From the Quito airport to Otavalo we can arrange a taxi in a large vehicle for $40 one way.
Or you can catch a bus from the nearby town of Pifo to Otavalo:
Bus Line Cita Schedule from Pifo to Otavalo/Ibarra
At our hotel we can arrange bus trips or taxis to anywhere you need to go in Ecuador. In the airport the airport taxis will often charge considerably more than the prices we can get with local taxis just outside the airport!