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. In this post I’d like to take a look at that topic more broadly, and specifically talk about what compensation you’re due in the event that you’re involuntarily denied boarding from a flight.
In this post:
Why do airlines oversell flights?
Airlines use complicated models to decide how many seats to sell on a particular flight. However, almost across the board, they’ll sell more seats than actually exist on a plane. Why? Because they know that typically some passengers won’t make the flight.
Some passengers may show up to the airport too late, while other passengers might cancel their tickets last minute, while other passengers may miss their connection due to flight delays. Airlines use incredibly complex models to forecast these kinds of things, and most of the time, they work out perfectly. However, airlines aren’t going to get stuff right all the time, and as a result, there are occasionally situations where more passengers have checked in than the plane has seats.
Sometimes airlines even sell seats when they know it’s likely that they’ll need to bump people. Why? Because they’d rather take cash for an expensive, last minute ticket, and then give someone an airline credit for taking a different flight.
There are also a few other possible reasons for a flight being overbooked. For example, it could be that an airline has to transport crews somewhere as a priority to work another flight, or that a flight is weight restricted due to weather, cargo, etc.
Passengers are typically bumped from a flight in one of two ways — voluntarily or involuntarily.

How does a voluntary denied boarding work?
When an airline knows that a flight is likely to be oversold, staff are required to first solicit volunteers. Sometimes airlines will ask at check-in, and other times they’ll ask at the gate. When it comes to a voluntary denied boarding, there are no regulations as to what you get.
A voluntary denied boarding is a win-win, since someone is getting something in return for taking a different flight, and everyone is happy. It’s a negotiation process, and compensation typically comes in the form of a voucher from the airline (though nowadays Delta sometimes gives out gift cards that can be used as debit cards).
If you’re having to overnight in a city as a result of this, the airline will typically give you a hotel room as well.
I’d say the average compensation is for an airline credit in the range of $200 to $1,000. How high the offer goes depends on how long you’ll be delayed, how many other people are interested in the bump, how badly the airline is oversold, etc.
So it’s not unusual for a gate agent to first make a low offer, see if anyone accepts it, and then go higher if people don’t. Nowadays gate agents have a bit more latitude to ensure that they’re minimizing involuntary denied boarding, and we’ve even seen some stories of Delta going as high as $10,000 in compensation, in some really extreme situations. Many frequent flyers will seek out bumps, given that they can be quite lucrative.

How does an involuntary denied boarding work?
When airlines can’t find volunteers and still have more passengers than seats, they need to involuntarily deny people boarding. Airline have clauses in their contracts of carriage allowing them to do this. Furthermore, airlines all have procedures they use for determining who gets bumped. Some airlines bump the people who don’t have seat assignments. Other airlines decide based on who checked in last. Others decide based on status and the booking class you have.
Do note that the number of passengers being involuntarily denied boarding is very low, and it’s generally well under one person for every 10,000 seats.
If you’re involuntarily denied boarding, the Department of Transportation regulates what you’re entitled to (this of course applies to travel from and within the United States). Here are the rules, as published by the DOT:
- If you are bumped involuntarily and the airline arranges substitute transportation that is scheduled to get you to your final destination (including later connections) within one hour of your original scheduled arrival time, there is no compensation
- If the airline arranges substitute transportation that is scheduled to arrive at your destination between one and two hours after your original arrival time (between one and four hours on international flights), the airline must pay you an amount equal to 200% of your one-way fare to your final destination that day, with a $775 maximum
- If the substitute transportation is scheduled to get you to your destination more than two hours later (four hours internationally), or if the airline does not make any substitute travel arrangements for you, the compensation doubles (400% of your one-way fare, $1,550 maximum)
- If your ticket does not show a fare (for example, a frequent flyer award ticket or a ticket issued by a consolidator), your denied boarding compensation is based on the lowest cash, check or credit card payment charged for a ticket in the same class of service (e.g., coach, first class) on that flight
- You always get to keep your original ticket and use it on another flight; if you choose to make your own arrangements, you can request an “involuntary refund” for the ticket for the flight you were bumped from, and the denied boarding compensation is essentially a payment for your inconvenience
- If you paid for optional services on your original flight (e.g., seat selection, checked baggage) and you did not receive those services on your substitute flight or were required to pay a second time, the airline that bumped you must refund those payments to you
Let me just emphasize that the cash compensation applies specifically to situations where you’re involuntarily denied boarding due to an oversell situation. This wouldn’t apply if you simply misconnect, if you arrive at your gate too late, etc.
