Got back from my business trip to CZ/Prague/Liberec a couple of weeks ago. Not sure if this thread is just for PRG airport, or smoking in CZ in general.

While checking into the Sheraton in Prague, I asked the concierge if there were any cigar lounges in the area. He said that you could basically smoke just about anywhere in Prague. However, he mentioned that he doesn't notice anyone smoking cigars, and that I would probably get some "looks" from others. He was right. Wherever I went, I tried to find an empty spot, and always asked an employee there if it was ok to smoke a cigar. I only saw 2 other people smoking cigars my whole week there, and those were people walking on the street, not in a bar. Prague is a beautiful city, and the weather while I was there was just perfect. I return in mid November, and it will definitely be a lot colder at that time.