Friend of mine recently flew to Hawaii and filled out the customer survey they send after the trip.
Something interesting in the response.

"We will be implementing additional strategic changes in the coming months that we believe will continue to improve our operation. Most notably, we’re routing more airplanes “out and back,” so they will return back to the same hub where they originated. By dedicating aircraft to a particular route, we will minimize the disruption caused by issues in other parts of our flying network (for example, aircraft delayed or canceled by weather)."

Just wondering if they have started this yet.

I've seen it on the 756 fleet in Houston. Jet starts at IAH, goes somewhere, comes back.

If your trip continues (beyond a 1-day), you will swap planes; usually at the first stop.

It starts next month.

30% "out and back" right now will change to 70%.

This is just the airplanes, not necessarily the crews.

Gee, just like we used to do long time ago...back to what works after jeffry.