You've left booking your flight later than planned. You search the route, see the price and wonder what happened. The same trip seemed much cheaper a few weeks ago.
It can feel backwards. An empty airline seat becomes worthless the moment the aircraft takes off, so shouldn't airlines be desperate to sell their remaining seats cheaply?
Sometimes they are. But airline pricing is more complicated than simply reducing the price as departure gets closer.
Last-minute flights are often more expensive because airlines adjust fares according to demand, remaining seat availability and the types of travellers likely to book close to departure. As lower-priced fare options sell out, the remaining seats can be offered at higher prices.
That doesn't mean every airfare rises as departure approaches. Genuine last-minute bargains do happen. The problem is that waiting for one is a gamble, not a reliable way to save money.
Why Are Last Minute Flights More Expensive? The Quick Answer
| Question | Quick answer |
|---|---|
| Why do last-minute flights often cost more? | Cheaper fare inventory may have sold out, fewer seats remain and demand can still be strong |
| Do airlines automatically raise prices near departure? | No. Prices are dynamic and can move up or down depending on demand and remaining inventory |
| Why not sell every empty seat cheaply? | Airlines balance the risk of an empty seat against the chance of selling it later at a higher fare |
| Can last-minute flights ever be cheaper? | Yes. Unsold inventory and weaker-than-expected demand can occasionally produce lower fares |
| Is waiting until the last minute a good strategy? | Usually not if you need a particular route, date or flight |
How Airline Ticket Pricing Actually Works
The first thing to understand is that an airline doesn't necessarily sell every economy seat on a flight for the same price.
You could be sitting beside someone travelling in the same cabin, on the same aircraft, to the same destination, and discover that you paid very different amounts for your tickets.
That isn't necessarily because one of you found a secret booking trick. Airlines manage seats through different booking classes and fare products, with varying prices, conditions and availability.
A lower-priced fare might be available when the flight first goes on sale. As bookings come in and that inventory disappears, the next available fare can be more expensive.
So when somebody searches for a flight two days before departure, the airline isn't necessarily adding a simple 'last-minute fee'. The traveller may be seeing a completely different set of remaining fare options.
Economy Seats Aren't All Sold at the Same Price
Think of an economy cabin as a collection of seats that can be sold under different fare categories rather than one big bucket with one fixed price. Airlines can make a limited amount of lower-priced inventory available, then sell other inventory at progressively different price points. Fare conditions can vary too, including baggage, changes, cancellations and other inclusions.
As the flight fills, those cheaper options may disappear. That's one reason a flight can appear to 'jump' in price. The aircraft hasn't suddenly become more expensive to operate because you searched on Wednesday instead of Monday — the lower fare you saw earlier may simply no longer be available.
What Is Airline Revenue Management?
Airline revenue management is the process of managing seat availability and pricing to try to maximise the revenue earned from a flight.
Airlines have an unusual product. A hotel can sell tonight's empty room tomorrow as a different night's stay. An airline can't sell yesterday's empty seat. Once the aircraft door closes, any unsold seat on that flight has lost its opportunity to generate passenger revenue.
That creates a balancing act. Price seats too high and the airline risks flying with empty space. Price too many seats too cheaply and it may miss the opportunity to sell some of them for more to travellers who are willing to pay a higher fare.
Revenue management systems are designed to navigate that tension using booking patterns, demand, remaining inventory and other information.
Why Do Airlines Charge More Close to Departure?
There isn't one single reason. Several forces can push the remaining fares higher as the departure date gets closer.
1. Cheaper Fare Options May Already Be Gone
This is often the simplest explanation. Travellers who booked earlier may have purchased the lower-priced inventory. By the time you search, only higher fare options remain. That can make it look as though the airline has deliberately increased the price purely because the departure date is close, when part of what you're seeing is a change in available inventory.
2. There Are Fewer Seats Left
Imagine a flight with 180 seats. Several months before departure, the airline still has plenty of capacity to sell. A few days before departure, perhaps only a small number of seats remain. If travellers are still actively searching for that flight, there may be little reason to heavily discount those final seats. Scarcity matters, particularly on popular departure times, during school holidays, around major events and on routes with limited services.
3. Last-Minute Travellers Can Be Less Price-Sensitive
Someone planning a holiday six months away has options. If Tuesday is expensive, they might fly Wednesday. If this week is expensive, they might travel next month instead. A traveller who needs to be in Melbourne tomorrow morning may not have that freedom — they could be travelling for work, attending an event, dealing with a family situation or responding to an unexpected change of plans. In economic terms, that traveller may be less price-sensitive because the need to travel matters more than getting the lowest possible fare.
4. Demand Can Stay Strong Right Up to Departure
A nearly full flight isn't automatically a problem for an airline. It can be evidence that demand is healthy. If people are still trying to buy the few remaining seats, discounting them heavily may make little commercial sense. This is why the relationship between time and airfare isn't as simple as 'the closer you get, the cheaper unsold seats should become'.
If Empty Seats Are Worth Nothing, Why Don't Airlines Discount Them?
This is where airline pricing gets interesting. Yes, an empty seat produces no passenger revenue once the aircraft departs. On the surface, selling that seat cheaply seems better than leaving it empty. But the airline has to consider what happens before departure too.
