Here's how one guy did it from the USA...offered to me as an option on a RoRo, but I ended up containerising mine.
The RoRo was eye-poppingly expensive, though not as expensive as the guy who opted to airfreight a Bell 430 to Europe in December last year to make sure he got it here before the Danish VAT window closed....and then they extended the availability!
For Chrissakes, I hope they fly the damn R22 across! Can anyone quote the last time an R22 had a mid-flight engine failure without some operator-induced screw up being a factor. For sure, do a bloody good A check before you set out, but do it for the adventure!