Travelling from most locations, it is best to book your flight to Warsaw during the month of September for the best deal, although there are other times of the year which offer great deals as well.
In general, most flyers find the cheapest time to book a flight to Warsaw is about 60 days prior.
Most of our users find that booking their departure to Warsaw on a Wednesday is the cheapest. Conversely, departing on a Friday seems to be the most expensive.
On average you can find the best deals on plane tickets to Warsaw when looking for flights with morning departure times.