Your best bet is an Intel Macbook Air with 11.6" screen from a few years ago. They're even lighter and smaller than the current macbook airs. I have one myself running Linux Mint 22. Just make sure it has 8 GB of RAM (it works with 4 GB too, but you can't have too many tabs open). They sell for $200 refurbished.
I have the mid-2011 model, but that one has only 4 GB RAM. For 8 GB RAM you need to get to 2014 model or so. As long as it's Macbook Air with 8 GB RAM and 11.6 screen, you're in business.
It usually all works except the wifi in some models. The driver exists, and it's an available download in the official repos (just not in live cds, due to licensing), as long as you have a usb-to-ethernet adapter to install it. However, with Mint 22 I noticed that the wifi driver was finally included in the kernel and livecd by default.