Lost Luggage? Here's Exactly What to Do

The belt turns. Again. And again. One by one, strangers peel away with their suitcases until you're the only person left in the arrivals hall, staring at a rubber carousel that's spinning empty. If you're googling lost luggage what to do right now, take a breath — most "lost" bags aren't actually lost. They're delayed, misrouted, sitting in some airport's back room waiting to be matched with their owner. What you do in the next hour is what matters. This guide walks you through it, step by step, in order.

Step 1: Don't Leave the Airport — File the Report First

This is the single most important thing in this whole article: do not leave the airport without filing a report. Even if you're exhausted and your ride is waiting. Everything else — tracking, compensation, insurance — depends on this one step.

Head to your airline's baggage service desk, usually right there in the arrivals hall near the carousels. Tell them your bag never showed. They'll open something called a Property Irregularity Report — the PIR. You'll fill it out together: flight number, contact details, and a description of the bag (brand, color, size, distinctive straps or stickers). Be specific. "Black Samsonite, 28-inch, hard shell, red luggage strap" finds its way home faster than "black suitcase."

The agent will hand you a file reference number — typically a 10-character code like LHRBA12345. Guard this like a boarding pass: it's the key to tracking your bag online, calling about your case, and filing for reimbursement later. Photograph it, the form, and the agent's name or desk. If the desk is unstaffed (it happens at odd hours), call the airline's baggage line right there from the terminal, and note the time.

Before you walk away, confirm the local address where the bag should be delivered (hotel name and room number, or your home address) and a phone number where you can actually be reached. Double-check the digits — bags get "found" but never delivered because of a transposed phone number.

Step 2: Understand How the Airline Tracks Your Bag

Once your PIR is in the system, your bag becomes a case in a global tracing network called WorldTracer, run by aviation IT company SITA and used by around 400 airlines across roughly 2,000 airports.

When you checked in, the agent stuck a tag on your bag printed with a barcode called a "license plate" — a unique 10-digit code linked to your booking. It gets scanned at key points: check-in, the sorting hall, the baggage cart, the aircraft hold. WorldTracer constantly compares your missing-bag description from the PIR against every "found" bag logged anywhere in the world — wrong airport, wrong belt, tagged incorrectly. When descriptions and tag scans line up, you get a match.

Most of the time, this works fast. The majority of delayed bags are located within 24 to 48 hours — usually the bag just missed a tight connection or ended up on the wrong flight. Once found, the airline gets it to you, typically free courier delivery to your hotel or home.

You can follow along yourself. Most major airlines let you enter your PIR reference number on their website or app to watch the case move: "tracing," "located," "out for delivery." Not real-time, but far better than sitting in the dark.

Step 3: Handle the First 24–72 Hours

So you've filed the report and you're standing in your hotel lobby with no clean clothes. What now?

First, don't panic-buy a whole new wardrobe. The airline owes you reasonable interim expenses while the bag is missing — but "reasonable" has a definition, and your receipts will be scrutinized. Toiletries (toothbrush, toothpaste, deodorant), underwear, a basic change of clothes, maybe a phone charger if yours was in the bag — all fine. A designer jacket or luxury perfume? Not so much.

Keep every single receipt, and keep them itemized — claims departments want to see what you actually bought, not just a card statement. Snap a photo of each receipt the moment you get it; paper receipts fade, get washed, and vanish.

Check your case status once or twice a day, not every hour. If nothing moves after 24 hours, call the baggage line with your reference number and ask which station last scanned the bag. If you packed a Bluetooth tracker like an AirTag, tell the agent where it shows — staff genuinely use that information to speed up the match.

Lost Luggage What to Do: Claiming Your Compensation

Here's where knowing your rights actually pays. Airline baggage liability is governed by the Montreal Convention, an international treaty ratified by more than 140 countries. It covers virtually every international flight — and many domestic ones through national law.

The headline number: since 28 December 2024, the maximum the airline can owe you for lost, damaged, or delayed baggage is 1,519 Special Drawing Rights (SDR) per passenger — roughly US$2,000 or €1,800, depending on the exchange rate (up from the old limit of 1,288 SDR). Three things to understand about that figure:

It's a ceiling, not a payout. You get reimbursed for your actual, proven loss — receipts for essentials, the value of the bag and its contents — up to that cap. Nobody hands you two grand automatically.
It's per passenger, not per bag. One suitcase or three, the limit is the same. Families: each traveler has their own limit, so every family member with a delayed bag should file their own report.
Used items get depreciated. If your five-year-old laptop was in the hold, the airline pays its current value, not what you paid in 2021. Valuables in checked bags are a gamble.

On US domestic flights, a separate rule applies: the Department of Transportation caps liability at $4,700 per passenger (raised from $3,800 in January 2025). For an international itinerary, the Montreal Convention's SDR figure is the one that counts.

