My experience on this so far is hiring a bike in Salzburg and taking my own to Majorca.
Hiring cost more than taking my own, even taking into account the cost of hire of a bike box, which I didn't have to do as I borrowed one. The easyjet fee is pretty low all told. I've also brought a frameset home from the USA in its delivery box with no issues.
Salzburg, I rang around ahead of time, found a place, when I got there they were set up all for MTB hire, not road bikes. I ended up with a specialised which fit well enough but was not well cared for, was poorer spec than my bike and had very poorly adjusted gears which was the last thing I needed in the mountains.
Majorca, I would have hired, but I was going in the summer and everywhere had said that the busy cycling season ends in May and they are then into maintenance mode. Looking at their ads though, they are well geared up for it. I borrowed the bike box, biggest issue was getting it in the car.
Half an hour reassembly at the other end in thr comfort of the hotel room, and a quick test ride. Then the joy of riding my own bike.
I've not tried with a recumbent yet, but will be taking my Cruzbike on CalMac ferries this summer. They take bikes , but no booking ahead as far as I know.