Unión Cariamanga Internacional operates a bus from Quito to Ambato once daily. Tickets cost $4 - $7 and the journey takes 3 h 8 min.
How to get from Quito to Ambato
From Quito bus to Ambato. 3 h 8 min $5. From La Mascota bus to Quito Terminal Quitumbe, Avenida Condor Ñan, Ejercito Nacional, Quitumbe, Quito, Pichincha, Ecuador then bus to Ambato. 3 h 10 min $4. From San Diego bus to Quito Terminal Quitumbe then bus to Ambato. 3 h 23 min $6. From Quito taxi to Ambato. 1 h 41 min $81. From Quito drive to Ambato. 1 h 41 min.