For guests coming from LA / Orange County, you can drive or take the Amtrak Surfliner.
Check amtrak.com for train schedules.
If driving, allow anywhere from 2.5 HRS - 5HRS depending on your departure point and traffic.
For guests flying in from out of state, there are three options:
1. Fly directly into Santa Barbara Airport (SBA). Easiest, but probably priciest - check Google Flights.
2. Fly into Hollywood/Burbank Airport (BUR) and then drive or take the Amtrak to Santa Barbara/Goleta. There are several trains that go directly from Hollywood/Burbank Airport to Goleta in just over 2HRS check www.amtrak.com for schedules. If driving, allow anywhere from 2.5 - 3.5 hours depending on traffic.
3. Fly into LAX and then drive to Santa Barbara / Goleta. Allow 3 - 4 hours depending on traffic.