Why would I be denied boarding?

Denied boarding — also called “bumping” — happens when an airline sells more tickets than available seats. Airlines use sophisticated reservation systems to predict the number of passengers who are likely to show up for a flight. But sometimes, the systems aren't accurate, which results in an oversold flight.



People Also Ask

2. What is denied boarding?
  • for health, safety, or security reasons;
  • for failing to follow airline rules or instructions;
  • because a passenger does not have appropriate travel documents; or.
  • the passenger has failed to respect check-in and departure gate cut-off time limits.


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It's legal for airlines to overbook flights and the practice is more common than you might think. In fact, in the US, which provides the best statistics on the subject, the chance of a passenger being denied boarding because of overbooking is 1 in 1,000.

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Most airlines oversell flights, and sometimes this leads to airlines having to bump passengers. This can come in two forms — voluntary and involuntary denied boarding.

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Who should not travel by air? Diseases that prevent you from boarding a plane
  • Chronic obstructive pulmonary disease (COPD)
  • A recent stroke.
  • Infectious diseases, such as chickenpox, influenza or even COVID-19.
  • A recent surgery.
  • A pregnancy of over 28 weeks.
  • Angina (chest pain at rest)


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The most common reason is being “bumped” due to an overbooked flight, but there are other reasons you may be denied boarding, as well. This information is important for deciding if the airline is at fault if you decide to file a claim. Request an alternate flight to your destination.

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Most commercial carriers maintain a small but, by some accounts, growing list of passengers they refuse to transport. The reasons for being blacklisted can include disorderly conduct, refusal to comply with a crew member's instructions or abusive behavior toward an airline employee.

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The number of passengers denied boarding (not allowed to board flights they have tickets on) generally decreased in recent years, according to Department of Transportation (DOT) data. Combined, on an annual basis, voluntary and involuntary denied boardings account for less than 1 percent of actual passenger boardings.

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Who pays for the flight back to your home country if you are refused entry into the United States? The Airline is responsible to get you home and then it would be between you and them. If the person is denied to enter the country at Port of Entry (POE) then an individual has to pay his/her own flight expenses.

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Frontier Airlines bumped the biggest proportion of passengers of the 15 largest US carriers in early 2023. Of every 10,000 Frontier passengers, 3.73 were involuntarily denied boarding due to oversales, the DOT said. Allegiant, Delta, Endeavor, and Hawaiian didn't bump any passengers in the quarter, per the DOT.

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Infectious Diseases
An airline can deny boarding of any passenger who looks unwell, especially if they suspect the passenger might be infectious (infect other passengers).

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As long as the reason for denied boarding is not the fault of the passenger, the airline is liable to provide compensation.

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Airlines will typically assign the earliest boarding groups to passengers who are the most loyal. Previously, this was dictated by how many miles one flew, but nowadays, it's usually how much one spends on tickets.

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If you expect a full flight, try to board earlier – this will improve your chances to get cabin space for your luggage over your designated seat. Having to place your cabin luggage behind your seat or checking it in leads to a significant time loss.

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Most airlines oversell flights, and sometimes this leads to airlines having to bump passengers. This can come in two forms — voluntary and involuntary denied boarding.

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Some of the factors that airlines consider when deciding who gets bumped include check-in time, fare paid by the passenger, and frequent flyer status. It is important to note that these criteria must not be used in a way that prejudices or disadvantages any passenger unjustly or unreasonably.

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Passengers can inquire about overbooking by contacting their respective airlines or using apps that show available seats per cabin. If your flight is overbooked, airlines will usually ask for volunteers to give up their seats and offer compensation in return.

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Airlines are not required to conduct criminal background checks on all passengers. Airlines lack police authority. If a screening is conducted, it is done at the direction of the Transportation Security Administration (TSA).

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It's a list that has names of people who are on the terrorist watch list; are wanted by police/FBI, etc.; or have been blacklisted for attacking cabin crew or disobeying cabin crew requirements, either during the pandemic or at any time prior to or after same.

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