Recently I have flown on the D-AQUI (D-CDLH) from SXF to LEJ. It was a one hour flight and I really enjoyed it. The round trips only last 30 minutes while the duration of the "ferry" flights varies according to the distance. A round trip is about € 180 as far as I remember. Ferry flights are sometimes cheaper sometimes more expensive, but in any case you pay less € per minute. You get really good value for money on these flights but since you have to organise the transport to the departure and from the arrival airport for yourself the round trip might still be the cheaper option.
Actually I'm really used to flying, since I'm flying frequently, but this time I got a bit airsick again. But when I looked around it seemed like all other passengers felt the same way.
It was a beautiful day with temperatures around 25° C and therefore it was quite bumpy.
I don't know about the Starliner. I'll wait till it really flies.