Checked Baggage Allowances, Explained Properly

Priya Raghunathan · May 2, 2026 · 9 min read

Almost every argument at a check in desk comes from the same misunderstanding. The passenger has one number in mind, usually 23 kilograms, and the airline is applying a different rule entirely. Both parties think they are right, and in a sense both are, because two separate systems operate side by side across the world.

Piece concept and weight concept

The piece concept counts bags. You get a stated number of pieces, each with its own maximum weight and maximum linear dimensions. It is the default on routes touching the Americas and on most transatlantic traffic.

The weight concept counts kilograms in total. You may check as many bags as you like within a total allowance, subject to a per bag maximum for handler safety. It dominates across much of Asia, the Middle East and Africa.

Which concept applies to your ticket

1. Look at the baggage line on the e-ticket. It will say something like 1PC or 2PC for the piece concept, or 30K for the weight concept.
2. On a journey with several airlines, the most significant carrier rule usually determines the allowance for the whole itinerary, which is why a codeshare can carry an unexpected number.
3. The allowance shown at booking is the one that applies, so keep the confirmation rather than relying on the airline's general web page.
4. Status and cabin add to the base allowance, usually one extra piece or 10 to 20 extra kilograms.
5. Separate tickets mean separate allowances, and bags are usually not through checked.

What the fees actually cost

Airport prices are the highest price the airline sells. Prepaying online is normally 20 to 50 percent cheaper, and adding the bag during the original booking is cheaper again. The gap is deliberate: it moves the transaction away from the desk, where it costs the airline staff time.

Dimensions matter more than travelers expect

• Standard checked bag limit is 158 cm total, adding length plus width plus height including wheels and handles.
• Hard shell cases with protruding wheels frequently exceed this by two or three centimetres, which is enough to trigger a charge at a strict airport.
• Oversize items such as skis, golf bags, bicycles and musical instruments have their own categories and usually need to be declared in advance.
• Some aircraft, particularly regional turboprops, have hold door restrictions that prevent carriage of long items regardless of the fee paid.

Special items worth planning for

1. 01

   Sports equipment

   Book it as a specific item rather than as excess weight. Airlines with a sports category almost always charge less for it than for a generic extra bag.

2. 02

   Musical instruments

   Small instruments can travel in the cabin, and larger ones may need an extra seat. Both need to be arranged before the day of travel.

3. 03

   Mobility equipment

   Wheelchairs and mobility aids are carried free of charge under most national rules and international conventions. They do not count against the allowance.

4. 04

   Lithium batteries

   Spare batteries and power banks must travel in the cabin, never in the hold. Watt hour limits apply and are enforced.

5. 05

   Fragile and valuable items

   Liability for checked baggage is capped under the Montreal Convention at roughly 1,288 SDR per passenger. Anything worth more than that belongs in the cabin or under separate insurance.

If a bag goes missing

1. Report it before leaving the baggage hall and obtain a Property Irregularity Report with a reference number.
2. Keep the baggage tag receipt, since it links the bag to your ticket in the tracing system.
3. Most bags are located within 48 hours through the global tracing network, and are delivered to your address at the airline's cost.
4. Reasonable interim expenses are reimbursable. Keep receipts and check the airline's stated daily limit.
5. A bag not found within 21 days is treated as lost, and the Montreal Convention limit applies to the claim.
6. Written claims for damage must be made within 7 days of receipt, and for delay within 21 days.