DOT Baggage Rules: What Airlines Must Do

The DOT sets minimum standards for how airlines handle your checked bags. These are federal regulations, not suggestions. Airlines may exceed them, but they can’t fall below them.

This page covers every DOT requirement that applies when your bag is lost, delayed, or damaged on a domestic flight. It also covers the bag fee refund rule, which applies to both domestic and international flights. If you’re flying internationally, many of these rules still apply — but your primary protections come from the Montreal Convention, which is a separate legal framework.

Section 1: Liability limits — 14 CFR Part 254

Under 14 CFR Part 254, airlines operating aircraft with more than 60 seats may not limit their baggage liability below $4,700 per passenger. ^[1] This figure took effect January 22, 2025, up from $3,800. ^[5]

What that number means

The $4,700 is a minimum floor, not an automatic payment. It represents the maximum amount an airline is required to make available for provable damages when your personal property — including your bag and its contents — is lost, damaged, or delayed. ^[1]

To receive compensation, you must document your losses. Airlines won’t hand you a check for $4,700 simply because your bag went missing. The burden is on you to prove what was in the bag and what it was worth.

What is covered

The regulation covers “provable direct or consequential damages resulting from the disappearance of, damage to, or delay in delivery of a passenger’s personal property, including baggage.” ^[1] That means:

• The bag itself
• Clothing, electronics, and personal items inside
• Toiletries, medication, and other contents
• Consequential damages — reasonable expenses you incurred because the airline failed to deliver your property

Depreciation applies

Airlines don’t pay replacement cost. They pay depreciated value. ^[3] If you packed a five-year-old laptop that originally cost $1,500, the airline will calculate what it’s worth today — not what it costs to buy a new one.

This is one of the most common points of friction in baggage claims. The DOT’s Fly Rights guide confirms that airlines consider the depreciated value of possessions, not their original price or replacement cost. ^[3] If the total depreciated value of your lost items is less than $4,700, that lower amount is what the airline will offer.

How the limit is adjusted

The DOT reviews the liability limit every two years using the Consumer Price Index for All Urban Consumers (CPI-U). The formula is: $2,500 multiplied by the ratio of the current July CPI-U to the December 1999 CPI-U, rounded to the nearest $100. ^[1]

The increase from $3,800 to $4,700 — a 23.7% jump — was published in the Federal Register on October 24, 2024 and reflects accumulated CPI-U changes since the previous adjustment. ^[5]

Which flights are covered

The regulation applies to any flight segment using large aircraft (more than 60 seats), or to any segment on the same ticket as a large-aircraft flight. ^[1] In practice, this covers the vast majority of domestic commercial flights. Small regional aircraft on a separate ticket could fall outside this rule, but that’s rare.

Section 2: Bag fee refunds — 14 CFR Part 260

Since October 28, 2024, airlines must automatically refund your checked bag fee when your bag is significantly delayed or lost. ^[2] This is separate from — and in addition to — any compensation for the bag’s contents.

Delay thresholds

The refund is triggered when your bag exceeds these delivery windows, measured from the time you deplane at your final destination: ^[2]

How the refund works

Once you’ve filed an MBR and the delay threshold is exceeded, the airline must process the refund automatically. Key rules:

• The refund must be in the original form of payment, unless you agree to a cash equivalent ^[2]
• No processing fees may be charged for the refund ^[2]
• Credit card refunds must be processed within 7 business days ^[2]
• Cash, check, or debit refunds must be processed within 20 calendar days ^[2]

What is refunded

The refund covers the checked bag fee you paid for the delayed or lost bag. If you paid $35 to check one bag and $45 for a second bag, and only the second bag was delayed beyond the threshold, you receive $45 back. ^[6]

This rule applies to both U.S. and foreign carriers operating flights to or from the United States. ^[6]

Exemptions

Airlines aren’t required to refund your bag fee if the delay was caused by passenger fault (such as checking in too late) or if you signed a voluntary bag separation agreement. ^[2]

Section 3: Interim expenses during a delay

While your bag is missing, the airline is expected to reimburse you for reasonable necessities. This is where the rules get less precise — and where airlines often take advantage of the confusion.

The “reasonable” standard

DOT guidance requires airlines to compensate for “reasonable, verifiable, and actual incidental expenses” during a baggage delay. ^[3] This is guidance from the DOT’s Fly Rights publication. It’s not a separate federal regulation like 14 CFR 254 or 260.

There’s no fixed daily dollar amount mandated by the federal government. You’ll see airline-specific policies offering $50, $100, or $200 per day in interim expenses. Those are internal airline policies, not federal requirements. ^[3]

What qualifies as reasonable

Based on DOT guidance, reasonable interim expenses include: ^[3]

• Toiletries — toothbrush, toothpaste, deodorant, and similar essentials
• Underwear and socks
• A change of clothing appropriate for your destination
• Medication or medical supplies that were in the checked bag
• Other genuinely necessary items during the delay period

What doesn’t qualify: luxury purchases, designer clothing beyond basic needs, items unrelated to the delay such as souvenirs, or expenses that exceed what a reasonable person would spend given the circumstances.

