That’s the wrong way of looking at an å.
It’s not just an a with decoration. It actually has different pronunciation and is typically replaced with aa if no å is available. (I’m neither Swedish nor Norwegian, so not 100% sure, but it’s what happened to Erling Haaland).
Similarly, you would replace a German ä with ae. So if my name was Bäcker, it would be wrong to spell it Backer on a ticket. Baecker would be the way.
Yes I’m aware it’s not an a with decoration jfc. I’m saying for computer entries that garble things, I wouldn’t care about matching it up so perfectly (with dropped whatever those things are called) as to not allow someone to board a plane.