File a report with United before you leave the airport. Go to the United Baggage Service Office in the baggage claim area and get a file reference number (a 10-character code starting with your airport code, like ORDUA12345). If your bag doesn't show up on the belt, that report is the single most important thing standing between you and reimbursement. You can also file online at united.com within a limited window, but the in-person report timestamps your claim and starts the clock on United's obligations. Do not leave without it.
First Steps: Report It Before You Walk Out
United treats a bag as "delayed" until it's officially declared lost, and the two categories carry different rights. Most "lost" bags are actually delayed and turn up within a few days. Here's what to do the moment your bag doesn't arrive:
- Go straight to the Baggage Service Office in the arrivals hall before leaving the secure area. Bring your boarding pass and your bag claim tags (the stickers the agent put on your ticket folder at check-in).
- Get your file reference number. Write it down and photograph it. You'll need it for every follow-up.
- Describe the bag in detail — brand, color, size, distinguishing marks, and what's inside. Detailed descriptions get bags matched faster.
- Confirm your delivery address. United delivers recovered bags to your home or hotel at no charge, usually within a day of locating them.
- Ask about immediate expense reimbursement for essentials if you're away from home.
If you're connecting and your bag got separated during a rebooking mess, the same rules apply — see what happens if your connecting flight is cancelled for how misconnects tangle up baggage.
Track Your Bag and Push for Delivery
Once you have a file number, United gives you tools to track the search:
- Baggage tracking online: Enter your file reference number at united.com/bags or in the United app to see status updates.
- Text and email alerts: United will notify you when the bag is located and out for delivery.
- MileagePlus members can often see bag status directly in the app under their trip.
United uses a global tracing system (WorldTracer) shared across airlines, which matters if your bag was mishandled by a partner carrier on an international itinerary. If a codeshare or Star Alliance partner flew the leg where your bag went missing, the airline that operated that leg is generally responsible — but file with United since that's who you flew last.
Keep pressure on. Call United Baggage Recovery at 1-800-335-2247 every day your bag is missing. Reference your file number and ask for a status update and confirmation of your interim expense allowance.
Interim Expenses: What United Pays While Your Bag Is Missing
While your bag is delayed, United is expected to cover reasonable and necessary interim expenses for essentials — think toiletries, underwear, a change of clothes, and any critical items you need for your trip. This comes from United's Contract of Carriage, not federal law. The US Department of Transportation requires airlines to reimburse "reasonable" delayed-baggage expenses but leaves the specific amount to each airline.
A few things to know:
- Keep every receipt. No receipt, no reimbursement. Photograph them immediately.
- "Reasonable" is judged against your situation. If you're on a business trip with a meeting tomorrow, a modest work outfit is reasonable. A designer suit is not.
- There's no fixed daily cap published by United, but agents often reference informal per-day guidelines. Spend conservatively and be ready to justify it.
- You're at your destination, not home. United generally won't reimburse essentials if the bag is delayed on your way home, since you have your own belongings there.
When a Delayed Bag Becomes a Lost Bag
United typically declares a bag officially lost after it hasn't been located for a period of time — the practical threshold is usually around 5 to 14 days, with domestic bags declared lost sooner than international ones. Once the bag is declared lost, you move from interim expenses to a full claim for the value of the bag and its contents.
The DOT's liability limits are firm and worth memorizing:
| Type of flight | Maximum liability for lost/damaged bags |
|---|---|
| Domestic US flights | $3,800 per passenger (14 CFR 254) |
| International flights (Montreal Convention) | ~1,288 SDR (roughly $1,700–$1,800, adjusted periodically) |
These are ceilings, not automatic payouts. United pays the depreciated value of what you actually lost, up to the limit — not the price of buying everything new. To file the full claim:
- Submit an itemized list of everything in the bag with estimated purchase dates and original prices.
- Provide proof of value where possible — receipts, credit card statements, or photos of higher-value items.
- Include the bag itself as an item; luggage has value too.
- File within the deadline. For domestic flights, United requires notice of a claim within 24 hours for damage and generally requires a full lost-bag claim to be submitted within a set window (often 30 days). International claims under the Montreal Convention must be reported in writing within 7 days for damage and 21 days for delay.
Excluded Items and How to Protect Yourself
United's Contract of Carriage excludes or limits liability for a long list of high-value items packed in checked bags, including:
- Cash, jewelry, and precious metals
- Electronics, cameras, and computers
- Prescription medication
- Important documents and business papers
- Fragile or perishable items
The takeaway: carry these on, always. If you check a laptop and it disappears, United can legally deny that portion of your claim. This is exactly why bag insurance or a travel credit card with baggage delay/loss coverage is worth having — many cards reimburse delayed-baggage expenses and lost items above what the airline pays, sometimes covering the excluded categories.
If your bag came back battered instead of missing, that's a separate process — our guide on damaged baggage claims walks through the 24-hour reporting rule and how to document dents, tears, and broken wheels.
What to Do If United Denies or Lowballs Your Claim
Don't accept the first offer if it doesn't reflect what you lost. Airlines routinely open with a low depreciated figure hoping you'll take it.
- Respond in writing and re-attach your proof of value. Politely dispute the depreciation applied to items that were nearly new.
- Escalate to United Customer Care if the Baggage Recovery Center won't budge.
- File a DOT complaint at aviationconsumer.dot.gov. Airlines are required to respond, and a DOT complaint often shakes loose a better offer. DOT tracks baggage complaints by carrier and publishes them, which airlines care about.
- Use your credit card's benefit. If you paid for the flight with a card that includes baggage protection, file a parallel claim. This covers gaps United won't.
- Consider small claims court for domestic flights if United refuses a legitimate claim under the $3,800 limit. You don't need a lawyer, and the filing fee is small.
If your lost bag was part of a larger travel disaster — a cancellation or a blown connection — document everything together. When you're also fighting a cancellation, our pieces on rebooking a cancelled flight without paying more and what an airline owes you during a delay help you keep the two claims straight.
Frequently Asked Questions
How long before United considers my bag officially lost?
There's no single federal deadline, but United generally treats a bag as delayed for the first several days and declares it lost after it can't be located within roughly 5 to 14 days, sooner for domestic than international. Once it's declared lost, you can file the full-value claim up to the DOT limit of $3,800 for domestic flights.
Will United reimburse me for clothes and toiletries while my bag is missing?
Yes, United covers reasonable and necessary interim expenses when your bag is delayed and you're away from home. Save every receipt, keep purchases modest, and submit them with your file reference number. There's no published fixed daily cap, so "reasonable" is judged against your circumstances.
Does United owe me extra compensation for the inconvenience of losing my bag?
No. Unlike the EU's passenger-rights rules, the US has no mandatory compensation for baggage inconvenience. United owes you reimbursement for reasonable delay expenses and, if the bag is truly lost, the depreciated value of its contents up to the liability limit. That's it — anything beyond that is a goodwill gesture you'd have to negotiate.
What if my valuables were in the lost bag?
United's Contract of Carriage excludes or sharply limits liability for electronics, jewelry, cash, medication, and documents in checked luggage. If you checked these items, United can deny that portion of your claim. Your best recourse is a travel credit card or standalone baggage insurance that covers excluded categories — and next time, carry those items on.