Lost Luggage: What to Do at the Airport

Go straight to the airline’s Baggage Service Desk. Every airport has one, usually near the baggage carousels or just outside the customs exit. Look for signs reading “Baggage Service,” “Lost and Found,” or “Claims.”

Report it now — the clock starts when you leave. Some airlines impose tight reporting windows — American Airlines requires you to report a delayed bag within 4 hours of arrival on domestic flights. Leaving without a report can weaken your claim and, in some cases, eliminate it entirely. ^[3]

Have these items ready when you reach the desk:

• Boarding pass (paper or mobile)
• Baggage claim tag — the small sticker with a barcode attached to your ticket jacket at check-in
• Flight details — flight number, date, origin, destination, and any connections
• Bag description — type (hard case, duffel, backpack), color, brand, size, and distinguishing features (stickers, colored straps, monograms)
• Your contact information — phone number, email, and the address where you want the bag delivered

The agent will ask for a description of contents. Be as specific as you can. Clothing colors, electronics, distinctive items — these details feed directly into WorldTracer’s matching engine and help identify your bag if the tag has been damaged or separated.

The PIR is the official document that initiates the search for your bag. It’s an industry-standard form used by virtually all airlines, and the information you provide is entered into WorldTracer — a global tracking system operated by SITA and IATA, used by over 500 airlines at approximately 2,800 airports worldwide. ^[2]

Once filed, your bag becomes an AHL (Absent from Hall) record in WorldTracer. The system continuously and automatically matches your report against “on-hand” bags found at airports around the world. Matching criteria include your surname, bag tag number, routing, bag type, and contents description. ^[2]

You’ll receive a PIR reference number. It follows the format AAABBNNNNN — three letters for the airport code, two for the airline code, and five digits. For example: PHLDL19676 means Philadelphia airport, Delta Air Lines, tracking number 19676. ^[2]

Some airlines also let you file or supplement a PIR through their mobile app — American Airlines, Delta, and United all support this. But the in-person filing at the airport remains the fastest way to get your bag into the system.

Thorough documentation protects you at every stage — whether your bag shows up tomorrow or gets declared lost in three weeks.

Before you leave the desk:

• Photograph the PIR form (both sides)
• Photograph your baggage claim tag
• Photograph your boarding pass
• Note the name of the agent who helped you and the time of the interaction

Going forward:

• Hold onto every receipt for purchases you make while waiting for your bag. Toiletries, underwear, a change of clothes, medications — all of it. Airlines require receipts for expense reimbursement, and “verifiable” is a key part of the federal standard. ^[6]
• Write down the names and reference numbers from every subsequent phone call or chat with the airline
• If you packed high-value items, note them now while your memory is fresh. Include brand names, approximate purchase dates, and estimated values.

This documentation does double duty. It supports your interim expense claim while the bag is delayed, and it becomes the foundation of your compensation claim if the bag is declared lost.

You’re entitled to reimbursement for essential purchases while your bag is missing. The U.S. Department of Transportation requires airlines to compensate passengers for “reasonable, verifiable, and actual incidental expenses” during a baggage delay. ^[6]

There’s no fixed federal dollar amount for these expenses. The standard is “reasonable.” Some airlines set internal daily limits, but those are airline policy, not law. ^[6]

What qualifies:

• Toiletries (toothbrush, toothpaste, deodorant)
• Underwear and socks
• A change of clothing appropriate for your destination
• Medication or medical supplies that were in the checked bag

What doesn’t qualify:

• Luxury items or designer clothing
• Items unrelated to the delay (electronics, souvenirs)
• Anything a reasonable person wouldn’t consider essential

Bag fee refund: If your domestic bag isn’t delivered within 12 hours of your arrival at the gate, the airline must automatically refund your checked bag fee. For international flights, the threshold is 15 hours (short-haul) or 30 hours (long-haul). You must have a Mishandled Baggage Report on file to trigger this refund. ^[7]

Before you leave the airport, confirm how to check your bag’s status online.

WorldTracer online: Enter your PIR reference number at the airline’s website or on the WorldTracer portal to see current status. The system updates as your bag is located, matched, and routed. ^[2]

Airline apps: Most major airlines offer real-time bag tracking through their mobile app. Delta’s Fly Delta app, for instance, uses RFID scanning and sends push notifications at every stage. United and American Airlines also support in-app tracking.

Your personal tracker: If you placed an AirTag, SmartTag, Tile, or GPS tracker in your bag, check its location now. You can share the tracker’s location link directly with the airline — Apple’s Share Item Location feature works with over 50 airlines, and United and American Airlines both accept AirTag location data as part of the recovery process.

Plan to check for updates at least every 12 hours during the first 48 hours. If you haven’t heard anything within 24 hours, call the airline’s baggage service number for a direct update. Don’t rely on the app alone.

Once you’ve been through this, you’ll want to make sure it doesn’t happen again. A few low-cost precautions make a significant difference.

Put a tracker in your bag. A $29 Apple AirTag or $30 Samsung SmartTag gives you real-time visibility into your bag’s location, even when the airline’s systems can’t tell you where it is. See our tested tracker recommendations.

Remove old baggage tags. Leftover tags from previous flights are a common cause of bags being routed to the wrong destination. Tear off every old tag before you check in.

Avoid tight connections. Transfer mishandling accounts for 41% of all mishandled bags. ^[8] Connections under 60 minutes at major hubs are high-risk. Build in buffer time when booking.

Photograph your packed bag. A quick photo of the contents before you zip up speeds up the claims process if the worst happens.

Carry essentials in your hand luggage. Medications, a change of clothes, phone chargers, and important documents should always travel in the cabin with you.