Cheap flights from Chicago to Ontario
From 235 USD — compare hundreds of airlines
Vuelos directosMás barato: 2026-07 · 177 US$
Precios por fecha
177 US$
07-07
Aerolíneas en esta ruta
Southwest Airlines
Preguntas frecuentes
What's the cheapest month to fly Chicago to Ontario?
Usually 2026-07, from 177 USD.
Are there direct flights from Chicago to Ontario?
We show both direct and connecting options — filter to compare.