What happens to checked baggage after you drop it off

Explained simplyPublished 9 February 20264 min read

Luggage moving along a conveyor belt through a metal sorting hall behind the scenes at an airport

What happens to checked baggage after the desk takes it is six stages long, almost entirely automated, and over in about twenty minutes on a good day. Knowing the stages is useful because each one fails in a different way, and the failure decides whether your bag is two hours behind you or two days. Here is the journey, and the numbers on how often it goes wrong.

The six stages

Acceptance. The bag is weighed, a licence-plate barcode tag is attached, and the record is linked to you and your flight. The stub you are given carries the same number.
Screening. Every hold bag is security screened. Most pass automatically; a minority are pulled for a closer look, which is the first place a bag can fall behind its flight.
Sortation. Conveyors and scanners route the bag towards the right flight. A torn or unreadable label here sends it to manual coding, where a person reads it and re-enters it by hand.
Make-up. Bags gather at a stand or a carousel for the flight, and are loaded into containers or carts in the order the ramp wants them.
Loading and flight. The container goes into the hold. From here your bag is simply cargo with your name attached.
Arrival. Containers are unloaded, transfer bags are split from terminating bags, and the rest travel to the reclaim belt.

Between stages two and four the bag may be scanned half a dozen times. Those scans are why an airline can tell you a bag was loaded, and why it often cannot tell you anything after that.

How often it goes wrong

SITA's Baggage IT Insights report, published on 30 June 2026, is the industry's own audit. It counted roughly 24 million bags delayed, misrouted, damaged or lost during 2025, against a record five billion passengers, an improvement of 23 per cent on the year before. The cost to airlines was put at US$6.3 billion a year, or about US$260 per affected bag.

The single biggest cause is not the belt. Transfers accounted for 39 per cent of mishandling in 2025, down from 41 per cent, and the reason is timing: a connecting bag has to make a second sortation inside whatever minutes the schedule allows.

The recovery figures are more cheerful than the headline. SITA reported in December 2025 that 66 per cent of mishandled bags are reunited with their owner within 48 hours.

Where each stage fails

Stage	Typical failure	What you see
Acceptance	Old labels left on the bag	The bag follows last month's flight number
Screening	Pulled for manual inspection	The bag misses the flight and follows later
Sortation	Unreadable or torn tag	Delay while it is coded by hand
Make-up	Loaded on the wrong cart	The bag flies somewhere else entirely
Transfer	Connection too tight	The bag arrives on the next service
Arrival	Split to the wrong belt or held airside	It exists but nobody can say where

Why the reclaim belt is the slowest part

Arrival feels slow because it is the one stage with no automation to speak of. Containers have to be towed in from the stand, opened, and emptied by hand, and terminating bags have to be separated from transfer bags that are going straight back out. Several aircraft landing close together queue for the same belt and the same crew, which is why the wait after a smooth flight can be longer than the taxi in.

What you can actually control

Four things, and they are all before you hand it over. Strip old bag tags off, because scanners read them. Put your name and a phone number inside the case as well as on it. Build a connection with enough minutes in it that the bag has the same chance you do. And photograph the tag stub, because that number is the reference for every conversation afterwards.

Everything else is out of your hands, which is precisely why an independent source of information is worth having.

How Locata Tag fills in the gap

The airline's view of your bag is a series of scans, and the scans stop when the bag leaves a scanner. A Locata Tag keeps reporting after that, because it broadcasts to whatever Apple devices are nearby and they relay an encrypted position to your Find My app. In a terminal or a make-up area that means regular updates; in a sealed container in a hold it means nothing until the doors open, and it is worth being honest that a metal container is a poor place to be heard from.

The practical value is at arrival. If the belt stops and your bag is not on it, you can tell the desk whether the case is in that building, at the airport you departed from, or somewhere on a route neither of you expected, and that answer changes what they do next.

A Locata Tag is a Find My compatible tracker for iPhone and iPad only, on iOS 14.5 or later. IP67, a CR2032 that runs up to two years, 80–100 dB when you ring it inside about 60 m, and no Ultra Wideband arrow. Two in a box, under £15, which is one for the hold bag and one for whatever you carry on.

Frequently asked

How long should a bag take from desk to aircraft? Around twenty minutes in a well-run terminal, which is why airlines close bag drop long before the gate.

Does a tag stop my bag being mishandled? No. It changes what you know afterwards, not what the sorting system does.

Why do bags go missing on connections more than on direct flights? Because a transfer bag repeats the sortation and make-up stages at the second airport, inside the connection time, the stage SITA blames for 39 per cent of mishandling.

Words by Find My Tracker Updated 9 February 2026