How do I add a bike to a flight?

I'm curious, how exactly does one add a bike to a flight? Is there a specific process or procedure that needs to be followed? I've heard of people transporting bikes via air travel, but I'm unsure of the logistics behind it. Could you walk me through the steps required to safely and securely transport a bike on a plane? Additionally, are there any restrictions or limitations that I should be aware of when it comes to bike transportation via air travel? I'd appreciate any insights or tips you may have on this topic.