JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You should upgrade or use an alternative browser.
The case I’m thinking of getting is the ant esports box c air, since it supports a M-ATX motherboard and I can use my existing components with it.
Picture of the case:

Check your specific airlines baggage policies – dimensions, weight and max number of bags, allowed/restricted etc.
I may be wrong but they could allow it in check-in. I have brought the much smaller NUCs in check-in baggage without any issues.
I’d probably not do it if using a tower cooler, multi-slot discrete GPU and mechanical hard drive unless of course, you remove them during transportation. The chances of them ripping your board and/or getting damaged is very high, especially in check-in.