than the two-handed operation required by several competitors. Over the course of four months and roughly forty thousand kilometres, this detail — which sounds minor — became increasingly significant. The bags whose handles required two hands to operate were subtly exhausting in a way that compounded across trips.
The Runner-Up: Away The Carry-On
The Away is the most widely reviewed carry-on in existence, which creates a credibility problem: any positive assessment risks looking like a confirmation of marketing rather than independent judgment. The assessment stands regardless. The polycarbonate shell is genuinely hard-wearing — mine emerged from a flight on which the overhead bin had been closed on it with force looking exactly as it had before — and the compression system in the main compartment, which uses a zip-off mesh panel to compress the contents slightly, consistently allowed me to pack more than I expected without the bag losing its ability to close cleanly.
It lost to the Horizn on wheels, which are mounted in fixed-direction pairs rather than the 360-degree spinners of the M5, and on handle quality, where the Away's handle works well without quite matching the M5's precision. At its price point it represents the better value of the two. If you are buying one bag and the budget matters, buy the Away. If the budget is secondary and precision is what you want, buy the Horizn.
The One to Avoid
I won't name the specific brand, but one bag in the test failed so completely that the failure is worth describing. The wheels — marketed as "whisper quiet," a description that turned out to apply only to smooth floors at low speed — locked on the textured flooring of two separate airports and had to be carried. The handle extended to only one position. The exterior pocket, designed for easy access, opened in the overhead bin during turbulence on two separate flights, depositing its contents into the bin. At £340, it was the third-most-expensive bag I tested. Price, it is worth repeating, is not a reliable signal of quality in luggage.
