But now, the exact month holidaymakers should pull out their laptops and start searching for flights has been calculated in Expedia's 2026 Air Hacks Report. And the cheapest month to book your flights is May - proving to be 21 per cent cheaper than the most expensive time of year, December. For domestic flights, January is the best time to start booking, whereas August is 26 per cent pricier. Or for even more savings, the cheapest day to fly is often a Friday, which is 18 per cent less than the most expensive day, Saturday. But, Saturday happens to be the most affordable day of the week to book business class flights.

Source: Daily Mail February 17, 2026 11:44 UTC