I should also mention that if you are involuntarily denied boarding, gate agents will often just try to give you a voucher, unless you explicitly ask for the cash compensation. Now, in some cases passengers may prefer a voucher, like if your ticket was very cheap, and the voucher is for a significantly larger value. But you at least have the option of receiving cash.

Bottom line
Passengers are entitled to cash compensation in the event of an involuntary denied boarding. In the United States, this compensation can range from 200-400% of your one-way cash fare, up to a certain limit. The catch is that many airlines won’t even offer that compensation unless you specifically ask, and will instead try to give you a voucher.
Hopefully you don’t end up in a situation where you’re involuntarily denied boarding, but if you are, at least know what you’re entitled to.
Have any OMAAT readers been involuntarily denied boarding from a flight?
1990, you are doing a lot of posting on this subject but avoiding my NP question …. are you avoiding me by any chance?
I’m passionate about air passenger rights legislation; that’s it. Just a fellow traveler who wants to be compensated when the airlines screw me (and others) over. Really that simple. I admire what the EU/UK, Canada, etc. has done, and wish we had an equivalent in the US.
Excellent evasive response Ben …. :-)
Thank you ….
Oh, so you’re literally doing the thing Ben told you not to do… ok, he gave you a warning last time. Let’s see how it goes this time.
Rest assured, this is not my site (or yours); I’m just an occasional commenter who cares about this particular issue.
If Ben wants to remove any of our comments, he can and he will. We’re guests here, lest you forget.
Right Ben, we all understand where you are coming from, thanks for the grin …. :-)
Why tempt the fates?
@Ben Schlappig — Hadn’t you explicitly warned @AeroB13a about this before?
Airlines deliberately overbook , therefore airlines ought to refund 100% of the purchase price for an involuntary removal , PLUS a courtesy flight to the same destination .
By deliberately overbooking , they are scamming .
So you're saying that the current compensation of 200-400%, plus the flight to the destination, is too generous?
Yes, Alert, they are scamming. And they try to get away with it by offering credits, or getting you to accept their scams without them compensating you.
1990. are you “Scamming” the OMAAT readers?
Could you actually be on the OMAAT staff?
If so, which one? …. I have my suspicions …. :-)
Aero, didn’t Ben already ask you not to impersonate/insinuate others already?
Don't overthink this. It makes perfect sense when you consider he's got Asperger's syndrome.
Asperger's describes a neurodevelopmental disorder characterized by significant difficulties in social interaction and nonverbal communication, along with restricted, repetitive patterns of behavior and interests.
Dave, that’s some nice ‘unlicensed practice of medicine’ you got goin’ on there, ‘doctor.’ Got any thoughts on the topic at hand, or you want me to falsely diagnose you and Aero with dipshit-itis?
The comments above crack me up, thank you folks for the entertainment.
I have been accused of many things in my life but never of being an Asperger’s sufferer …. there is a first time for everything so it seems. I’m so lucky to be diagnosed by Dr Dave and just to prove his point I will repeat …. “Every day is a school day”, thank you for enlightening me Dr Dave.
On second...
The comments above crack me up, thank you folks for the entertainment.
I have been accused of many things in my life but never of being an Asperger’s sufferer …. there is a first time for everything so it seems. I’m so lucky to be diagnosed by Dr Dave and just to prove his point I will repeat …. “Every day is a school day”, thank you for enlightening me Dr Dave.
On second thoughts, has it not occurred to anyone how alike the posts by 1990, resemble very closely those of Ben? Surely Dr Dave, you will have noticed the neurodevelopment disorder characterised by the similarities in posts, yes? Now I am certain that the syntax expert Plain Jane, will have noticed too?
Raw nerves or being found out, may be causing some to feel uncomfortable presently. Perhaps I am overthinking this situation, such fun to be had, thank you all.
Aero, I’m not Ben; he’s warned you about such false accusations before.
Elections have consequences
All thanks to Putin!
Icarus, you’re not wrong. Putin clearly assisted in 2016 and 2024, and continues to destabilize Western democracies by using an online army of trolls and bots. We need to call it out when we see it.
Bullshit. "Clearly assisted". What a dope. "Armies of trolls and bots" destabilize democracy!? Wow!!
Eskimo, how’s the weather in Novosibirsk these days? Psh.
In the US if passengers have to be offloaded due to a change of configuration, it’s not considered denied boarding whereas in the U.K./EU it clearly is.
Good point. This is why we need updated regulations in the USA to fix these loopholes, once and for all, so that passengers cannot be screwed over by the airlines. Ultimately, the airlines are making business decisions, and we, the passengers, pay the price. Not right.
@Ben - why not cover EC261 as part of the article?
