We booked the flight instead of the ferry as it is much quicker, gives aerial views and is not far out in price.
It was a great experience flying over.
A bit of fun that they weigh the passengers as well as the luggage - but you can tell why when you consider the size of the plane.

We left our heavy luggage in their store at Invercargill.

On the way back, unfortunately, the weather was too bad to fly, so we were transferred to the ferry. Didn't really mind as we were not in a hurry and it gave us the experience of both routes.

However, the problem arose with the luggage left in Invercargill.
We were, of course, a lot later than we would have been by plane and, despite being told there would be someone there, everyone had gone home. Not ideal. Someone else in the group of passengers had even been picking up a rental car key from them - so couldn't.
Fortunately a different pilot with the company happened to come in and was able to sort us out - but that was by luck, not design.

I hope they have now sorted things out so this doesn't happen again - but just bear this possibility in mind when you leave things in their office.

We booked the coast to coast through Stewart Island flights. Most flights were cancelled that day due to low cloud in Oban but we were lucky that Mason nay was clear. The trip itself was great although visability very poor at times. The water taxi organised by SIF was on time. Two mix ups made the day difficult. We were told the water taxi would drop us at 6pm in Golden Bay where our B&B pick up was waiting. We were dropped close to 7 at the main wharf leaving our host waiting for some time at the wrong place. The second was that SIF were going to leave our overnight bag at their Oban depot. When we checked in they did not label it so despite being named the same as our flight ticket it didn't get loaded onto the plane and we were left wet and muddy from the walk with no clothes till the next day and no way to contact the now closed airline office. (Luckily our B&B managed to get hold of someone to find out what happened). There was no apology or explanation call. Very dissapointing and ruined what was otherwise a good day on Stewart Island.

We were a group of 11 friends tramping on stewart island. Everything was organised quickly via mobile phone..nothing was too much of a bother for the staff.