What to Do When an Airline Loses Your Luggage in 2026

If an airline loses your luggage, file a report at the airport before you leave, keep every receipt for essentials you buy, and know the caps: up to $4,700 per passenger on domestic US flights and about $2,175 on most international flights. Your claim clock starts the hour you land.

That is the whole game in one paragraph. The rest of this guide is the detail that turns a shrug from an airline into money back in your pocket: what to file, what to buy, what the airline must pay, and the reporting deadlines for six major airlines, compared side by side.

What Should You Do the Minute Your Bag Does Not Show Up?

Do not leave the baggage hall without a report. Walk straight to the airline baggage service office, usually near the carousel, and file a Property Irregularity Report, known as a PIR. This is the official record that your bag did not arrive, and everything that follows depends on it. Travelers on the Rick Steves forums repeat the same lesson: the airport report is the one that holds weight later.

Have these ready at the desk: your boarding pass, your bag claim tags, a description of the bag, and the address where the bag should be delivered. If you are staying at a hotel, give the hotel name and your check in date, not just a city. Double check the spelling of your name and phone number on the report before you walk away, and leave with a written or digital copy plus a file reference number. Photograph the report with your phone before you leave the desk.

Ask two questions before you go. First, what is the airline’s process for reimbursing essentials while you wait? Second, is there a delivery arrangement for when the bag is found, or do you collect it yourself? Some airlines deliver to your hotel free. Others make you come back. Knowing which one saves a second wasted trip.

Tell the airline at the desk that you want compensation for incidentals. Do not wait until the bag turns up or does not. The travelers who get paid are the ones who open the claim at the airport, not the ones who call a week later.

Is Your Bag Lost or Just Delayed?

For the first days, your bag is delayed, not lost, and that distinction decides what you can claim. A delayed bag means the airline is still tracing it and owes you reasonable expenses for essentials in the meantime. A lost bag means the search is over and the airline owes you the depreciated value of the bag and its contents, up to the liability cap.

When does delayed become lost? Under the Montreal Convention, which governs most international flights, a bag is treated as lost if it has not arrived within 21 days. On domestic flights there is no single federal day count, and airlines set their own point, generally between 5 and 14 days after the flight. If an airline refuses to call a bag lost after an unreasonable period, the Department of Transportation can take enforcement action, which is a useful sentence to keep in your back pocket.

Do not wait for the airline to declare your bag lost before you document its value. Photograph what you packed from day one. If the bag is found on day 19, keep the receipts for everything you bought. If it never turns up, you want a contents list ready the day the claim converts from delay to loss.

What Does the Airline Actually Owe You?

Start with the caps, because they frame every negotiation. On domestic US flights, the Department of Transportation caps airline liability for lost, damaged, or delayed baggage at $4,700 per passenger. That figure was raised from $3,800 on January 22, 2025. On most international flights, the Montreal Convention caps liability at 1,519 Special Drawing Rights per passenger, roughly $2,175. Both caps are ceilings, not promises. The airline pays the depreciated value of what you can prove was in the bag, not a lump sum and not replacement cost. A three year old suitcase is valued as a three year old suitcase.

The caps are per passenger, not per bag. If your family shares one suitcase, you share one cap. That is one reason experienced travelers split clothes across bags when they can.

Then there is the checked bag fee. Since October 28, 2024, airlines must automatically refund your checked bag fee if the bag is substantially delayed: not delivered within 12 hours of a domestic flight arriving at the gate, within 15 hours for international flights of 12 hours or less, or within 30 hours for longer international flights. The refund must arrive within 7 business days for credit card purchases or 20 calendar days for other payment methods. If it does not arrive, that is a DOT violation worth reporting.

For interim expenses during a delay, the DOT requires airlines to reimburse reasonable, verifiable, and actual incidental expenses. There is no fixed daily allowance in the rule, despite what some airline scripts suggest. Toiletries, a change of clothes, a phone charger: these are the core of it. A $400 suit on day one will draw pushback. A $60 outfit and $25 in toiletries will not.

