In general, when booking your flight to Manchester, May is the cheapest month on average.
On average, from most locations, when planning your trip to Manchester, try to book your flight in the region of 60 days in advance for the cheapest prices.
From most locations, the cheapest flights to Manchester are found on a Tuesday. Booking a Saturday departure is usually the most expensive.
Typically, cheap prices to Manchester are most often found for midday flights. Cheap prices are less likely for afternoon flights.