In general, when booking your flight to Barcelona, January is the cheapest month on average.
On average, from most locations, when planning your trip to Barcelona, try to book your flight in the region of 60 days in advance for the cheapest prices.
From most locations, the cheapest flights to Barcelona are found on a Tuesday. Booking a Friday departure is usually the most expensive.
In general, when looking for the cheapest flight to Barcelona, our data indicates that afternoon flights are the most cost-effective. midday flights tend to be the most expensive.