Chicago to Ontario ๐บ๐ธ
Cheapest fare
$106
Fastest
5h 15m
Direct from
No direct
Dates tracked
16
Cheapest fare
$106
Wed, Feb 3 ยท 1 stop ยท 7h 21m ยท Alaska Airlines
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$106 is cheaper than 80% of departure dates on this route.
This is a low price for this route.
$106$135
Price calendar
Cheapest round-trip fare by departure day Cheap Average Pricey
October 2026
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Price trend
Price alert
Cheapest day to fly
Wednesday
Averages $191, vs $272 on Thursdays.
Work-hours calculator
This flight to Ontario costs you 7h 4m of work.
Same money as
1
SUV fuel tanks
6
large pizzas
8
cinema tickets
18
fancy coffees
Airlines on this route
Alaska Airlines
from $106 ยท 1 dates
Frontier Airlines
from $114 ยท 13 dates
Southwest Airlines
from $146 ยท 2 dates
Destination guide
Discover Ontario
About Ontario
Ontario is a city in southwestern San Bernardino County, California, United States, 35 miles (56 km) east of downtown Los Angeles and 23 miles (37 km) west of downtown San Bernardino, the county seat. Located in the western part of the Inland Empire metropolitan area, it lies just east of Los Angeles County and is part of the Los Angeles metropolitan area. As of the 2020 census, the city had a population of 175,265.
Text from Wikipedia โ Ontario, California, licensed CC BY-SA 4.0.
All dates
Every fare, by date
| Departs | Return | Airline | Stops | Price |
|---|---|---|---|---|
| Sat, Oct 24 | Tue, Oct 27 | Frontier Airlines | 1 stop | $237 |
| Sat, Oct 24 | Sat, Nov 14 | Frontier Airlines | 1 stop | $230 |
| Sun, Oct 25 | Mon, Oct 26 | Frontier Airlines | 1 stop | $237 |
| Mon, Oct 26 | Thu, Nov 5 | Southwest Airlines | 1 stop | $183 |
| Tue, Oct 27 | Thu, Oct 29 | Frontier Airlines |
Also cheap
More from Chicago
FAQ
Chicago to Ontario: answers
How much is a flight from Chicago to Ontario?+
The cheapest fare we see right now is $106 one way on Wed, Feb 3 with Alaska Airlines.
Are there direct flights from Chicago to Ontario?+
We haven't seen a direct fare recently; the best options have 1+ stop.
How long is the flight from Chicago to Ontario?+
The fastest itinerary we track takes about 5h 15m door to door.
What is the cheapest day to fly to Ontario?+
Wednesday departures are the cheapest on average right now, Thursday the most expensive.
