Check out when the festivals happen. Late June/early July is probably the absolute best time to go.

Iceland Airways is one of the few airlines that flies to Reykjavik, so you won’t have much of a choice. Book in advance to save money.

I’m afraid your wording is a little muddled but if you are asking about connections from Poland to Iceland check the Iceland Express flights from Warsaw and Kraków. Those are definitely the cheapest ones to Iceland.

also, if you’re asking about connections from Poland to Iceland maybe you should post this question under Poland as well.. many Poles have visited Iceland.

Have fun in Iceland.. Just remember once you get there, NOTHING is cheap. I went in February, and though it was dark most of the time, the weather was quite mild. The Northern Lights is something to behold I’ve heard, but most of the time it was overcast and rainy..

June through mid August are the nicest times of the year, but airfare and hotel rates are very expensive. I’ve heard September is extremely windy and should be avoided. The Iceland Airwaves festival in October is a great time, although the weather is a little cold. April or May might be your best bet, as the weather will be mild and the rates won’t be as high as the peak summer season.