To sue an airline, start by complaining in writing to the carrier and the Department of Transportation, check your contract of carriage for deadlines and arbitration clauses, and then file either in small claims court (for lost bags, denied refunds, or bumping compensation) or in state or federal court for larger disputes and injury claims. How to sue an airline successfully depends less on the strength of your grievance than on three things most passengers overlook: federal preemption of state law claims, short deadlines buried in the ticket contract, and the Montreal Convention’s caps and venue rules for international flights.
Complain Before You Sue
Contact the airline’s customer relations department first. Put the complaint in writing, include your confirmation number and flight details, and keep copies. Many disputes resolve here, and skipping this step weakens your position later.
If the response is unsatisfactory, file a complaint with the DOT’s Office of Aviation Consumer Protection. Airlines must acknowledge DOT complaints within 30 days and respond in writing within 60.1U.S. Department of Transportation. Air Travel Complaints The DOT will not award you money or resolve your individual dispute, but it tracks patterns for enforcement and the complaint creates a paper trail that helps in court.
Read the Contract of Carriage First
Every ticket comes with a contract of carriage, and airlines are allowed to include claim restrictions inside it, including internal notice deadlines and shortened time limits for filing suit.2eCFR. 14 CFR Part 253 – Notice of Terms of Contract of Carriage Some require you to notify the airline within a set number of days after an incident before you can sue at all. Miss that window and your claim dies regardless of its merits.
Pull the contract from the airline’s website and look for three things: notice-of-claim deadlines, forum selection clauses telling you which state or court you must file in, and mandatory arbitration provisions that may block court access entirely. If you find an arbitration clause, an aviation lawyer can tell you whether it’s enforceable against your specific claim.
What You Can Actually Sue For
This is where most passengers get blindsided. The Airline Deregulation Act bars state and local laws “related to a price, route, or service of an air carrier.”3Office of the Law Revision Counsel. 49 U.S. Code 41713 – Preemption of Authority Over Prices, Routes, and Service Courts read that language broadly, and it blocks many state consumer protection and negligence claims against carriers.
Two big categories survive. In American Airlines v. Wolens, the Supreme Court held that breach of contract claims are not preempted because they hold the airline only to promises it made itself. Personal injury claims from in-flight accidents or ground incidents also generally survive, because the Deregulation Act targets economic regulation, not safety. Claims that really attack the quality of service, like emotional distress from a delay, face a much harder preemption fight.
Breach of Contract
Buying a ticket creates a contract. Canceled flights, dishonored reservations, and undelivered baggage are potential breaches, but the strength of your claim depends on what the contract of carriage actually promises. Vague language like “we strive to provide excellent service” is not enforceable. Specific commitments are.
Since 2024, DOT rules require automatic refunds when a flight is canceled or significantly changed and the passenger declines alternative transport. A significant change is three or more hours on a domestic flight, six or more on an international one.4U.S. Department of Transportation. What Airline Passengers Need to Know About DOTs Automatic Refund Rule Refunds must go out within seven business days for credit card purchases and 20 calendar days for other methods.5Federal Register. Refunds and Other Consumer Protections Refusing a required refund violates federal law and strengthens a breach of contract claim.
Involuntary Denied Boarding
When an airline oversells and bumps you against your will, federal regulations set the minimum payout based on how late you reach your destination:
- Arrival within one hour: no compensation required.
- Domestic one to two hours late (international one to four): 200% of the one-way fare, capped at $1,075.
- Domestic more than two hours (international more than four): 400% of the one-way fare, capped at $2,150.
These are floors, not ceilings, and payment must be by check or cash the same day unless you agree to a voucher.6eCFR. 14 CFR 250.5 – Amount of Denied Boarding Compensation for Passengers Denied Boarding Involuntarily Refusal to pay, or pressure to accept a lower-value voucher, is a suable wrong.
Negligence and Injury
Airlines owe passengers reasonable care. Turbulence injuries where the crew failed to activate seatbelt signs, slip-and-falls in the boarding area, and harm from improperly secured overhead bins are typical negligence claims. You’ll need to show the airline knew or should have known about the hazard.
Federal aviation regulations govern maintenance, pilot training, crew rest, safety briefings, and emergency equipment.7eCFR. 14 CFR Chapter I – Federal Aviation Administration A violation isn’t automatic proof, but courts treat compliance with these rules as a benchmark for reasonable conduct, so a documented breach is powerful evidence.
Deadlines That Kill Cases
Missing a deadline is the fastest way to lose a case you’d otherwise win.
International flights under the Montreal Convention have a strict two-year cutoff from the date of arrival, the date you should have arrived, or the date transportation stopped.8U.S. Department of State. Montreal Convention Courts treat this as absolute. After two years, the right to damages is gone.
