Before the gate, measure the whole bag.
A size label is a useful starting point, but it is not an airline approval. Airlines can set different limits by fare, route and aircraft. Check the current rules for every carrier on your itinerary before choosing or packing a bag.
1. Check the exact allowance
Look for the permitted outside length, width and depth, any weight limit, and whether your fare includes a cabin bag or only a personal item. A bag described as 20-inch may refer to a nominal size; it does not promise a match to your airline’s limits.
2. Pack the bag as you plan to travel
Soft bags change shape when filled. Add the clothes, shoes and small items you intend to take, close the zippers and fill the outside pockets. Measuring an empty, flattened duffel can understate the space it will occupy.
3. Measure the outermost points
Use a tape measure and a flat surface. Measure height from the floor to the highest fixed point, including wheels and non-retractable handles. Measure width across the widest part, then depth from the back to the fullest front pocket. Check each figure against the corresponding airline limit.
4. Check total weight
Weigh the packed bag if your airline has a limit. Remember that a luggage set contains separate pieces; the weight and dimensions for one case do not describe the entire set.
5. Leave a margin
A bulging pocket, a souvenir or a soft bag squeezed into a tight space can change the result. Keep a little space available and avoid relying on compressing an overfilled bag. Airline staff make the final decision about acceptance.
When listing measurements need clarification
Read the specification notes for the item you are considering. If a listing does not establish whether wheels and handles are included, ask us before making an airline-dependent decision. We do not guarantee universal carry-on or under-seat fit.