Is the volcano in iceland effecting flights to turkey?
There is no way to predict that accurately in such long advance. The situation changes several times per day and is constantly being re-evaluated. Nobody knows how the situation will evolve. Nobody knows for sure if the volcano will still be erupting in June, how much ash there will be or in what direction the wind will blow the ash. Just make sure to follow up with the situation in the days before your flight. If the volcano will still be erupting in the days before your flight, then check with your airline the day before you fly and on the day of your flight. They should be able to tell you whether your flight is expected to be on schedule or whether it might be affected by the volcanic ash cloud.