Here's a quick story of my one and only Space-A adventure ...
I needed to get from Norfolk, VA to the Seattle, WA area. I had very little money, and was trying to make a wedding (both very bad times to travel Space-A).
Boarded a flight supposed to take me (and four others) from Norfolk to San Diego, with a stop overnight in Willow Grove, PA. Imagine our suprise when we awake in PA to find the plane nowhere in sight. The plane has headed to Florida to do something more important, and by the way, no other flights scheduled to go out for at least a week.
The nearest place to catch Space-A flights is Jersey, so the four Officers rapidly jump in a cab leaving me to suck wind. I convince the duty driver to give me a ride up to Jersey, which is awesome. I meet up with the Officers who show great concern for my wellbeing.
From Jersey I find a plane headed to McChord AFB, which is perfect. We stop in Mountain Home, Idaho to pick up some equipment. The equipment can't be loaded on the plane, so they inform us that the plane will be stuck there indefinately. The nearest civilian airport is Boise, which is a long way away, and no luck with the duty driver this time. Suddenly the plane fixes itself and we get to McChord, yeah!
Now, the trip back was less eventful. The plane I got on was headed to Dover, Delaware, where (the flight crew assured me) lots of planes headed down to Norfolk. We get to Delaware, the flight crew disintegrates, leaving the pilot and me there and the field a ghost town. Luckily the pilot was cool enough to give me a ride to the local civilial airport, where I had missed the flight to Norfolk, couldn't rent a car (too young), so had to get a hotel room for the evening.
The next day I bought a commercial ticket to get back to Norfolk before my leave ran out.
In short, mine was a nightmarish experience that now I would expect, but back then I had not counted on at all.
Total saved: One return trip airfare.
Total cost: One night in the BEQ, one night in a hotel, one one-way plane ticket, and four days of travel.