How to Fill Out and Submit the DOT Air Consumer Complaint Form

The DOT air consumer complaint form is an online submission at airconsumer.dot.gov that lets you report an airline or ticket agent to the federal government for problems like cancelled flights, lost baggage, denied boarding, refund disputes, and disability discrimination. Filing takes about ten minutes if you have your booking and flight details ready. The DOT forwards your complaint to the airline and requires a written response, but it will not order the airline to pay you for your individual trip. It uses complaints to spot patterns and bring enforcement actions when carriers break federal rules.

When a DOT Complaint Actually Has Teeth

The Office of Aviation Consumer Protection (OACP) enforces specific federal rules. If your problem falls under one of them, your complaint carries weight. If it’s about a rude gate agent or a tight seat, the DOT will log it but has no rule to enforce.

Flight cancellations and significant schedule changes. Under a DOT final rule published in April 2024, airlines must issue automatic cash refunds — not vouchers — when they cancel a flight or shift departure or arrival by more than three hours on a domestic route or more than six hours on an international route, if you decline the alternative offered. The rule also covers involuntary downgrades and paid ancillary services you never received, like Wi-Fi that was down the whole flight or a premium seat the airline reassigned.¹²³
Involuntary denied boarding. When an oversold flight bumps you, 14 CFR 250.5 requires compensation of 200 percent of your one-way fare (capped at $1,075) if the airline rebooks you to arrive one to two hours late on a domestic flight, and 400 percent (capped at $2,150) if you arrive more than two hours late.⁴
Lost, damaged, or delayed baggage. Airlines must refund checked bag fees when they fail to deliver luggage within 12 hours of gate arrival on domestic flights. The window is 15 or 30 hours for international itineraries depending on flight length, and you must have filed a mishandled baggage report at the airport.³
Tarmac delays. Under 14 CFR 259.4, airlines must start moving the plane to let passengers off before three hours on domestic flights and four hours on international flights, and must provide food and water no later than two hours in.⁵
Disability discrimination. Federal rules under 14 CFR Part 382 prohibit airlines from refusing service based on disability and require wheelchair assistance, accessible seating, and proper stowage of mobility devices.⁶
Deceptive ticketing and advertising. The DOT enforces price transparency and investigates misleading fare and fee claims.

One boundary matters before you file. Safety concerns — engine problems, maintenance, low-flying aircraft — go to the FAA. Security complaints about screening, the no-fly list, or baggage screening go to the TSA at 1-866-289-9673 or TSA-ContactCenter@dhs.gov.⁷ Sending those to the OACP just delays things.

What to Gather Before You Open the Form

The form asks for specific identifiers so the DOT can match your complaint to airline records.⁸ Pull these together first:

Your ticket confirmation, itinerary, or invoice.
Airline name, flight number, date, and the origin and destination airports.
Any complaint you already sent the airline or ticket agent, plus the airline’s response. Note the names of representatives you spoke with and the dates of those conversations.
Supporting evidence: receipts for out-of-pocket expenses, photos of damaged baggage, screenshots of misleading fare ads.

The form specifically asks whether you’ve already complained to the airline. Documentation of that exchange shows you gave the carrier a chance to fix the problem and strengthens your filing.⁹

Filling Out and Submitting the Form

Go to airconsumer.dot.gov/consumer/s/oacp-form and select complaint, comment, or compliment. The form walks you through your contact information, the airline or ticket agent involved, your flight details, and a category for the type of problem.⁸

The narrative box is where your complaint lives or dies. Stick to facts. What happened, when, on which flight, what the airline told you, and what resolution you want. Reference specific promises made by staff. Include dates. An investigator scanning hundreds of complaints will move faster through a timeline than a letter to the editor.

Attach your supporting documents before submitting. You’ll get a confirmation email with a case number. Keep it for follow-up.

If you prefer paper, mail your complaint with the same information to the Office of Aviation Consumer Protection, U.S. Department of Transportation, 1200 New Jersey Avenue SE, Washington, DC 20590.⁷ Mailed complaints take longer because someone has to enter the data by hand.

What Happens After You File

The DOT does not investigate every complaint individually. For most service complaints, the OACP forwards your filing to the airline or ticket agent and requires the carrier to respond directly to you, with a copy back to the OACP.⁹ Under 14 CFR 259.7, the airline must acknowledge your complaint in writing within 30 days and send a substantive written response within 60 days.¹⁰ Those deadlines are obligations, not suggestions.

Disability complaints get more direct attention. The OACP investigates each one, reviews both your account and the airline’s response, decides whether a violation occurred, and mails you a written analysis.⁷ Airlines have 30 days, not 60, to substantively respond to a disability-related complaint.⁹

Behind the scenes, every complaint feeds the OACP’s compliance data. When patterns reveal systemic violations, the agency opens formal enforcement investigations. The data also flows into the monthly Air Travel Consumer Report that ranks airlines on delays, baggage handling, oversales, and complaint volume.¹¹

What the DOT Cannot Do, and What to Do Instead

Most filers don’t realize this until after they submit: the DOT has no authority to order an airline to pay you for an individual complaint.¹² The agency can impose civil penalties, issue cease-and-desist orders, and force changes to airline practices, but any penalty check goes to the U.S. Treasury.

You have two practical paths to actual money. The airline’s response to your DOT complaint may itself include a refund, voucher, or other compensation, because carriers prefer to close a filing rather than let it sit on their regulatory record. If the airline stonewalls, small claims court is built for this kind of dispute, and the DOT itself points consumers there when they need a cash award.¹³ Filing fees and damage caps vary by jurisdiction, and the process is designed for self-representation. Filing a DOT complaint and going to small claims are not mutually exclusive; doing both gives you regulatory pressure and a path to personal recovery at the same time.

International Flights

DOT consumer protection rules apply to foreign airlines operating to or from the United States, not just U.S. carriers. Any foreign airline authorized to fly U.S. routes must comply as a condition of its operating license.¹⁴ You use the same OACP form.

For baggage on international routes, the Montreal Convention imposes separate written-claim deadlines that run alongside the DOT process. File a written complaint directly with the airline within 7 days for damaged baggage and within 21 days for delayed baggage. Miss those windows and you lose the right to pursue a claim under the convention. Lawsuits under the convention must be brought within two years. File with the airline immediately even if you plan to submit a DOT complaint later.

1
U.S. Department of Transportation. Biden-Harris Administration Announces Final Rule Requiring Automatic Refunds of Airline Tickets and Ancillary Service Fees
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U.S. Department of Transportation. Refunds
3
Federal Register. Refunds and Other Consumer Protections
4
eCFR. 14 CFR 250.5 – Amount of Denied Boarding Compensation for Passengers Denied Boarding Involuntarily
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eCFR. 14 CFR Part 259 – Enhanced Protections for Airline Passengers
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Cornell Law Institute. 14 CFR Part 382 – Nondiscrimination on the Basis of Disability in Air Travel
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U.S. Department of Transportation. File a Consumer Complaint
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U.S. Department of Transportation. Office of Aviation Consumer Protection – Complaint, Comment, and Compliment Form
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U.S. Department of Transportation. U.S. Department of Transportation Air Travel Complaints
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eCFR. 14 CFR 259.7 – Response to Consumer Problems
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U.S. Department of Transportation. Air Travel Consumer Reports
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U.S. Department of Transportation. Confirmation
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U.S. Department of Transportation. Air Travelers: Tell It to the Judge
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U.S. Department of Transportation. Foreign Air Carrier Economic Licensing