I know every person's body reacts differently to exercises. But, in a general sense, does this work out routine/schedule sound effective for weight loss? I just started it 2 weeks ago. I feel better physically, but I haven't weighed myself.

Sunday - 1/2 hour of cardio, hour of hot yoga
Monday - hour of Zumba, 1/2 hour lifting
Tuesday - 30-45 min lifting, hour of cardio kickboxing
Wednesday - hour of spinning
Thursday - Hour of a HIIT class (incorporates weights)
Friday - rest
Saturday - leisure physical activity (a walk, jog, hike, etc)

Summer is coming up, so I don't want to waste too much time with trial and error. Any suggestions would be greatly appreciated!!

Yes, your routine seems good. However, the only thing that matters is whether you can continue it or not. Having a great routine doesn't matter at all if you can't continue it for months without a break. I hope you'll be able to stick to it as the saying goes - "Be like a postage stamp. Stick to a thing till you get there".

Thanks! I love these classes, so, so far, I'm sticking with it. I'm seeing changes already!

I think it looks good- you have good variety, and you've built in a rest day. Plus it sounds like it's being effective!