For example, you can save up to £123 if you book a trip to Amsterdam 39 days before departure.
But long-haul travelers should organize and book a trip to New York 63 days in advance to save £294, while booking a trip to Auckland for 38 days will save £839.
Evan Day, UK Manager at Kayak commented : “ Now is the time to plan your holiday wisely to ensure you get the best value for money.
We've analyzed our flight research and pricing information to help you save the most money and find the best time to plan your vacation in 2023.
"For extra savings, consider setting up price alerts to get notified when prices drop on your favorite flights."
Consumer expert Harry Wallop tells Sun Online Travel why it's better to book and fly on different dates.
he said. "There are both peak seasons and peak days of the week, so it's not uncommon or uncommon to think that flight prices are determined by when you travel.
But surprisingly for those not in the industry, the price varies depending on the date of order.
According to figures calculated by the airline, the cheapest day to book a flight is Sunday.
“For domestic flights, if you book on a Sunday instead of a Friday, you'll save around 20%.
"It saves about 10% on international flights, which may not sound like much, but long-haul flights are often very expensive these days, some are £800 so you save £80, which is hundreds for a family of four." :