How to File a Complaint Against an Airline

The Short Answer

First, complain directly to the airline. Give them a chance to fix it. If they don't, file a formal complaint with the U.S. Department of Transportation (DOT) through their online complaint system at airconsumer.dot.gov. The airline is legally required to acknowledge your complaint within 30 days and provide a written response within 60 days.

Step 1: Complain to the Airline First

Before involving the government, go to the airline. This isn't just good advice; it's what the DOT recommends. Many issues can be resolved faster at the airline level, and the DOT will ask whether you've already contacted the airline.

At the Airport

If the problem is happening in real time (cancelled flight, denied boarding, lost luggage), find a Customer Service Representative at the airport. These are the airline's on-the-ground troubleshooters, and they can often fix problems on the spot: rebooking flights, issuing meal vouchers, arranging hotel rooms.

If the counter agent can't help, ask for a supervisor. Be firm but polite. Document everything: take photos, save receipts, note names and badge numbers.

After Your Trip

Contact the airline's consumer affairs or customer relations department at their corporate headquarters. Every airline has one. You can usually find it through:

• The airline's website (look for "Contact Us" or "Customer Relations")
• The airline's app (usually under Help or Support)
• Email or online complaint form (preferred because it creates a written record)
• Social media (Twitter/X and Facebook often get faster responses than phone calls)

What to Include in Your Airline Complaint

• Your full name, contact information, and frequent flyer number
• Flight number, date, and route
• Confirmation number
• A clear, factual description of what happened
• What you want the airline to do about it (refund, voucher, compensation)
• Copies of receipts for out-of-pocket expenses
• Photos or documentation supporting your claim

Keep it factual and concise. A two-page emotional rant gets skimmed. A clear, organized complaint with specific details gets attention.

Step 2: File With the DOT

If the airline doesn't respond, gives you a runaround, or you believe they violated federal aviation consumer protection laws, escalate to the DOT.

How to File Online

The DOT launched its updated Aviation Complaint, Enforcement, and Reporting System (ACERS), replacing the outdated 1990s-era system. Here's how to use it:

• Go to airconsumer.dot.gov
• Click on the complaint form
• Select the type of complaint (flight problem, baggage, disability, discrimination, refund, etc.)
• Enter your personal information and flight details
• Write a clear description of the issue
• Upload any supporting documents
• Submit the form

The new system sends your complaint to the airline in real time and lets you log in to check its status. It's a significant upgrade from the old email-and-wait process.

What Happens After You File

Here's the timeline:

• Within 30 days: The airline must acknowledge your complaint
• Within 60 days: The airline must send you a written response addressing the issues
• After the response: The DOT reviews your complaint and the airline's response to determine if a violation occurred
• Final review: DOT mails you an analysis with their findings

Important reality check: the DOT doesn't resolve individual complaints like a court would. They don't order airlines to pay you. What they do is track complaints, identify patterns, and take enforcement action against airlines that systematically violate the rules. Your individual complaint contributes to the bigger picture.

What Types of Complaints the DOT Handles

The DOT's Office of Aviation Consumer Protection covers specific categories:

• Flight cancellations and delays (especially when the airline fails to provide required refunds)
• Denied boarding (involuntary bumping from oversold flights)
• Baggage issues (lost, damaged, or delayed luggage)
• Refund problems (airline won't process a refund they owe you)
• Disability discrimination (failure to provide wheelchair assistance, damage to mobility devices)
• Discrimination based on race, color, national origin, religion, sex, or ancestry
• Tarmac delays (held on the plane for extended periods)
• Deceptive practices (hidden fees, bait-and-switch pricing)

What the DOT Does NOT Handle

• Rude employees (annoying, but not a federal violation)
• In-flight service quality (bad food, uncomfortable seats)
• Airline loyalty program disputes
• Travel agency or third-party booking site issues (unless it involves a ticket agent regulated by DOT)
• Security complaints (those go to the TSA)
• Safety complaints (those go to the FAA)

Other Places to Complain

Credit Card Chargeback

If the airline owes you a refund and won't pay, your credit card company can be a powerful ally. File a chargeback dispute with your card issuer. Under the Fair Credit Billing Act, you have 60 days from the statement date to dispute charges. Credit card companies take these seriously, and airlines know it.

Small Claims Court

For monetary damages the airline refuses to pay, small claims court is an option. Filing fees are usually $30-$75. You don't need a lawyer. Airlines often settle rather than send a representative to court, especially for amounts under a few thousand dollars.

State Attorney General

Your state's Attorney General office handles consumer protection complaints. Some states have strong consumer protection laws that go beyond federal requirements.

Better Business Bureau

Filing a BBB complaint doesn't carry legal weight, but many airlines respond to BBB complaints to maintain their rating. It's another pressure point.

Social Media

Public complaints on Twitter/X, Facebook, and Instagram often get faster responses than private channels. Airlines have dedicated social media teams, and they don't like visible complaints. Tag the airline directly and be specific about the issue.

Tips for Getting Results

Document Everything

The moment something goes wrong, start documenting. Screenshot your booking confirmation. Photograph the departure board showing the delay. Save every receipt. Take notes with times, names, and what was said. This evidence makes your complaint credible and harder to dismiss.

Know Your Rights

Airlines bank on passengers not knowing the rules. Some key ones:

• If the airline cancels your flight or makes a significant schedule change, you're entitled to a full cash refund, not just a voucher
• If you're involuntarily bumped, the airline must compensate you up to 400% of your one-way fare (capped at $1,750)
• Airlines must refund checked bag fees if your bag is significantly delayed
• For tarmac delays over 3 hours (domestic) or 4 hours (international), airlines must let you deplane

Be Specific About What You Want

Don't just complain. State exactly what resolution you're seeking: a refund of $X, reimbursement for hotel costs, or whatever is appropriate. Give the airline a clear path to making things right.

Follow Up

If you don't hear back within the required timeframe, follow up. Reference your original complaint number or case ID. Mention that you've also filed with the DOT if you have. This signals that you're serious and won't just go away.

Keep Records of All Communication

Save every email, chat transcript, and letter. Note the date, time, and name of anyone you spoke with on the phone. If a phone agent promises something, ask them to send it in writing or note it on your reservation.