More than half of backpacks marketed as "carry-on" don't actually fit the strictest budget airline size restrictions, according to new data that analyzed 50 popular travel packs against Ryanair, EasyJet, Spirit, and US domestic carrier requirements.
The comprehensive comparison, shared on r/onebag, reveals that 52% of supposedly carry-on compliant bags fail Ryanair's 55×40×20cm sizer—including community favorites like the Osprey Farpoint 40, Peak Design 45L, GoRuck GR2, and Tortuga Pro 40L.
The failure point? Almost always depth.
Ryanair's baggage policy is among the strictest in the industry, enforcing the 20cm depth limit that many "carry-on" bags exceed by 2-5 centimeters. While some travelers report squeezing oversized bags through gate checks, the risk of forced check fees—currently €70 at the gate—makes compliance crucial for budget travelers.
But dimensional compliance tells only part of the story. The data uncovered massive weight disparities that directly impact packing capacity.
The GoRuck GR2 weighs 5 pounds empty. On Ryanair's 10kg (22 lbs) personal item limit, the bag alone consumes 23% of the weight allowance before a single item goes inside. By contrast, the Gossamer Gear Vagabond at 1.25 pounds uses just 5.7% of the allowance—a 17% difference in usable packing weight.
For travelers doing the math on what fits in a carry-on budget, that differential matters. An extra 3.75 pounds of capacity translates to several additional clothing items, toiletries, or tech gear.
Warranty coverage also varies wildly across similarly-priced bags. Bellroy charges $289 for bags with 3-year warranties. Tropicfeel asks $239 for 2-year coverage. Meanwhile, Osprey offers true lifetime guarantees on $200 bags. The value proposition appears inconsistent across the market.
Airline carry-on policies continue fragmenting, with budget carriers tightening restrictions while premium airlines maintain more generous allowances. The result: bags that work perfectly on or domestic flights fail European budget carriers entirely.
