For a period of about 2 years, I washed dear husbands and my feather pillows in my modern front-loading washing machine, and with excellent results, however, extended drying cycles were needed to fully dry the pillows, which I didn't like putting my electric tumble dryer through.
I ended up searching high and low for the best pillow protectors I could find, and upon coming across these (image below), the days of bringing pillows in to have them dry-cleaned or laundering them at home in a regular washing machine was over.
In these pillow protectors, pillows will remain 100% clean and stain-free indefinitely. We've had ours for 3 years now and the brand new pillows I bought to go along with them are factory new.
Dri-Tec with the Air-X patches, is what you want to look for.
My remember my mom taking pillows apart as Lee, was saying, and washing the feathers by themselves in the bathtub, then squeezing out as much water content from the feathers as they could before re-stuffing the ticking, re-stitching, and finishing off the drying process in her electric tumble dryer.
Myself, I'd buy new pillows before I'd tackle such a job.
As for fiberfill pillows, Deb, I have no experience with them, but if I recall, most hotels use fiberfill pillows, and they're always lumpy and bumpy, which tells me that fiberfill pillows do not wash-up well.