My question is has anyone successfully tried flying on Ryanair with bike box etc and got any tips of what worked and what didn’t?
I've flown extensively to Europe with budget airlines, most recent a few weeks ago was on Ryanair.
Specific to Ryanair:
They are the most expensive for the bike fee at £60 e/w. Others have been ramping up their prices the last couple of years. BA is no longer free as they now have a hand baggage price, but you still get the bike on at the same price as a suitcase.
Ryanair are a bunch of sharks and I will never fly with them again.
Other than that, they are much the same as all the others for taking a bike on, no problems with that side.
General tips for any airline:
Weight limit is a generous 25 kg. Rock up at the desk, put the boxed/bagged bike on the scales. Make sure there is something to tie the luggage tag around.
Try not to let them stick the counterfoil to your passport, the glue never comes off, but make sure you keep it.
Take the bike to oversized luggage.
At the destination, you will have to look for the oversized drop area, though some smaller airports just chuck it on the conveyor.
Sometimes you will be asked if you've let the tyres down, just say yes.
You are not supposed to put anything other than the bike in the box/bag. This is rarely an actual issue. Obviously you have to put tools, etc in there as they won't let them through as hand baggage. Very occasionally I've had to open the bag for an airline employee to check. When they ask what the other stuff is I just say tools, bike kit/spares. It has been fine.