In general, when looking for the cheapest flight to Poznan, try to choose a flight departing in March for the best deal.
From most locations, booking your flights to Poznan around 49 days prior to your departure date finds the best deals.
From most locations, the cheapest day to fly to Poznan is Tuesday. Most users found that departing on a Saturday was most expensive.
Typically, cheap prices to Poznan are most often found for morning flights. Cheap prices are less likely for afternoon flights.