If you have ever searched for flights during peak travel seasons, which are usually during the school holidays, you have probably noticed something frustrating. The exact same flight can cost hundreds of pounds more than it did just a few weeks earlier.
This often means paying much more and can feel unfair, leaving many people wondering why airlines charge so much more during peak travel periods.
The simple answer is supply and demand.
When more people want to fly than there are seats available, airlines increase their prices. It is the same principle used in many industries, from hotels and concerts to sporting events. Let's take a closer look at why this happens.
The biggest reason airfares rise during peak travel periods is that millions of people want to travel at the same time. School holidays, Christmas, Easter, and other major holiday periods create a huge surge in demand, where everyone seems to be searching for flights on similar dates.
Because airlines know these flights will be popular, prices usually increase as demand grows.
An airline can't simply add unlimited seats to every flight. Each aircraft has a fixed number of seats, and once they are sold, that's it. When thousands of travellers compete for those available seats, prices naturally increase.
On popular routes during school holidays, flights can sell out weeks or even months before departure.
Most airlines don't have one fixed price for every seat. Instead, they use a system called dynamic pricing. This means ticket prices change constantly based on factors such as demand, how many seats remain, the time left before departure, seasonal travel patterns, and competition from other airlines.
As more people book a particular flight, the remaining seats often become more expensive. That is why two people sitting next to each other may have paid completely different prices for their tickets.
Families are one of the biggest reasons prices rise during peak periods. Unlike many other travellers, parents often have limited flexibility because children need to attend school. This means airlines already know that more families than usual will be searching for flights during the same weeks every year. They know these periods are consistently busy, so prices are generally higher from the start.
Not every destination experiences the same increase in prices. Flights to popular beach destinations, theme parks, and famous tourist cities often see the biggest price increases because demand is especially high.
If lots of people want to visit the same place at the same time, airlines can usually charge more because they know the seats are likely to sell.
While demand is the main reason for higher prices, airlines also face high operating costs, including fuel, aircraft maintenance, airport fees, staff salaries, aircraft leasing, security and safety requirements, and more.
If these costs increase, airlines may adjust fares throughout the year. However, even when operating costs remain relatively stable, high demand during peak travel periods is usually the biggest reason ticket prices rise.
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