Right now, when Poland is part of EU since more then 10 years, Polish people are choosing plane a lot. Nothing surprising in that, cause prices of plane tickets are really cheap, because of tiny airline carriers.
Every single day, people are flying by planes to any countries on planet. It became much more common sort of transportation, then couple years ago. it is a lot more shorter, convenient and every now and then even cheaper then bus or railway. But if you want to go for your debut flight, you need to pay attention at your luggage. Cause there is many regulations, that you must to be conscious of, if you like to avoid some not nice moments during checking out before flight.