I wear AirPod Pros on flights and when walking over a busy freeway for lunch. The noise cancellation feature works really well. I can continue listening to music or podcasts at an indoor volume. The AirPod Pro does form a seal.

My only complaint is that something in the noise cancellation mic tends to wear out over time. After about 18–24 months of use, I start to hear an unpleasant high-pitch sound whenever I touch the mic opening on an earpiece. This could be related to dropping them, which is inevitable. I'm on my third set now.