Departure time
Airlines
Fares are the lowest prices found recently and can change when you click through. You book on the airline's or travel agency's website. AirTriply may earn a commission at no extra cost to you.
Lowest fare$117
Cheapest monthOctober 2026
Typical flight time5h 17m
Direct flightsNo
Lowest fare by month
Airlines on this route
Frequently asked questions
What is the cheapest month to fly from Chicago to Ontario?
October 2026 has had the lowest recent fares, from $117 one way.
How long is the flight from Chicago to Ontario?
A typical flight takes about 5h 17m.
Are there direct flights from Chicago to Ontario?
No direct flights were found recently. Most trips include a stop.
Where do I book my ticket?
AirTriply compares fares from airlines and travel agencies. When you choose a deal, you book on the seller's own website.
Popular routes
Chicago → NashvilleChicago → Fort LauderdaleChicago → St LouisChicago → AtlantaChicago → PhiladelphiaChicago → DallasChicago → DenverChicago → Las VegasChicago → WashingtonChicago → BostonChicago → Los AngelesChicago → BaltimoreChicago → MiamiChicago → PhoenixCheap flights to OntarioCheap flights from Ontario
