International or domestic terminal

I will arrive from Canary (spain) at15.30 with Ryanair to Stansted.If it is international flight do i have time to reach to the gates 40-59 at 16.15 departure(45min)?The flight is domestic or international?

I'm sorry but with all due respect, do you really need to ask whether a flight from Spain to the UK is a domestic or international flight? If so then that really is a bit worrying.

I assume the OP is wanting to transfer flights at Stansted. Ryanair at Stansted (and indeed Stansted generally) is point to point - so in order to transfer flights you would have to collect baggage, leave and come back in.

I don't THINK there is any facility for airside transfer even with hand baggage only. From Canary Islands in particular you would need to clear customs as STN would be your first port of entry into the EU (although Canary Islands are Spain they are outside the EU for customs purposes).

Would you be able to do it in 45 minutes? If the inbound flight was early, and there was no delay in passport control and no delay at security getting back airside, you MIGHT have a chance. I've got from car park to plane in 25 minutes once at Stansted and it's not uncommon on an incoming RYR to get through quickly. But miss the next flight at your peril - you probably wouldn't get a refund. If the next flight were really cheap I might book it, but also have the later one booked.