Two money problems hide inside a lost bag claim. One is the checked bag fee you paid. The other is the value of what was inside. U.S. and international rules treat them differently, and that difference decides how fast you get paid.
Start at the airport. Go to the baggage service desk before you leave the terminal. Ask for a Property Irregularity Report, or PIR. Write down the reference number. Photograph your baggage tag and boarding pass. If the airline offers an interim expense payment, ask what it covers.
Get the PIR. That number is your claim's spine.
What the U.S. DOT Actually Requires
On a domestic U.S. flight, the DOT sets a per-passenger liability cap for lost bags. The cap changes with inflation, so don't trust an old blog number. The DOT's airline baggage guidance explains the current figure and the complaint process. You still have to document your loss. The airline doesn't owe you the cap just because the bag vanished.
Separate from that, 14 CFR 260.5 requires airlines to refund checked bag fees when a bag is significantly delayed or lost. The rule has limits. It does not require a refund if you failed to pick up and recheck a bag at the first international entry point into the United States, or if you agreed to travel without the bag. Ask for the fee refund in writing even if you also claim contents.
The EU Rule People Mix Up
EU261 is about flight delays, cancellations, and denied boarding. It is not the law that pays for a lost bag. Baggage liability comes from the Montreal Convention and EU passenger rights. The EU air passenger rights page says airlines can be liable for up to about 1,300 euros for lost, damaged, or delayed checked luggage. That figure is not an automatic EU261 payout. It's a liability cap, and you still need receipts or other proof.
If your flight touches the EU, read both sets of rules. EU261 may cover the flight disruption. The Montreal Convention covers the bag.
Which Rule Applies?
| Your trip | Main rule | What it covers | Practical limit |
|---|---|---|---|
| Domestic U.S. | DOT and 14 CFR 260.5 | Bag fee refund and baggage liability | Per-passenger cap adjusted over time |
| International with U.S. point | Montreal Convention | Lost, delayed, damaged bags | Cap set in SDR, converted to dollars |
| EU flight or EU carrier | Montreal Convention plus EU passenger rights | Baggage liability; EU261 only for flight disruption | Around 1,300 euros liability cap for baggage |
| Airline policy | Carrier's contract of carriage | Reporting windows, interim expenses, claim portal | Varies by airline |
How to File Without Losing the Paper Trail
- Report the bag at the airport. Get a PIR. Keep the tag number.
- Gather proof. Boarding pass, bag tag photo, packing photos, receipts, and an itemized inventory.
- Submit the airline claim. Use the carrier's baggage portal for Delta, American, United, or whichever airline operated the last leg. For international connecting trips, keep every carrier in the loop.
- Track the bag. Ask if it is in WorldTracer. Check updates every few days.
- Ask for the fee refund. Cite 14 CFR 260.5 for U.S. trips. Do this in the same claim or a separate written request.
- Escalate if stalled. For U.S. flights, file a DOT complaint. For EU flights, contact the national enforcement body.
Documents That Move a Claim Forward
The strongest file is boring. It has dates, item names, purchase prices, and receipts. A vague inventory like "clothes, 500 dollars" invites a low offer. List each item. Add a photo if you have one. If you don't have receipts, bank statements can help, but they don't prove the item was packed. A photo of the open bag before check-in is better.
The 21-day mark matters. Under the Montreal Convention framework, a bag not delivered within 21 days can be treated as lost. That is when the full liability claim opens. Don't wait for the airline to call it lost. Send a written notice that you consider it lost after day 21.
Denials and Appeals
If the airline denies the claim, read the denial letter for the stated reason. Common reasons are missed reporting windows, no receipts, or an inventory that doesn't match the claim. Reply with evidence, not anger. Ask for a supervisor review. For U.S. flights, the DOT complaint route is the pressure point. For EU flights, the national enforcement body can review whether the airline followed the rules. This article is general information, not legal advice.
Insurance and Credit Cards
Your credit card may offer baggage protection. Read the guide to benefits, not the summary page. Many cards require you to file with the airline first. Travel insurance may pay above the airline cap, but it often has deductibles and exclusions. File the airline claim before you settle with anyone. Keep copies of every submission.
Common Mistakes That Cost Money
- Leaving the airport without a PIR.
- Throwing away the bag tag or boarding pass.
- Sending a vague inventory.
- Missing the airline's reporting window.
- Accepting a partial payment without checking if it covers the fee refund too.
- Filing one claim for multiple bags when the airline wants separate PIRs.
FAQ
Can I get a refund for the checked bag fee if the bag is only delayed? In the U.S., 14 CFR 260.5 requires a refund when the bag is significantly delayed or lost. The exact definition and process are in the rule. Ask in writing.
Does EU261 pay for lost luggage? No. EU261 covers flight disruptions. Baggage loss is handled under the Montreal Convention and EU passenger rights, with a liability cap around 1,300 euros.
How long do I have to file? It depends. Report the loss before leaving the airport when you can. For international lost bag claims, the 21-day mark under the Montreal Convention is critical. Check the airline's contract of carriage for its own deadlines.
What if the airline offers a low amount? Don't accept it as final without checking the current DOT or Montreal cap. Ask for a written explanation. Appeal with receipts and an itemized inventory.
Before you leave the airport, get the PIR. Then put a calendar reminder for day 21. If the bag is still missing, send the fee refund request and the contents claim together, with receipts attached.