We've used SkyExpress for group travel to and fro CTS and Niseko now since 2014. Service has been by far a bit sketchy.
Pros:
- They are easy to book.
- They are on time. The driver has always been waiting for us at the appointed time and location.
- They get you from point A to B in a shorter amount of time than the buses.
- They bypass the welcome centre, bringing you directly to your accommodation.
- They can be only a tad more expensive than the buses if you've got the right number of people for the right skybus.
- They offer a 1 hr stop off at the supermarket in Kutchan for an additional cost, which may be useful for some.
- They allow a drop off at the Air Terminal Hotel in CTS, which is kinda nice if you're headed that way.
Cons:
- They are horribly inflexible. We have, like many reviewers here, suffered a late flight, and there was absolutely no way they would wait/ refund our booking, even though we alerted them 3 hrs before pickup. Luckily, we managed to get seats on one of the ski shuttle buses, which made for hasslefree transport, but extra money was spent, and the skybus fare was still lost.
- For what it's worth, the skybus 15 seater mini coaches are actually more uncomfortable than the the ski shuttle buses, and there have been occasions when we worry that there won't be enough space for people and luggage, and that's with us travelling with minimal equipment.
Would we use them again? Probably, only because we travel with a bunch of children and just want to get from point A to B in the shortest amount of time. We would also use the skybus in March when unpredictable weather is less likely.... but, the private ski shuttle buses do offer much better value and allowance for both luggage and delayed flights.