Originally Posted by EUnomad

I recently discovered that some airlines don't even have an agreement with themselves (Ryan Air). Ryan Air just sells direct legs, and will not connect flights.

E.g. If you want to fly from CRL to London, you actually must book a flight to Glasgow, then a separate booking from there to London -- and it's the same airline! You must manually transfer your bags, and you're at risk of losing out if the first flight impacts the second, just as if it were two non-cooperating airlines.

So you can actually find more Ryan Air itineraries on dohop.com than you can on Ryan Air's very own site.

Just for fun, go to dohop.com and search for a flight from CRL to FNI. The cheapest often turns out to be 3 different Ryan Air bookings.