Just completed the outbound leg of the LAX-MUC flight with three Airtags - one on my keys and one in each of two suitcases. Here's how it went from LAX-ORD-MUC.
First is the baggage drop off at Terminal 7. Baggage appeared after a few minutes when we were cooling our heels in the lounge:

Later after boarding the plane, I could see this:

We took off, somehow the Internet was open on this flight and Find My showed this (Imagine the map moving quite quickly). Somehow my phone was actually able to ping the bags in the hold below my feet.

Landed in Chicago. Bags were off in the bowels of the airport already. They sat where indicated for nearly an hour.

Got to the gate and one of the bags was already at the plane. The other never updated.

In Munich, I still see a missing bag. I just figured not to panic, the guy driving the baggage cart was probably an android user.

A short while later, both popped up on the app and in a minute or two, the bags came out on the conveyor.

So that's it. An international trip using Airtags to track your luggage.
Sorry for the spartan post. I'm trying to work with an iPad and the new keyboard and MR just sucks making posts like this on it.
First is the baggage drop off at Terminal 7. Baggage appeared after a few minutes when we were cooling our heels in the lounge:

Later after boarding the plane, I could see this:

We took off, somehow the Internet was open on this flight and Find My showed this (Imagine the map moving quite quickly). Somehow my phone was actually able to ping the bags in the hold below my feet.

Landed in Chicago. Bags were off in the bowels of the airport already. They sat where indicated for nearly an hour.

Got to the gate and one of the bags was already at the plane. The other never updated.

In Munich, I still see a missing bag. I just figured not to panic, the guy driving the baggage cart was probably an android user.

A short while later, both popped up on the app and in a minute or two, the bags came out on the conveyor.

So that's it. An international trip using Airtags to track your luggage.
Sorry for the spartan post. I'm trying to work with an iPad and the new keyboard and MR just sucks making posts like this on it.