Airline Carry-On Rules, Decoded
There is no universal carry-on size. 22 x 14 x 9 inches is American, Delta, Alaska, and JetBlue's number — not a global standard. Southwest and Frontier allow larger bags; Spirit allows a differently-shaped one; nearly every international carrier caps smaller. Our flagship reference is The Carry-On Size Table — verified carry-on and personal-item limits for 15 major airlines, each row cited to that airline's own policy page.
Most "best carry-on" roundups repeat one brand's marketing size and call it universal. It isn't: wheels and handles count in every airline's stated dimensions, Spirit and Frontier charge for a carry-on on every fare tier (not just the cheapest one), and a bag sized for U.S. domestic flying can get gate-checked in Europe. Start with the table below, then use our guides to pick a bag that survives your actual itinerary.
The Carry-On Size Table
Verified dimensions and weight limits for 15 major airlines, cited row by row.
Flagship dataset →
Universal-Fit Carry-On Picks
Bags sized to clear even Ryanair, Spirit, and the strictest international sizers.
5 picks →
Best Family Checked Luggage
Sized to the 62 linear-inch / 50 lb standard without wasting your weight allowance.
5 picks →
Best Travel Accessories
Packing cubes, scales, and trackers that solve a real travel-day problem.
5 picks →
The claims worth decoding first
How we work
We're a research-based site: every row in our airline size table is checked directly against that airline's own published baggage policy, not aggregated from third-party luggage-brand charts. We explain tradeoffs plainly, always name a downside, and never guarantee a specific bag will clear every gate sizer — gate agents have final discretion. Read our full methodology →