We are flying to the island and taking a ferry back. I'm wondering which fwrry time to book. How many hours should we plan to spend on the island?
I would generally take the Inis Oirr and Cliffs Combi cruise from Doolin with a couple of hours on the island not sure what your plans are? Flying from Inverin and a ferry back to Rossaveal?? If you are flying get a return flight. If going Inis Oirr to Doolin and the Cliffs Combi you need to make sure you can get the bus back presumably to Galway?
2 hours to 2 days is the answer to how long on the island.
IMHO spend the night on whichever of the islands you visit.....