R1 980+ Cheap flights from Ontario
This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
ONT — CPT
Nov 11 — Nov 181
Find flights from Ontario within your budget
Find flights departing from Ontario that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 12 October 2026. In the last 7 days, Cheapflights users made a total of 7 457 451 searches
Fly to
Route
Depart
Return
Cheapest return flight
OntarioChicago
ONT Ontario - ORD Chicago O'Hare Intl
ONTORD
Ontario
Sat 7/11
7:00-13:04
Nonstop4h 04m
Chicago O'Hare Intl
Wed 31/12
0:00-22:00
Nonstop0h 00m
R1 980
OntarioChicago
ONT Ontario - ORD Chicago O'Hare Intl
ONTORD
Ontario
Tue 15/12
6:00-16:43
2 stops8h 43m
Chicago O'Hare Intl
Wed 31/12
0:00-22:00
Nonstop0h 00m
R2 228
OntarioChicago
ONT Ontario - ORD Chicago O'Hare Intl
ONTORD
Ontario
Sat 7/11
6:00-16:26
2 stops8h 26m
Chicago O'Hare Intl
Wed 31/12
0:00-22:00
Nonstop0h 00m
R2 228
OntarioChicago
ONT Ontario - ORD Chicago O'Hare Intl
ONTORD
Ontario
Tue 27/10
6:20-22:05
2 stops13h 45m
Chicago O'Hare Intl
Wed 31/12
0:00-22:00
Nonstop0h 00m
R2 607
OntarioChicago
ONT Ontario - ORD Chicago O'Hare Intl
ONTORD
Ontario
Wed 21/10
9:45-23:57
2 stops12h 12m
Chicago O'Hare Intl
Wed 31/12
0:00-22:00
Nonstop0h 00m
R2 706
OntarioChicago
ONT Ontario - ORD Chicago O'Hare Intl
ONTORD
Ontario
Thu 14/1
7:00-13:00
Nonstop4h 00m
Chicago O'Hare Intl
Wed 31/12
0:00-22:00
Nonstop0h 00m
R2 970
OntarioChicago
ONT Ontario - ORD Chicago O'Hare Intl
ONTORD
Ontario
Thu 10/12
7:00-13:11
Nonstop4h 11m
Chicago O'Hare Intl
Wed 31/12
0:00-22:00
Nonstop0h 00m
R2 970
OntarioChicago
ONT Ontario - ORD Chicago O'Hare Intl
ONTORD
Ontario
Thu 29/10
6:59-13:02
Nonstop4h 03m
Chicago O'Hare Intl
Wed 31/12
0:00-22:00
Nonstop0h 00m
R3 350
OntarioChicago
ONT Ontario - ORD Chicago O'Hare Intl
ONTORD
Ontario
Sun 18/10
7:00-13:10
Nonstop4h 10m
Chicago O'Hare Intl
Wed 31/12
0:00-22:00
Nonstop0h 00m
R3 449
OntarioChicago
ONT Ontario - ORD Chicago O'Hare Intl
ONTORD
Ontario
Wed 21/10
7:00-13:10
Nonstop4h 10m
Chicago O'Hare Intl
Wed 31/12
0:00-22:00
Nonstop0h 00m
R3 449
Showing 1-10 of 37 resultsSorted by cheapest first
Best time to book a flight from Ontario
Have a flexible travel schedule? Discover the best time to fly from Ontario with our price prediction graph.
ONT-CPT
ONT-ORD
ONT-RDD
ONT-DXB
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Travel insights for flights from Ontario
Get recent, data-driven insights about flights from Ontario including ideal travel times, pricing trends, and more.
ONT-CPT
ONT-ORD
ONT-RDD
ONT-DXB
What are popular destinations to fly to from Ontario?
From Ontario you can expect to find greater availability for the following destinations: Dallas (155 flights per day), Seattle (116 flights per day) and Atlanta (89 flights per day).
What is the cheapest place to fly to from Ontario?
The cheapest city to fly to from Ontario is Dallas/Fort Worth, with prices starting at R6 115. Explore other affordable destinations below.
Browse thousands of different options on Cheapflights for your next trip
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Direct flights from California
Book a direct flight from one of these other cities located in California.
Airports servicing Ontario
Fly out of one of these airports located in Ontario.
Fly from other United States cities
Consider departing from one of these cities also located in United States. Flight origins are based on user searches made on Cheapflights and were last updated on 12 October 2026.
Popular flight searches
Check out other popular destinations found by fellow travellers in 2026
Related info for your journey
Access useful and relevant information related to your journey from Ontario. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 12 October 2026.
Fly with Cheapflights
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How does Cheapflights help users find flights from Ontario?
When you search for this flight from Ontario, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the best flight for you.
Why should you use Cheapflights to find cheap flight tickets from Ontario?
Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Ontario for you. Better yet — we are completely free to use.
Can Cheapflights find flights from Ontario with no change fees?
Need flexible booking options for your flight from Ontario ? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.
Can Cheapflights notify me if prices for flights from Ontario become cheaper?
Of course! You can now track prices for flights from Ontario and get an alert from Cheapflights when they change. Click the bell icon next to the flight deals above and provide your email address to set up price alerts.