I'm thirteen. I'm afraid of travelling alone. Is this normal?

So I'm traveling to Istanbul, Turkey in July. It's a direct flight from Montreal, Quebec (its new) but I'm still scared. What if I miss my flight? Or get lost? Or even worse kidnapped? My parents think that I'm overreacting but I still worried. Is this normal? And can I overcome this fear? BTW, I'm troaveling on Trans-Canadian Airlines. (Air Canada)