And EC261 clearly mentions that you're eligible if you misconnect because of the airline's fault
That’s not denied boarding. It’s delay compensation.
Actually no sorry you're right.
EU261 covers it all. We do need new air passenger rights legislation in the USA.
The current administration in America does not support any consumer protections. You voted for that.
‘You’ kinda depends; in the 2024 U.S. Presidential election, approximately 77.3 million Americans voted for Donald Trump, while a total of approximately 79.2 million votes were cast against him for other candidates. Most Americans do support consumer protections; special interests, like the airline lobby, A4A, clearly do not.
We really need air passenger rights legislation in the USA, akin to EU/UK 261, Canada’s APPR, even Mexico, Thailand, and India have better protections and compensation schemes for passengers harmed by airlines’ failures to operate or provide services to ticketed passengers. C’mon folks, we deserve better.
No, such regulations do not raise ticket prices or bankrupt airlines (see ULCCs like Ryanair in Europe still offering dirt-cheap fares). No, travel insurance isn’t enough (as many events under the airlines control aren’t often covered). Yes, it needs Congress to act. Yes, passengers need better lobbyists. *sigh*
The odds of someone being IVB are very, very rare. If you're traveling during peak times to a destination you do not want to be late to simply check in early to secure a seat assignment (T-24) and arrive at the airport a little early. Airlines typically bump those passengers that checked in last and do not have a seat assignment.
It's really very easy to avoid.
Sounds like you’re an expert, George. But, for most folks, they don’t know (not should they have to know) the ‘tricks’ to avoid getting ‘screwed’ by the airlines. This is yet another reason why we, in the US, need actual better air passenger rights legislation. Yet, folks like yourself keep giving the airlines a pass. I don’t get it. Even if you’re a Key, like, American still can screw you over; you’ll just get a...
Sounds like you’re an expert, George. But, for most folks, they don’t know (not should they have to know) the ‘tricks’ to avoid getting ‘screwed’ by the airlines. This is yet another reason why we, in the US, need actual better air passenger rights legislation. Yet, folks like yourself keep giving the airlines a pass. I don’t get it. Even if you’re a Key, like, American still can screw you over; you’ll just get a nice ‘buggy’ ride after, which doesn’t help as much if you were expecting to be at your destination in a reasonable time…
I only fly airlines with CUSTOMER RESPECT - that EXCEED the minimum requirements. Example, I get onboard and am greeted by my NAME, thanked for my BUSINESS, and showered in gifts. This is how business is done!!
So true. In many asian countries, there is a Charge called CRIMINAL DISRESPECT that you can be charged with!
Sorry folks replied to MY OWN comment. Didn't even realize that but would I said just resonated with ME so needed to reply
Troll off, mate
Yours is the obvious comment of a resident website troll, uncle. Read your comment again and weep!
Aero, we may not agree on much, but at least we agree that ‘trolling the trolls’ is the best approach. UncleRonnie is one of those fellas who tries to intimidate other commenters into self-censoring. The only response to such calls is more speech. ‘Thank you for your attention to this matter.’ Also, please wear a suit.
I read this same article at The Other Place yesterday
@Ben - You need to stress that this applies only in the USA.
In other parts of the world, local regulations apply and you could have different entitlements.
Precisely, Shawn. The US regulations are very weak compared to global ones (EU, Asians, etc)
Doesn't matter!!!! USA is best! MAGA!
Well said, Sean M. and Darryl. Even in Africa (where I recall Sean used to/still was COO of an airline), passengers are treated better by airlines as it relates to their rights and consumer protections. We deserve better in the US, and passengers need to advocate for themselves, because no one else is, and these companies (airlines) count on us to give up.
Not sure why United is pictured. They have had a no-overbooking policy since the Dr. Chong incident.
You referring to Dr. Dao (personal hero, took one for the team, got knocked-the-f-out, then defamed in an airline-backed smear campaign, UA3411)?
This is plain wrong. United stillniverbooks afternthe Dao incident. They just have a better automated, proactive policy to offer better compensation so that people take voluntary boarding.
Bbt, well, apparently United learnt that lesson the hard way…
It can be considered criminal corruption if this happens, which you can refer to criminal trial and sue for damages of up to $250000USD.
Sounds like a lot of extra work, no guarantees, and a win for lawyers, not most passengers. We need actual air passenger rights legislation so a baseline of compensation is guaranteed for affected passengers. That way, we, passengers avoid tedious, uncertain litigation. Besides, these adhesion contracts, like the contract of carriage for most airlines, often force you to arbitration, anyway, which is not ideal as that is slanted in the airlines’ favor.