What the airline will not cover is in its contract of carriage, and the exclusions are long: jewelry, cash, electronics, cameras, medication, fragile items, and perishables lead most lists. The lesson is blunt and it is the same one every frequent traveler learns once: valuables and medication fly in your personal item, never in a checked bag.

What I Found Comparing Six Airlines’ Lost Bag Rules

I pulled the reporting windows, delay guarantees, and payout timelines for six major US airlines from their published policies, as compiled by NerdWallet on March 19, 2026. The headline liability cap is the same for every airline, because the DOT sets it. Everything else varies, and the variation is where claims die.

Here is what the comparison shows, airline by airline:

• Alaska Airlines: report damaged bags within 24 hours domestic or 7 days international; report delayed bags within 24 hours domestic or 21 days international. Payout generally lands within 4 to 6 weeks. Alaska also runs a 20 minute baggage guarantee: if your bag is not at the carousel within 20 minutes of arrival at the gate, you get 2,500 Atmos Rewards points or a $25 discount code, but you must contact the baggage office within 2 hours of arrival.
• American Airlines: report damaged bags within 24 hours domestic or 7 days international; report delayed bags within 4 hours of arrival. Payout within 4 to 6 weeks after filing. That 4 hour delayed window is the trap. Miss it and your claim starts on the back foot.
• Delta Air Lines: report damaged bags within 24 hours domestic or 7 days international; report delayed bags before you leave the arrival airport. Delta also runs a 20 minute bag guarantee: 2,500 bonus SkyMiles if your checked bag does not arrive at the carousel within 20 minutes of a domestic flight, claimed through an online form within 2 hours of arrival. Delta publishes no estimated payout timeline.
• JetBlue: report damaged bags within 4 hours of arrival; report delayed bags within 4 hours of arrival. No published payout timeline.
• Southwest Airlines: report damaged bags within 4 hours domestic or 7 days international; report delayed bags within 4 hours domestic or 7 days international. No published payout timeline.
• United Airlines: report damaged bags within 24 hours domestic or 7 days international; report delayed bags within 24 hours domestic or 21 days international. No published payout timeline.

Quotable summary: American, JetBlue, and Southwest all give you just four hours to report a delayed bag, while United and Alaska give you a full day, a gap that decides whether a claim lives or dies.

Two patterns jump out. First, the 4 hour airlines punish anyone who discovers the problem after leaving the airport, which is exactly what happens on a tiring trip. Second, only Alaska and Delta put a price on a short delay with their 20 minute guarantees, and both require you to act within 2 hours. The guarantees are small money, but they are money most travelers never claim because they never knew the guarantee existed.

What Should You Buy While You Wait?

Buy what you actually need, keep every receipt, and photograph each receipt at the store in case the thermal paper fades. That is the entire strategy, and travelers who followed it report full approvals where travelers who guessed got partial ones.

A sensible first day kit: toiletries, underwear, a change of clothes, a phone charger, and any medication you can replace locally. Buy in the size and price range you would normally buy, not the cheapest and not luxury. Airlines approve reasonable replacements. They reject upgrades, and they reject categories they can argue you did not need yet.

If the airline told you at the desk that it authorizes a specific daily amount, stay inside it and keep the written note. If it told you nothing, stay modest on day one and scale up only if the delay stretches. A bag delayed three days justifies more purchases than a bag delayed overnight, and your receipts should tell that story.

Do not throw away packaging or tags until the claim is settled. If the airline asks for proof that you bought the item during the delay, the receipt plus the item is a closed argument.

What If the Airline Lowballs Your Claim?

This is the part where most travelers give up, and it is the part where you should not. Airlines pay depreciated value, so a low first offer is normal. It is not final.

