259﷼+ 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 4/19. 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.
What to know about flights from Ontario
Discover essential information about flights departing from Ontario, including flight schedules, destinations, airlines operating at the Ontario airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated April 2, 2025.
Good round-trip deal | 2,032﷼ or less |
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Find flights from Ontario
International flights from OntarioFind cheap international flights from Ontario based on historic user searches and pricing. Information updated on April 2, 2025.
Find cheap international flights from Ontario based on historic user searches and pricing. Information updated on April 2, 2025.
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.
Travel insights for flights from Ontario
Get recent, data-driven insights about flights from Ontario including ideal travel times, pricing trends, and more.
What is the cheapest month to book a flight from Ontario?
Currently, April is the cheapest month in which you can book a flight from Ontario (average of 3,146﷼). Flying from Ontario in June will prove the most costly (average of 4,934﷼). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.
What are popular destinations to fly to from Ontario?
From Ontario you can expect to find greater availability for the following destinations: San Francisco (82 flights per day), Seattle (81 flights per day) and Dallas (62 flights per day).
What is the cheapest place to fly to from Ontario?
The cheapest city to fly to from Ontario is San Francisco, with prices starting at 2,032﷼. Explore other affordable destinations below.
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Direct flights from California
Book a direct flight from one of these other cities located in California.
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 April 2, 2025.
Fly with Cheapflights
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
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?
Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and use a valid email address to enable the Price Alerts feature. That’s it!