I recently did a wingfoil travel and my airline allowed a surfbag at 23 kg limit. So I fitted my board + foil parts + impactvest, pump etc.. in one mystic star wingfoil bag, and I fitted 3(!) North Nova wings, which have long bags, in a BIG 120L bag (singing rock tarp duffle 120) that could be carried on the back as well. Fitted clothes in the big bag too.
The singing rock bag is super sturdy (below on the left). Also can open on two sides (top and side) I have to say the mystic bag itself is a bit on the heavy side but with pockets etc for foil parts and all padding, it's really good.

I felt I needed a bit more of a bullet proof big bag instead of a huge but flimsy sports bag - essentially to protect the three wings (and not just to hold them together)