Suppose an airline routinely cut every unsold seat to a bargain price the day before a flight. Travellers who had flexibility would quickly learn that waiting could be rewarded. Some people who might otherwise have booked weeks earlier could delay their purchase, hoping for the predictable last-minute discount. The airline also doesn't know with certainty that the seat will remain empty — a traveller willing to pay more may still appear.
So the decision isn't simply 'cheap sale or empty seat'. It's closer to: sell the seat cheaply now, versus hold the seat and potentially sell it for more. Airlines make versions of that decision across thousands of flights and many different fare categories. That's why a few empty seats at departure don't automatically mean the airline made a pricing mistake.
Can Last Minute Flights Ever Be Cheaper?
Yes. Last-minute flights can sometimes be cheaper. Airfare pricing isn't a staircase where the ticket price automatically rises every day until departure. If a flight has more unsold inventory than expected, demand is weak or market conditions change, a lower fare can sometimes appear close to departure. That is why genuine last-minute flight deals exist.
A last-minute bargain is possible. Waiting until the last minute as a strategy for getting a bargain is risky. The distinction matters.
If you're flexible and would be happy not to travel if the fare never falls, waiting might be a gamble you're willing to take. If you absolutely need to be on a particular route on a particular date, the calculation is very different.
When Are Last Minute Fares Most Likely to Hurt?
Some trips leave very little room for a last-minute gamble.
School Holidays
Families tend to travel within the same limited windows. When popular flights fill, waiting can leave you choosing between expensive fares, inconvenient departure times or no suitable seats together.
Major Events
Concerts, sporting events, festivals and conferences can concentrate demand around very specific dates. If the event is the reason for the trip, your flexibility is already limited.
Popular Business Travel Times
Flights that suit business schedules can attract travellers who place a high value on arriving at a particular time. That can keep demand strong close to departure.
Routes With Limited Frequency
If a route only operates once or twice a day, there are fewer alternatives when one service fills. High-frequency routes can sometimes give a last-minute traveller more options.
Peak International Travel Periods
Christmas, European summer, Japan's popular seasonal periods and other high-demand travel windows can reduce your ability to simply switch to another cheap flight.
Should You Wait Until the Last Minute to Book?
If your goal is simply to get the cheapest possible airfare, deliberately waiting until the final few days is usually a poor strategy. You might get lucky. You might also watch the lower fare disappear and be left paying considerably more.
Waiting becomes particularly risky when your travel dates are fixed, you're booking several passengers, the route has limited flights or you're travelling during a busy period. If your trip is optional and you're extremely flexible, that's different — you can afford to wait because walking away from an expensive fare is still an option.
For more on timing a booking to your advantage, see our guide to the best time to book flights from Australia.
What Can You Do If You Have to Book at the Last Minute?
Sometimes there isn't a choice. You need to travel soon, so the economics are interesting but they don't solve the immediate problem. A few things can help:
- Compare different departure times. A morning flight and an evening flight on the same route can have very different remaining fare inventory.
- Check nearby dates if you can. Moving the trip by even one day can expose different prices.
- Compare airlines. One carrier's cheaper inventory may be gone while another still has useful options.
- Consider sensible connections. A connecting itinerary may cost less than the remaining direct flights, but make sure the saving is worth the extra travel time.
- Look at the whole fare. Baggage, airport transfers, fare conditions and connection times can turn an apparently cheap ticket into poor value.
- For international travel, check entry requirements immediately. A cheap fare isn't useful if you can't meet passport, visa or transit requirements in time.
Last Minute Flight FAQs
Last-minute flights can be expensive because lower-priced fare inventory may already have sold out, fewer seats remain and demand from travellers who need to fly can still be strong.
No. Airfares are dynamic and can move in either direction. However, waiting can leave you with fewer lower-priced options if cheaper fare inventory sells out.
Airlines balance the risk of an empty seat against the possibility of selling it later for a higher fare. Predictable last-minute discounting could also encourage some flexible travellers to delay booking.
Yes. Lower fares can occasionally appear when demand is weaker than expected or seats remain unsold. It isn't guaranteed.
They can, but there is no reliable rule that fares fall the day before departure. On popular flights, the remaining options may instead be more expensive.
Airlines sell seats through different fare and booking categories. Passengers can therefore pay different prices even when they are travelling in the same cabin.
Airline revenue management is the process of managing seat availability and pricing to try to maximise the revenue earned from a flight while accounting for demand and remaining inventory.
Not by themselves. Some late-booking travellers, including business travellers, can have less flexibility and therefore lower price sensitivity. But remaining inventory, overall demand, route characteristics and airline pricing decisions also matter.
Not generally. Turning up at the airport isn't a reliable way to access a cheaper fare, and waiting that long can leave you with very limited availability.
Only if your trip is flexible enough that you're comfortable with the fare rising or the flight becoming unavailable. If you need a particular flight or date, waiting is a risk.
Need Help With a Last Minute Flight?
When you're travelling at short notice, the cheapest fare on screen isn't always the most practical option. Connections, baggage, flight times, airport changes and fare conditions can matter even more when you don't have much time to work with.
If you'd rather not wade through fare classes and connection times on a tight deadline, the iFly team can do the legwork — weighing up what's actually available and finding you the best possible fare to get where you need to be on time.