21 weeks for me.
24. But I felt flutters long before that.
I felt little flutters as soon as about 18 weeks? But it was so light I wasn't sure if it was or if I was imagining it. Definite kicks weren't till like 25 weeks
I was about halfway through before I really felt anything. I had a hard time feeling anything through out my whole pregnancy
About 24 weeks for me, and I did feel big movements until about 30 weeks!