Used up all your annual leave for 2019 but trying to keep those winter blues at bay by planning next year's holidays?
Well the good news is that planning ahead could actually help you bag the best bargains for cheap flights, according to research by online travel agency Opodo .
The firm looked at average prices for return flights from the UK and Ireland for both short-haul and long-haul, to determine when you should be booking your flights, and the best times of the year for nabbing the cheapest fares.
Now, they've shared their top three tips for bagging the best bargains, whether you're looking for early bird deals or leaving it a little late.
We take a look at their advice below...
Looking for holiday packages instead? We've got guides for cheap holidays to Spain , Greece , the Caribbean and the Maldives , as well as top tips for nabbing all-inclusive holiday deals .
1. Book in January
According to the report, January had the cheapest average price for flights with tickets around £241.
Of course this isn't surprising, as the first month of the year is when a lot of travel firms slash prices and host flash sales - so it's well worth keeping your eyes peeled for a deal.
You can also check out our Holiday Deals page which we update with all the latest offers we think you'll love.
Just avoid booking in July if you can - this proved to have the highest average price of flights at £344.
2. Sunday is not just for lie-ins
Yes, you can still enjoy those lazy mornings and hearty Sunday Roasts, but leave some space in your day for holiday planning as Sunday is the cheapest day of the week to book a flight, with an average global ticket price of £574.
However if you prefer to keep the Monday blues at bay by booking a trip, then you won't necessarily pay a hefty price, as this proved the second cheapest day of the week with an average price of £586.
3. It's all about your destination
Whatever time of the year you're booking, there are some windows where you could find bargains or nab the best value deals - go too early and you risk missing out on a deal, but too late and you could end up paying extra.
Luckily, Opodo has found the optimal time to book depending on your destination...
Short-haul: Aim to book approximately 50 days in advance.
The USA: Book approximately 36 days in advance.
Asia: Book approximately 30 days in advance.
Africa: Book approximately 70 days in advance.
You can find out more on the Opodo website .