An airline seat allotment works as a timed cycle. The airline allocates a set number of seats per flight to a partner, the partner sells or sub-allots those seats to agents, unsold seats are released back to the airline at an agreed cut-off, and the remaining seats are named, ticketed and reconciled. Each step has its own deadline and its own financial consequence.
If you need the basic definition first, read what an airline seat allotment is. This article focuses on how the process runs day to day.
Stage 1: allocation by the airline
The cycle starts with a contract between the airline and the allotment holder, which may be a tour operator, wholesaler or consolidator. It sets the flights, date range, seats per flight, fare level and the terms that govern release.
Allocation is either hard or soft. A hard allotment is paid for or heavily deposited, and the holder carries the risk of unsold seats. A soft allotment can be returned without penalty up to the release date, so the airline carries more of the risk and usually charges a higher fare for it. Many contracts sit somewhere in between.
In the airline system, the seats are typically held in a group PNR or a dedicated inventory bucket that only the holder can draw from.
Stage 2: sub-allotment to agents
Holders rarely sell every seat themselves. They split the allocation into smaller pieces for agents or partner operators, which is known as sub-allotment.
- Fixed sub-allotments give a named agent a set number of seats per departure, with an earlier release date than the holder has with the airline.
- Free sale lets agents book from the shared pool until it runs out, with no seats reserved for anyone in particular.
- Request basis means the agent asks and the holder confirms manually, common when seats are scarce.
Stage 3: the release-back timeline
Release dates are layered. The agent must hand back unused sub-allotted seats to the holder first, giving the holder time to resell them before its own deadline with the airline.
Timings vary widely by airline, route and season, so the stages below are a typical shape, not a rule.
| Point in time | What happens |
|---|---|
| Agent release date | Sub-agents return unsold seats to the holder |
| Holder review | Holder pools returned seats and resells or reprices them |
| Airline release or cut-off date | Holder returns seats it cannot use, if the contract allows |
| Name list deadline | Holder sends passenger names for all retained seats |
| Ticketing time limit | Tickets issued and balance paid |
Stage 4: naming and ticketing
After the cut-off, the seats that remain are the holder's commitment. Names are added to the group PNR or split into individual PNRs, depending on the airline process, and tickets are issued before the ticketing time limit.
This is where errors become costly. A misspelt name or a missing document detail can mean a reissue fee or a denied seat, and ticketing outside the agreed fare conditions can lead to an ADM. Holders usually run a check pass on all names before transmission.
Stage 5: utilisation and reconciliation
Once flights depart, the holder reconciles what was allocated, released, ticketed and flown. Utilisation is commonly calculated as seats ticketed divided by seats retained after release, though some airlines measure it against the original allocation.
The reconciliation matters for two reasons. Financially, it confirms what is owed for deposits, used seats and any penalties. Commercially, airlines look at utilisation when deciding next season's allocation, and a holder with poor usage may see its block reduced or its terms tightened.
Illustrative example: a wholesaler with a weekly allotment reconciles each month. It finds that sub-agents released late on several dates, leaving no time to resell. Next season it moves the agent release date a few days earlier and asks for a smaller allocation on the weakest day of the week.
Where allotments go wrong
The common failures in an allotment cycle are tracking problems rather than commercial ones: release dates missed because they sat in a spreadsheet nobody checked, two sub-agents confirming the same last seat through different channels, names transmitted late or with errors, and no clear record of which agent released which seats and when.
A system that holds allocation, sub-allotment, release dates and live seat counts in one place removes much of the risk. EazyPNR is designed for that workflow; see the airline allotment system for how sub-allotments and release dates are handled.
Key takeaways
- An allotment moves through allocation, sub-allotment, release-back, ticketing and reconciliation.
- Hard and soft allotments split unsold-seat risk differently between airline and holder.
- Agent release dates should fall well before the holder's airline cut-off.
- Utilisation figures shape the allocation an airline offers next season.
Frequently asked questions
What is the difference between release date and name list deadline?
The release date is when unused seats can be returned. The name list deadline is when passenger names must be given for seats that are kept. They are separate dates and the release date usually comes first.
Can sub-agents hold seats past their release date?
Only if the holder agrees. Once the agent release date passes, the holder normally takes the seats back into its own pool so it can resell or release them.
How do airlines measure utilisation?
It depends on the airline and contract. Some compare ticketed seats with seats held after release; others compare against the original allocation, which is a stricter measure.