I have spent 27 years behind a camera, and the one business lesson that has never failed me is this: the first offer is a test, not a verdict. Years ago Getty wanted to pay me $300 for a shoot while billing the client $5,000. I refused, and I would rather sit home than take a number that insults the work. An airline claim is the same shape. A low first number is the airline finding out whether you will go away. Answer it in writing, with receipts, with the report number, and with the rule cited: DOT liability for domestic flights, or the Montreal Convention for international ones. Written claims with documents get escalated. Phone calls get forgotten.

If the airline still will not move, you have two more doors. First, file a complaint with the Department of Transportation, which tracks airline compliance and can pressure a carrier that is slow walking a valid claim. Second, claim through the second payer: your travel insurance or your credit card’s baggage coverage. Many travel cards cover delayed and lost baggage on top of what the airline pays, and travel insurance often covers the gap between the airline payout and your actual loss. Claim with the airline first, then take the remainder to the second payer, and tell each one about the other so you never claim the same dollar twice.

Do not let a bag that turns up late make you forget the paperwork. A bag found on day 19 still leaves you with 19 days of receipts to settle, and a written claim for the delay must go in promptly. The travelers who lose money are not the ones with weak claims. They are the ones who waited.

How Do You Keep This From Happening Again?

You cannot make an airline lose zero bags. You can make a lost bag a small problem instead of a trip ending one.

First, carry on when you can. I fly to shoots with my Leica M11 and my 50mm lens in my hands, never in a checked bag, because the tool my living depends on is not something I hand to a conveyor belt. The same logic applies to anything you cannot replace at your destination: medication, glasses, chargers, travel documents, and one full change of clothes all ride in your personal item.

Second, split your clothes. If two people travel together, put half of each person’s clothes in each bag. One lost bag then means an inconvenience, not a wardrobe wipeout.

Third, photograph your packed bag before you close it, and photograph the bag itself from the outside. When the airline asks you to describe the bag and its contents, a photo answers in seconds what memory fumbles for an hour.

Fourth, put a tracker in the bag. An AirTag or Tile will not force the airline to move faster, but it tells you whether your bag is at your departure airport, your connection, or your destination, and that knowledge changes every conversation you have with the baggage desk.

Fifth, keep your bag claim tags until you are home. They are the fastest way for an airline to find a bag in its own system.

Frequently Asked Questions

How long does it take for a lost bag to be found?

Most delayed bags turn up within a few days, often on the next flight to the destination. A bag missing 21 days on an international flight is treated as lost under the Montreal Convention. On domestic flights, airlines generally declare a bag lost between 5 and 14 days.

How much money do you get if an airline loses your luggage?

Up to $4,700 per passenger on domestic US flights and about $2,175 on most international flights, based on the depreciated value of the bag and contents you can prove, plus a refund of your checked bag fee. The cap is a ceiling, not a guaranteed payout.

Do airlines pay for clothes you buy while your bag is delayed?

Yes. Airlines must reimburse reasonable, verifiable, and actual incidental expenses such as toiletries and clothing while your bag is delayed. Keep every receipt, buy what you actually need, and file the claim in writing.

What is the deadline to report a delayed bag?

It depends on the airline. American, JetBlue, and Southwest require delayed bag reports within 4 hours of arrival on domestic flights. United and Alaska allow 24 hours domestic. Delta requires the report before you leave the arrival airport. Check the comparison above for your carrier and report at the airport, not from home.

Should you claim through travel insurance or the airline first?

Claim through the airline first, because the airline is liable for the bag while it is in its control. Then take any remaining loss to your travel insurance or credit card baggage coverage, and tell each payer about the other so no dollar is claimed twice. For more on how travel insurance treats expensive trips, see the guide linked below.

Internal links used in this draft

• The cost side of checked bags, and how to stop paying it: The Real Cost of Traveling With Luggage
• When a second payer matters: Is Travel Insurance Worth It for Expensive Trips?
• The wider trip going wrong playbook: A Guide to Staying Prepared When a Great Trip Goes Off Course

Photo: Airport baggage carousel at Suvarnabhumi Airport, Bangkok, by Markus Winkler via Pexels.