Have you ever already had a flight ticket but were suddenly asked to move to another flight because no seats were available? This situation is known as flight overbooking. Although it may seem unfair, this practice is actually legal and commonly used by airlines worldwide.
What Is Flight Overbooking?
Overbooking is a condition in which airlines sell more tickets than the number of seats available on a flight. According to aviation observer Alvin Lie, if an aircraft has a capacity of 190 seats, an airline may sell up to 195 tickets for that flight.
This overbooking practice does not happen by accident; it is a long-standing business strategy that has existed since the early days of the aviation industry. In countries such as the United States, Australia, and across Europe, overbooking is legal and regulated by aviation authorities.
Why Do Airlines Overbook Flights?
Anticipating No-Show Passengers
The main reason airlines overbook flights is to anticipate passengers who do not show up, commonly known as no-shows. Former pilot and University of Nevada professor Dan Bubb explains that airlines make money when all seats are filled while the aircraft is cruising at altitude.
Operational Cost Efficiency
The aviation business is highly sensitive to time and cost. Regardless of how many passengers are on board, an aircraft must still operate according to schedule. Airlines must pay for fuel, crew salaries, airport fees, and various other operational costs even if seats are not fully occupied.
Calculations Based on Historical Data
Airlines use historical data and advanced statistical models to estimate how many passengers are likely to be no-shows. These calculations take into account factors such as flight time, day of the week, route popularity, and long-established travel patterns.
Other Special Conditions
In addition to no-show passengers, overbooked flights can also occur due to several special situations:
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Sudden aircraft changes: when the original aircraft is replaced with a smaller-capacity plane
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Flight consolidation: technical issues or bad weather cause multiple flights to be merged into one
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High demand: flights during peak hours, business routes, weekends, or holiday seasons experience extremely high demand
What Happens When a Flight Is Overbooked?
Option 1: Volunteer Passengers
Option 2: Involuntary Denied Boarding
If no passengers are willing to volunteer, the airline may be forced to select passengers to be offloaded or denied boarding involuntarily. The selection is usually based on:
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Frequent flyer status or customer loyalty
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Ticket class (economy, business, or first class)
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Check-in time (earlier check-in gets higher priority)
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Ticket type (promotional vs. regular tickets)
Passengers who are involuntarily denied boarding are still entitled to compensation in accordance with the regulations of the country or the airline concerned.
Overbooking Compensation in Several Countries
Indonesia
In Indonesia, passenger rights in cases of flight overbooking are regulated under Article 147 of Law of the Republic of Indonesia No. 1 of 2009 on Aviation. Article 147 paragraph (1) states that the carrier is responsible for passengers who are not transported as scheduled due to aircraft capacity limitations.
Compensation that airlines are required to provide to passengers affected by overbooking includes:
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Rebooking to another flight at no additional cost: The airline must arrange an alternative flight to the same destination without charging any extra fees.
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Meals, accommodation, and transportation: If there is no alternative flight to the destination on the same day, the airline must provide meals, hotel accommodation, and transportation costs.
Aviation observer Dudi Soedibyo explains that the type of compensation provided depends on how long the airline takes to transfer the passenger to another flight, ranging from snacks to full accommodation.
United States
The U.S. Department of Transportation regulates compensation based on the arrival time difference of the replacement flight:
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Less than 1 hour delay: No compensation
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1–2 hours delay (1–4 hours for international flights): Compensation of 200% of the ticket price, up to USD 675
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More than 2 hours delay or no replacement flight: Compensation of 400% of the ticket price, up to USD 1,350
In addition, passengers are entitled to rebooking, meals and accommodation costs, and in some cases, cash compensation.
European Union
EU Regulation 261/2004 governs compensation for passengers affected by overbooking, provided that the flight departs from an EU country, or departs from outside the EU to an EU country operated by an EU-based airline. Compensation may be provided in the form of flight vouchers or cash, depending on the airline’s policy and the flight distance.
Tips to Avoid Being Affected by Overbooking
There are several ways you can take to minimize the risk:
Check In Online Earlier
Checking in early signals to the airline that you are serious about taking the flight. Passengers who check in earlier have a higher chance of securing a seat and being placed on the airline’s priority list.
Choose a Regular Ticket
Passengers with regular tickets are usually given higher priority than those holding promotional fares. Flexible tickets also come with better rights and protections in the event of overbooking.
Reserve a Seat in Advance
Selecting and reserving a seat at the time of ticket purchase helps secure your status. It shows your commitment to actually flying on that specific flight.
Join a Loyalty Program
Being a member of an airline’s frequent flyer or loyalty program not only provides various benefits but also increases your chances of avoiding overbooking, as loyal customers are typically prioritized.
What Should You Do If You Are Affected by Overbooking?
Stay Calm and Listen to the Staff’s Explanation
If the airline announces an overbooking situation, listen carefully to the staff’s explanation. Make sure you understand the type of compensation offered, the alternative flight schedule, and any additional facilities you will receive.
Request a Denied Boarding Form
AirAdvisor CEO Anton Radchenko recommends asking the boarding agent for a denied boarding form. This document serves as important proof that the boarding denial actually occurred and affected your journey. Such documentation can be used to claim reimbursement for additional expenses caused by the disruption, including hotel stays, meals, or transportation.
Keep All Documents
Save your boarding pass, proof of payment, and all communications from the airline. These documents are essential if you need to file a claim or complaint later.
Know Your Rights
Carefully read the airline’s conditions of carriage. Airlines usually have passenger transport regulations and terms that are often overlooked. By understanding your rights, you can negotiate more confidently.
Negotiate Compensation
If you are asked to volunteer, don’t hesitate to negotiate. You may request cash compensation, a class upgrade on your next flight, lounge access, or a combination of these benefits.
Check Your Travel Insurance
If you have travel insurance, check whether overbooking is covered. This can help offset additional costs caused by delays or schedule changes.
Conclusion
Overbooking is a legal practice used by airlines to optimize revenue and operational efficiency. Although it can cause inconvenience for passengers, it is regulated by laws that provide protection and compensation rights for those affected.
