Key takeaways
- Always confirm the limit on the airline's own baggage or fare-rules page, not a third-party chart.
- Check the date a source was last reviewed; baggage policies can change with little notice.
- Rules can vary by fare, route, aircraft, and region even on the same airline.
- A dimensional fit result is a planning aid, not a promise of acceptance at the gate.
Start with the official source
Airlines publish baggage allowances on their own websites, usually under a baggage, cabin-baggage, or fare-conditions page. That is the authoritative number. Comparison sites and travel blogs can be useful for an overview, but they copy from each other and fall out of date, so treat them as a starting point and confirm against the airline.
When you open an official page, match it to your trip: the right airline, the right cabin (personal item versus carry-on), and ideally the right fare. The same airline can list different allowances for basic and standard fares on the very same route.
Read the last-checked date
Good baggage tools, including CabinFit, show when each rule was last reviewed and link to the official source. That date tells you how fresh the information is. A rule reviewed last week is more reliable than one reviewed a year ago, but neither replaces a final check against your ticket.
If a tool does not show a source or a date, be cautious. Undated figures may have been correct once and quietly drifted out of step with the airline's current policy.
Watch for what changes the rule
Baggage allowances are not a single global number. The same airline can apply different rules depending on several factors, so always read the conditions attached to the figure you find:
- Fare type — basic and saver fares often allow less than standard or flexible fares.
- Route and region — domestic, short-haul, and long-haul flights can differ.
- Aircraft — smaller regional planes may force larger cabin bags into the hold.
- Codeshare and connections — the operating airline's rules may apply, not the one you booked with.
- Weight as well as size — some airlines enforce a cabin-bag weight limit separately.
Why a fit result is not a guarantee
A tool like CabinFit compares your bag's dimensions against published limits. That answers one important question — does the bag match the size on paper — but it cannot promise acceptance. Final decisions at the gate can depend on cabin space, staff discretion, weight, fare conditions, and last-minute policy changes.
Use a dimensional check to rule out the obvious failures and pack with confidence, then confirm the current allowance with your ticket and the airline before you travel. Verification is a habit, not a one-time step.
Frequently asked questions
On the airline's own website, usually under a baggage or fare-conditions page. That is the authoritative source. Confirm the airline, the cabin type, and your fare, because allowances can differ within the same airline.
There is no fixed schedule. Airlines can update allowances, fees, and fare bundles at any time, sometimes with little public notice. That is why a last-checked date and a final confirmation against your ticket both matter.
Use them for orientation, not as the final word. Many charts copy each other and go stale. Always confirm the specific number against the airline's official page for your fare and route.
No. CabinFit compares your dimensions with published limits and links to the source, but it cannot guarantee acceptance. Gate decisions can also depend on weight, cabin space, staff, and current policy, so always verify with your airline.
CabinFit compares published dimensions only and does not guarantee airport acceptance. Always confirm with your airline before you travel.