An airline seat allotment is an agreed allocation of seats on specified flights that an airline sets aside for a trade partner - typically a tour operator, consolidator or wholesaler - to sell under contract. The allotment fixes how many seats the partner may use, at what price, and by when unused seats must be given back.
Allotment is the language of the agreement; blocked seats are the result in the airline system. When people in the trade say "we have an allotment on that flight", they mean they hold a contracted share of its seats.
A short glossary of allotment terms
Allotment contracts use a common vocabulary even though the specifics vary:
- Allocation - the number of seats granted per flight or per date.
- Contract period - the dates the allotment covers, often a season.
- Release period - how many days before departure unsold seats revert to the airline.
- Utilisation - seats actually used as a share of seats allotted.
- Minimum utilisation - a threshold some contracts set, below which penalties or reduced future allocations may follow.
- Net rate - the price per seat to the allotment holder.
- Top-up - additional seats granted on request when demand exceeds the allocation.
Common types of allotment
Free-sale or non-committed allotment
The partner may sell seats up to the allocation and returns the unused balance at the release period without charge. Low risk for the holder, but airlines tend to offer these mainly to partners with a strong record.
Committed or guaranteed allotment
The partner pays for the allotted seats regardless of sales, sometimes with a partial release option. Higher risk, usually better price and priority on busy dates.
Hybrid arrangements
Part of the allocation is committed and part is free-sale, or the release period shortens as the season progresses. These reflect negotiation between the two parties rather than a standard product.
How release periods shape the business
The release period is the single term that most affects how an allotment is run. A long release period - say several weeks before departure - forces the holder to commit early, before late demand shows up. A short one lets the holder keep seats on sale into the final days.
Illustrative example: two operators each hold 20 seats on the same flight. One has a 21-day release, the other a 7-day release. Two weeks before departure both have sold 14 seats. The first operator has already had to decide about its six spare seats; the second can still sell them to last-minute agents.
This is why allotment holders track deadlines per flight rather than per contract.
How airlines judge an allotment
Airlines review allotments mainly on utilisation and timeliness. A partner that consistently uses most of its seats and releases the rest on time is in a strong position for the next season. Partners that hold seats until the release date and then return a large share may see allocations cut, because those seats could have been sold elsewhere at a higher fare.
Data quality matters here. A holder that can show departure-by-departure sell-through has a better basis for negotiation than one relying on a season total.
Allotment vs series vs fixed departure
The terms overlap. A series is often contracted as an allotment across recurring flights. A fixed departure is a tour or flight product built on an allotment for specific dates. The allotment is the contractual base; series and fixed departures are ways of packaging and selling it. Read more in what are fixed departure flights.
Managing allotments day to day
The daily work is counting: seats allotted, sold, named, released and ticketed for each flight, against each deadline. EazyPNR offers this as part of its B2B inventory tools; see the airline allotment system page for how allotments are recorded and shared with selling agents.
Key takeaways
- An allotment is a contracted allocation of seats on specific flights for a trade partner.
- Allotments range from free-sale with no penalty to fully committed.
- The release period strongly influences how long seats stay on sale.
- Airlines judge allotments by utilisation and timely release, which affects future allocations.
Frequently asked questions
Is an allotment the same as a block?
Closely related. The allotment is the agreement; the block is how the seats appear in the airline's inventory.
Can an allotment be increased during the season?
Often by request, as a top-up, if the airline has seats to spare. It is not guaranteed.
Who uses airline allotments?
Mostly tour operators, consolidators and wholesalers that can forecast demand on specific routes and dates.