Flight prices can often go up during peak season, which usually falls during half term and the summer holidays.
Luckily, there's lots of ways to reduce the costs, including flying on a Saturday or saving hundreds by booking as a group.
EasyJet's Flexi fares could also help you out, aimed at business travellers, they usually cost at least double of a standard fare.
This is because they include great extras such as Speedy Boarding, Fast Track Security and seat selection.
However, another great thing they allow is unlimited date changes, which is perfect for families with school-age kids.
This means families could essentially book on the same route at a less busy time and then switch to dates they wanted, but only by doing a lot of research.
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Flexi fares cost more than a standard fare at the same time, but can be cheaper than booking a standard flight in the holidays.
Back in 2014, savvy traveller Steve Nowottny wrote about his experience on the Money Saving Expert website.
He told how he used the feature to book cheaper flights before school holidays started and then switched to a peak-travel date.
Steve said he managed to save over £400 for a family of three, but outlined some "important warnings" to be aware of at the time.
Firstly, he pointed out that you can only switch your ticket to a flight that still has availability, so you'll need to check there's plenty of seats left on the flight you want to switch to.
Secondly, EasyJet makes you wait 24 hours after booking a Flexi fares journey before you can move it, which he explained "makes the whole thing a bit of a gamble."
And lastly, the date you’re switching to must be no more than one week before or three weeks after the date of the original flight.
After his experience, he wrote: "It’s not the easiest trick in the book.
"You need to do your research, endure a nervous wait and there’s always a risk you might not get the exact dates you’re after.
"But we were able to save a whopping £431 while still travelling on the dates we wanted, simply by looking at the other fare options."
On the website EasyJet still have the option available under their Flexi fares tab.
It reads: "Unlimited changes to your flights with no extra fees.
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"New flight times must be between 1 week before and 3 weeks after original travel date."
Worth noting too that the Flexi fares aren't available on all routes and fluctuate in price just as standard tickets do, so it's always worth looking around for the best deals.
They're not always cheaper than standard flights in the school holidays either so make sure you do your research.
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