Since dozen of years, a lot of things had changed in Polish tourist market. Fifteen years ago, most of us were traveling by bus for many hours, just to get to the chosen destination abroad. Nowadays, it is different. Thanks to cheap airline companies, we have a lot better option available. There are several different carriers, which are offering plenty connections from any bigger airport in entire world. And flying by plane is very nice mode of transportation. it is fast, save and very comfortable. And also, we could book flight in very reasonable price!
But how to get cheap airline tickets? There is couple options for that. First, is to travel in the best moments. For example, if you like to book Warsaw Amsterdam connection for a penny, you cannot expect to buy it in the hot season. A lot of Polish people are working in there, so Christmas, Easter or summer time will be the most expensive. But if you be hurry, you can have a magnificent longer week at the beginning of the may in there, in very reasonable price. Also, if you better like to travel to the Barcelona, cheap airline tickets will be the most available for June and September. This months are also warm, but not as popular as July and August. 
Another option is to choose last or first minute offer. if you are working in Netherlands, and you like to visit your family in Poland for Christmas, it is still possible to book Warsaw Amsterdam connection in reasonable price. You just need to do it in first possible moment. Airline tickets are affordable not faster then six month ahead, so you better do it in there, it should cost you like nothing. And what to do, if you like to travel to the Barcelona not in June or September, but in August. Also, you would like to get cheap airline tickets for this occasion. it is still possible, but you will have to risk a bit. You can use a last minute option. A lot of airports are offering not sold seats in very reasonable prices, just two days before the flight. So you can wait for this date, but there is a possibility, that nothing to the Spain won’t be available. But in this situation, you can always choose another last minute destination.
If you like to fly by plane in very reasonable price, you need to be smart. Use a low season connections if you like to have the best offer. Also, when you prefer hot season, but not for very high price, you could use first or last minute option. The last one is very hazardous, but it is also the cheapest.