Delayed versus lost — the distinction matters. While your bag is delayed, the airline reimburses the reasonable essentials you bought while waiting. Still missing after 21 days? It's legally lost, and you can claim the full value of the bag and its contents with a detailed inventory: purchase dates, approximate values, supporting proof.

One most travelers don't know: under the DOT's 2024 automatic refund rule, if you paid a checked-bag fee and the bag was significantly delayed, the airline must refund the fee itself — automatically, not just if you complain. "Significantly delayed" means 12+ hours on domestic flights, 15 hours on shorter international flights, and 30 hours on international flights over 12 hours. Filing the mishandled-baggage report is what triggers it.

Mind the deadlines — they're strict. Bag arrives damaged? You have 7 days from receiving it to complain in writing. Delayed? The written claim is due within 21 days of the bag coming back. Miss these and the airline can reject your claim outright. Send everything in writing — email is fine — and keep copies.

What to Buy (and How to Get Reimbursed)

You're away from home, your stuff is somewhere in the system, and you need to get through a few days:

Buy the basics first: underwear, socks, a simple outfit, toiletries, any daily over-the-counter items. If you need specific medications, ask your doctor or pharmacist about an emergency supply — and keep that receipt too.
Keep receipts for everything related to the delay, and photograph them immediately. Paper receipts fade, wash, and vanish.
Submit in writing to the airline's baggage claims department — most have an online portal. Attach your PIR number, your receipts, and a short timeline: when you landed, when you filed the report, when the bag was returned (if it was).
Separate your claims. The interim-expense reimbursement and the bag-fee refund are different requests. Label them clearly so nothing gets "accidentally" folded into the other.

If the bag comes back damaged, photograph it immediately — bag, damage, tags — and file the damage complaint within those 7 days. Keep the bag until the airline has had a chance to consider inspection; throwing it away weakens your case.

How Travel Insurance Fits In

The airline is your first line of defense under the Convention. Travel insurance is the second — it covers gaps the airline doesn't. Most decent policies include two relevant benefits:

Baggage delay coverage — a fixed benefit (often $100–$500) once your bag has been delayed beyond a threshold, commonly 6–12 hours. Usually paid quickly, with less paperwork than an airline claim.
Baggage loss coverage — pays for the bag and contents up to a plan limit (commonly $500–$2,500+ per person), covering what the airline's depreciation math leaves on the table.

File with the airline first — insurers will ask for the airline's reference number and settlement details — then claim the remainder from your insurer. Watch your policy's claim deadline; some want notice within 20–90 days. And next time, actually read the baggage section: the cheapest plan often has the weakest baggage benefit.

Stop It Happening Again: 7 Ways to Protect Your Bag Next Time

Could you have prevented this? Maybe — some mishandling is pure bad luck. But travelers who rarely lose bags tend to do the same things:

Drop a Bluetooth tracker in the bag. An AirTag or Tile won't stop a misroute, but it shows where the bag actually is — and that detail often speeds up recovery.
Photograph your bag before every trip. A photo of the bag and its contents turns the PIR description from a guess into evidence — and backs up any insurance claim.
Keep your claim sticker. The little stub from the check-in tag carries the 10-digit license-plate number. That stub is your link to the bag if the whole tag tears off in the system.
Remove old tags and barcodes. Old stickers from previous trips confuse automated scanners and cause misroutes. Peel them off before you fly.
Put your name and phone number INSIDE the bag on a card — not just dangling outside, where tags get ripped off.
Carry on what you can't afford to lose. Medications, valuables, one full change of clothes, chargers, and anything you need within 24 hours should never leave your sight.
Declare valuable contents at check-in. You can raise the Montreal Convention limit with a "special declaration of interest" at check-in for a small supplement — worth doing for expensive kit, but too late once the bag's gone down the belt.

Frequently Asked Questions

How long before a delayed bag is officially considered lost?
21 days. If your bag hasn't been returned within 21 days of the mishandling report, the Montreal Convention classifies it as lost — and that's when you file the full contents claim instead of just interim expenses.

How much compensation can I actually get?
Up to 1,519 SDR per passenger (roughly US$2,000) on international flights, or up to $4,700 per passenger on US domestic flights. That's a cap on your proven loss — not an automatic payout.

Should I buy essentials right away, or wait?
Buy what you need — the airline should reimburse reasonable interim expenses like toiletries and basic clothing while the bag is delayed. Keep every receipt and submit the claim in writing.

Does travel insurance really cover lost luggage?
The airline is primarily liable under the Montreal Convention, but depreciation and caps can leave you short. Travel insurance typically adds a quick fixed payment for delays (often after 6–12 hours) plus cover for lost contents. File with the airline first, then claim the remainder from your insurer.

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