Domestic deadlines depend on the state and the claim. Personal injury statutes run one to six years, with two or three most common. Breach of contract windows are usually longer. If a federal employee’s negligence is involved (an air traffic controller, for instance), the Federal Tort Claims Act requires an administrative claim to the agency first, and missing that step permanently bars the case.9Federal Aviation Administration. Torts and Part 9 Start counting from the date of the incident.
Where to File
Two questions decide the court: does it have authority over your kind of case, and does it have authority over the airline? Get either wrong and the case is dismissed.
Domestic Flights
State courts handle most breach of contract and negligence claims. Personal jurisdiction usually exists in any state where the airline regularly does business, which for major carriers is nearly everywhere. Federal court is available if the claim arises under federal law, or if you and the airline are from different states and the amount at stake exceeds $75,000. Federal district court filing fees are $350.10Office of the Law Revision Counsel. 28 U.S.C. Chapter 123 – Fees and Costs
International Flights
The Montreal Convention limits venue to four places: where the airline is headquartered, its principal place of business, where the ticket was bought through an airline office, or the passenger’s final destination.8U.S. Department of State. Montreal Convention For a U.S. resident on a round-trip international ticket, the final destination is usually home, which typically keeps the case in a U.S. court.
Small Claims Court Is Usually the Right Answer
For lost luggage, denied refunds, and bumping compensation, small claims court is the practical choice. Amounts fall within state limits, which range from $2,500 to $25,000. Procedures are informal, filing fees are often under $100, and cases resolve in weeks.11U.S. Department of Transportation. Air Travelers – Tell It to the Judge
The trade-offs: you can only recover money, not force a policy change. Many small claims courts bar attorneys, so you argue the case yourself. And if the airline doesn’t do business in your state, the court may lack jurisdiction, which matters more for small regional or foreign carriers than for national airlines.11U.S. Department of Transportation. Air Travelers – Tell It to the Judge
Winning is not collecting. If the airline ignores the judgment, you may need enforcement steps. Most airlines pay rather than absorb the bad publicity.
Filing a Full Lawsuit
If your claim tops the small claims limit or involves serious injury, you’ll file in state or federal court. The complaint identifies the parties, describes what happened, sets out the legal basis, and states what you want. Include flight numbers, dates, and dollar figures for your losses.
After filing, you serve the airline with the complaint and a summons. Airlines must maintain a designated agent for service of process with the DOT.12Office of the Law Revision Counsel. 49 U.S. Code 46103 – Service of Notice, Process, and Actions The DOT publishes the list, and serving that agent is the most reliable route.13U.S. Department of Transportation. Airline Agents for Service of Process Service can be in person, by certified or registered mail, or by electronic transmission. Bad service is one of the easiest grounds for dismissal.
In federal court, the airline has 21 days after service to file an answer or a motion to dismiss, or 60 days if it waived formal service.14Legal Information Institute. Federal Rules of Civil Procedure Rule 12 – Defenses and Objections State deadlines are similar. If the case survives a motion to dismiss, it moves into discovery.
Discovery
Discovery is the phase where both sides exchange evidence, and for airline cases it’s where you get access to what the carrier controls: maintenance logs, crew schedules, internal communications, training records. The airline gets your records too, including medical files if you’re claiming injury. Written questions under oath, document demands, and depositions of airline employees are the main tools. Discovery often decides whether a case settles. Records showing a regulatory violation or a pattern of similar incidents push airlines toward settlement; thin evidence pushes the other way.
What You Can Recover
Compensation depends on the claim type and whether the flight was domestic or international.
Domestic Claims
Compensatory damages cover actual losses: ticket cost, replacement items for lost bags, hotel bills from cancellations, missed connections, lost wages. Physical injury adds medical expenses and pain and suffering. Punitive damages exist in theory but are rare against airlines because proving malice or reckless indifference is difficult.
International Claims Under the Montreal Convention
The Montreal Convention caps damages for international flights. As of December 2024:
- Passenger death or injury: 151,880 Special Drawing Rights (about $202,500). Up to this level the airline is strictly liable. Above it, the airline can escape liability by proving it took all necessary measures.
- Baggage loss, damage, or delay: 1,519 SDR (about $2,000) per passenger.
- Delay in passenger transport: 6,303 SDR (about $8,400) per passenger.
Limits apply per passenger, and dollar equivalents move with exchange rates.15International Civil Aviation Organization. 2024 Revised Limits of Liability Under the Montreal Convention 1999 The practical takeaway for baggage: valuable items belong in your carry-on.
Most Cases Settle
The large majority of airline lawsuits that survive a motion to dismiss settle before trial. Settlement gives certainty and speed. Trial is expensive and unpredictable, and airlines have experienced legal departments that make it exhausting for individual plaintiffs. Negotiations tend to accelerate after discovery, when both sides can see the evidence clearly. If the airline’s records back your account, you have leverage. If they don’t, expect a lower offer. For most passengers, settling makes economic sense unless the damages are substantial or the principle justifies the cost.