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Guide · 6 min read · Published 2 November 2026

Who gets the seat when the aircraft is full

By Neil Middleton · Co-founder, UnityTrip

Written for the person who was told no: the rotational worker bumped from the company flight, the dependant refused a subsidised seat, the traveller who turned up and found the seat gone. The rules are your operation's. This page explains what they are made of.

A seat on a company aircraft has no fare, so something other than price has to say no when more people want to fly than the aircraft can carry. On a scheduled airline the price does that quietly: the seat goes to whoever paid for it. On your company's aircraft a rule does it, and if nobody has explained the rule to you, a no feels personal. Under a well-built rule it is not. Five parts of such a rule decide your seat, and every operation sets its own values for each of them.

The five things that decide your seat

Priority. Each passenger type and trip reason has a rank. A medical movement outranks everyone. A crew change usually outranks business travel, which usually outranks private travel on the same departure. When you were refused and someone else boarded, the first thing to ask is which rank each of you held. The ranking is the priority matrix. If you travel on business, the seat has no fare but the trip still needs an appointed officer's approval, the third of the three checks in the seat allocation guide.

Quota. An entitlement is capped: so many flights, which the policy calls sectors, in a period for you, your group or your reason. Your remaining quota should be visible when you book. A refusal that says quota used means the cap, not you. The quota is what makes a seat with no fare fair to share.

Booking window. Some passenger types may book earlier than others, so that the seats a rotation needs are protected until close to the date. If you could not book yet, the window had not opened for your passenger type.

Displacement. When a higher-priority traveller needs a full flight, the lowest-priority confirmed traveller is offloaded, told the reason, and rebooked on the next departure. Being displaced is the rule working.

Penalties and go-shows. A missed departure or a late cancellation costs points, scaled by how close to departure it was, because the seat flew empty. Enough points can suspend your self-booking for a while; a colleague can still book for you. The seat a no-show frees goes to a go-show, the prepared traveller on the standby list, often minutes before departure.

Put yourself on the manifest

Pick who you are. Watch where you end up.

The same 19-seat allocation engine the Policy Builder page runs, turned to face you. Choose who you are travelling as and when you book; the engine runs a departure with you in it and writes the reason for where you ended up. Switch the policy off to see what first come, first served would have done to the same demand. The picker runs the seat allocation only, the first of the three checks a booking passes; it assumes a business trip holds its approval, and booking windows are not simulated.

Simulated demand · real rules · a reference policy's values, not your operation's, with a medical movement ranked first · runs in your browser · no AI · nothing uploaded but an anonymous count of runs.

The aircraft · 19 seats · you are outlined in white

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Your seat
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Seats filled at departure

Decision log · your lines in white, and never dropped

What the rule asks of you

Book inside your window, turn up, and cancel in time when you will not fly. A late cancellation or a no-show is a seat that flew empty when someone else could have used it, which is why it costs points. If your self-booking is suspended for a while, a colleague or the travel desk can still book for you; the rule is built to end the no-shows, not your travel.

What a fair rule owes you

Three things. The rule, visible before you book, so that a no is never a surprise. The reason, when you are refused or displaced, in the record and not in someone's memory. And your place on the next departure, in priority order, not at the back of a queue. If your operation's system cannot show you those three, that is worth asking about.

One question for your travel desk

If this page described your flight, there is one question to put to the people who run it: does our system show who got the seat and why, and can I see the rule before I book? The people who run the aircraft have their own version of that question, on the operations page, and the rule itself is written out in the seat allocation guide.

Common questions

Why was I bumped from the company flight?

Because a traveller with a higher priority needed a full flight, and the rule offloaded the lowest-priority confirmed traveller: that is displacement. A medical movement outranks everyone; a crew change usually outranks business travel, which usually outranks private travel on the same departure. The rule owes you the reason, recorded, and your place on the next departure.

Why did someone who booked after me get the seat?

Priority, not order. A seat with no fare is allocated by passenger type and trip reason, so a later request with a higher rank boards ahead of an earlier one with a lower rank. First come, first served is what an operation runs when it has no rule, and it typically strands part of the crew the flight exists for.

What is a go-show?

A prepared traveller who takes a seat freed by a cancellation or no-show, often minutes before departure. If you are on the standby list, which is kept in priority order, a no-show's seat can be yours.

What happens if I do not turn up?

Penalty points, scaled by how close to departure the no-show was, because the seat flew empty. Enough points can suspend your self-booking for a period; a colleague can still book on your behalf, so essential travel continues. Rescheduling to a same-day departure usually carries no penalty, because the seat was not wasted.

I am a dependant. Why was my subsidised seat refused?

A subsidised seat is private travel that does not get approved. In most rules it boards on seats that would otherwise fly empty, so when the flight is full it waits. A dependant travelling on a quota entitlement is protected within that quota.

Can I see the rule before I book?

You should be able to. A well-built rule publishes the priority order, the quotas and the booking windows, and a good booking system shows your quota as you book. If your operation's rule lives in someone's memory, ask for it in writing; the seat allocation guide shows what it should contain.

Who decides, a person or the system?

The organisation decides the rule; the system applies it the same way to everyone and writes the reason. A person can still approve an exception, and that approval is recorded too. What the system removes is the decision nobody wrote down.

Go deeper

For the people who run the flights

If you own the rule rather than live under it, the seat allocation guide sets out all seven elements of the rule, the five above and the two the people who write it need, the free Policy Builder writes it down, and we can talk it through.