This page goes deeper on one part of the policy. The full record is at United Airlines Baggage Rules.
A checked bag counts as lost on United once five days pass with no arrival. Before that point it is a search in progress. The reporting steps and deadlines below decide how much of your money comes back either way.
United Airlines baggage tracking starts the moment you file a report at the Baggage Service Office or online. The file reference number you get is also the code the tracker uses to follow your bag.
United Airlines baggage tracking: how it works
Report a bag that did not arrive at the Baggage Service Office before you leave the airport. Afterward you can report online, in the United app, or by chat. You can also text BAGS to 32050 or call the Baggage Recovery Center at 1-800-335-2247, or 1-281-821-3526 from outside the U.S., all listed on United’s own bag help page.
Once the report is filed, United issues a file reference number, such as ORD12345M. A delayed bag ends in M, and a damaged bag report ends in A or D instead.
Enter that reference number with your last name on United’s bag tracker to follow the search. From there you can also request courier delivery once the bag is found, or check claim status.
United runs the search internally rather than naming a public third party network. The reference number and last name are all United Airlines baggage tracking needs. Photograph your bag tag before you check it.
Reporting deadlines
Report a delayed bag within 24 hours of arrival for domestic travel, which United defines as the United States, Guam, Puerto Rico and the Virgin Islands. Report within 21 days for international travel.
Miss the window and United can decline the claim. File at the airport if you can.
A connecting itinerary does not move the deadline. File with United even when the leg that lost the bag flew on a partner carrier.
Interim expenses while your bag is missing
Once you have a file reference number, submit receipts for clothes and toiletries bought while the bag was delayed. This is the interim expenses claim. Submit within 45 days for domestic travel or 21 days for international travel, and keep every receipt.
United also issues an automatic bag fee refund in some cases. It applies to bags delayed over 12 hours domestically, over 15 hours on a short international flight, or over 30 hours on a longer one. That refund is separate and needs no claim.
Pack a change of clothes in your personal item when the trip allows it. It costs nothing and skips the receipts entirely.
When a delayed bag becomes lost
United treats a bag as lost once five days pass with no arrival. At that point file a lost bag claim instead of waiting on the delayed bag report, following the same steps in our guide to reporting a lost bag. Include a full inventory of the contents, receipts where you have them, and a photo ID.
The claim deadline matches the interim expense window: 45 days from arrival domestically, 21 days internationally. United states a maximum reimbursement of $4,700 for bags lost within the U.S. and $2,000 for bags lost on international trips, minus anything already paid as interim expenses.
Compensation and liability limits
The Department of Transportation caps what a domestic airline owes for a lost, damaged or delayed bag at $4,700 per ticketed passenger. United’s own liability terms match that figure for the same domestic routes listed above. The cap does not apply to wheelchairs or other assistive devices.
On international trips covered by the Montreal Convention, United’s own page still lists 1,288 Special Drawing Rights per passenger for checked and carry-on baggage combined. The treaty figure was raised to 1,519 SDR on 28 December 2024, and that higher limit is the one that applies. That figure moves with the exchange rate the IMF publishes for SDRs.
High value, fragile or perishable items are excluded from coverage on domestic trips. Read the Contract of Carriage before checking anything irreplaceable.
These are ceilings, not automatic payouts. United still wants an itemized inventory and receipts, and it pays based on the value it can verify.
Damaged bags
Report a damaged bag at the Baggage Service Office before you leave the airport if you spot it there. Otherwise report by chat, by texting BAGS to 32050, or by calling the Baggage Recovery Center. The window is 24 hours domestically or 7 days internationally.
United sometimes routes repair or replacement to a third party vendor with its own 14 day window. Other times it asks for a claim on the same 45 or 21 day timeline as a lost bag. Read the site’s damaged luggage claims guide for the paperwork that helps.
What claims actually run into
Travelers who compare notes on baggage claims say the slowest cases involve connecting itineraries. United has to confirm where the bag left the system before it settles a claim when more than one carrier handled it. A detailed inventory filed the same day the bag goes missing, with approximate dates and values, is what repeatedly moves a case along.
Photos of the packed bag and its contents, taken before the trip, help the same way. Filing late or with only a vague description of what was inside is the most common reason a claim gets sent back for more paperwork.
Prevention: make a bag easy to find
A tracker inside the bag turns a stalled search into a location on a map. Drop an Apple AirTag (2nd generation) 4 pack into a checked bag and you can show the Baggage Service Office where it last pinged. That moves a search along faster than a description alone.
Android travelers get the same result from a Samsung Galaxy SmartTag2 or a Tile by Life360 Bluetooth tracker. Both report location through their own network rather than Apple’s Find My.
A visible external tag matters just as much. Travelambo leather luggage tags 2 pack put a name and phone number on the outside of a bag, which often gets it rerouted before a formal claim is even needed.
If your bag was checked on a United fare with a checked bag fee, keep that receipt too. It supports the automatic fee refund if the bag ends up delayed past the threshold.
The bottom line
File the delayed bag report before you leave the airport and use the file reference number for United Airlines baggage tracking on United’s own tracker. Move to a lost bag claim once five days pass with nothing back. Keep receipts and file within the deadline for your itinerary, since United enforces both the reporting window and the claim window strictly.
A tracker in the bag and a name tag on the outside are cheap insurance against ever needing any of this. Check United’s checked baggage weight limit before you pack, since an overweight bag is more likely to get pulled and mishandled at the counter, and review the rest of United’s baggage rules before your next trip.
Common questions
How do I track a delayed bag on United Airlines?
Report the bag at the Baggage Service Office or online to get a file reference number, then enter it with your last name on United’s bag tracker to follow the search.
What number does United use for its baggage tracker reference?
A delayed bag report gets a file reference number ending in M, such as ORD12345M, and a damaged bag report ends in A or D.
When does United consider a bag officially lost?
United treats a checked bag as lost once five days pass after arrival with no sign of it, at which point you file a lost bag claim instead of a delayed bag report.
How much can I claim for a bag United loses?
United states a maximum of $4,700 for bags lost within the United States and $2,000 for bags lost internationally, minus any interim expenses already paid.
What is the deadline to file a lost bag claim with United?
Submit within 45 days of arrival for domestic travel or 21 days for international travel, matching the interim expense reimbursement window.
Does United pay for clothes I buy while my bag is delayed?
Yes, submit receipts through United’s interim expenses claim within the same 45 or 21 day window, and United may also issue an automatic bag fee refund for long delays.
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