Receipts are non-negotiable

The DOT standard requires that expenses be “verifiable.” ^[3] That means receipts. If you buy $80 worth of replacement clothing and toiletries and can’t produce the receipts, the airline has grounds to deny or reduce the reimbursement.

Reimbursement for replacement clothing

There’s a nuance worth knowing. When you buy new clothing to replace what was in your delayed bag, airlines may only reimburse a portion of the cost — on the basis that you’ll keep and continue to use the new items. ^[3] The airline may agree to a higher reimbursement if you turn the replacement items over to them, though in practice this rarely happens.

Section 4: Notice requirements

Airlines must tell you about your rights. Specifically, 14 CFR Part 254 requires airlines to provide conspicuous written notice on or with your ticket that either: ^[1]

1. Discloses any monetary limitation on the airline’s baggage liability, or
2. States: “Federal rules require any limit on an airline’s baggage liability to be at least $4,700 per passenger.”

In practice, this notice is buried in the terms and conditions you accept when purchasing a ticket. Few travelers read it. But the requirement exists, and if an airline doesn’t provide it, that’s a potential DOT violation.

Section 5: Filing a DOT complaint

If an airline doesn’t follow these rules, you can file a complaint with the DOT’s Office of Aviation Consumer Protection (OACP). It’s a free administrative process — no lawyer required. ^[4]

How to file

What the DOT can and cannot do

The DOT can:

• Track complaint trends and identify systematic airline problems
• Take enforcement action and impose fines on airlines that violate federal rules
• Use complaint data to inform future consumer protection regulations
• Publish complaint data in the monthly Air Travel Consumer Report ^[4]

The DOT cannot order an airline to compensate a specific passenger. The complaint process is administrative, not judicial. ^[4] Filing a DOT complaint creates a paper trail and contributes to enforcement pressure, but it doesn’t directly resolve your individual claim.

What the OACP does not handle

• Safety complaints go to the Federal Aviation Administration (FAA)
• Security complaints go to the Transportation Security Administration (TSA)

If your bag was damaged by TSA screening, that’s a TSA claim, not an airline claim. The filing process is different.

Section 6: What the DOT does not regulate

Understanding what the DOT requires is important. Understanding what it doesn’t require is equally important, because airlines often blur the line between legal obligation and voluntary policy.

The DOT doesn’t set:

• Specific stipend amounts. The DOT says “reasonable” expenses during a delay. It doesn’t say “$100 per day” or any other specific number. When an airline offers you $50 for the night, that’s the airline’s policy, not the federal minimum.

• Search timelines for lost bags. Airlines typically search for 5 to 14 days before declaring a bag officially lost. The DOT doesn’t mandate a specific number of days. When a bag is declared lost varies by carrier.

• Specific claim deadlines. For domestic flights, the filing deadline for compensation claims is governed by the airline’s Contract of Carriage and applicable state law, not by DOT regulation. (International flights have different rules under the Montreal Convention.)

• How airlines handle individual claims. The DOT sets the floor for liability and the requirement for bag fee refunds. It doesn’t dictate how airlines process individual claims, how they calculate depreciation, or how quickly they must settle.

• Compensation for carry-on bags. The 14 CFR 254 liability limit applies to personal property in the airline’s custody. A carry-on bag damaged in the overhead bin may fall under different legal theories.

The regulatory hierarchy

When navigating a domestic baggage claim, the rules apply in this order:

1. 14 CFR Part 254 — sets the minimum liability floor ($4,700) ^[1]
2. 14 CFR Part 260 — requires bag fee refunds for significant delays ^[2]
3. Airline Contract of Carriage — may provide rights beyond the federal minimums
4. DOT Fly Rights guide — consumer-facing guidance document (not binding regulation) ^[3]
5. DOT OACP enforcement — complaint-based oversight when airlines violate the rules ^[4]

The Contract of Carriage is the legal agreement between you and the airline. It may contain provisions more generous than federal law — some airlines, for example, offer higher interim expense limits or faster claim processing. It can’t, however, set liability below the $4,700 federal floor.

What to do now

If your bag is currently lost or delayed, start with the practical steps:

• At the airport: What to do before you leave the terminal
• Filing a claim: How to file a baggage compensation claim, step by step
• Claim letter: Free claim letter template citing the specific regulations
• International flight: Your rights under the Montreal Convention (coming soon)
• Airline denied your claim: How to escalate a denied or lowball claim (coming soon)