I’ve flown like that a few times, too. If both flights are in the same terminal and the first flight isn’t delayed, three hours is normal. Once, though, the flights were with different airlines. At check-in, they told me that I had to pick up my luggage and check it in again. That took an extra forty minutes, and it really stressed me out. You can check the Istanbul International Airport (IST) website for information on connecting flights. With a connecting ticket, your luggage usually goes straight to your final destination. However, if the airlines are different, this rule might not apply, so it’s best to check with the airline in advance. Overall, the airport is large but easy to navigate, and you can walk from one gate to another in twenty minutes. Which terminal does your second flight depart from?