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₹ 4,019+ 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 16/11. 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 — DEL
12 Nov — 19 Nov1
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 13 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
Fastest return journey
OntarioSan Francisco
ONT Ontario - SFO San Francisco
ONTSFO
Ontario
Fri 6/11
09:25-10:55
Nonstop1h 30m
San Francisco
Wed 31/12
00:00-00:00
Nonstop0h 00m
₹ 5,646
OntarioSan Francisco
ONT Ontario - SFO San Francisco
ONTSFO
Ontario
Sat 7/11
05:45-09:25
1 stop3h 40m
San Francisco
Wed 31/12
00:00-00:00
Nonstop0h 00m
₹ 7,273
OntarioSan Francisco
ONT Ontario - SFO San Francisco
ONTSFO
Ontario
Fri 6/11
05:35-11:30
1 stop5h 55m
San Francisco
Wed 31/12
00:00-00:00
Nonstop0h 00m
₹ 7,273
OntarioSan Francisco
ONT Ontario - SFO San Francisco
ONTSFO
Ontario
Mon 9/11
16:00-22:45
2 stops6h 45m
San Francisco
Wed 31/12
00:00-00:00
Nonstop0h 00m
₹ 7,751
OntarioSan Francisco
ONT Ontario - SFO San Francisco
ONTSFO
Ontario
Mon 23/11
16:00-22:45
2 stops6h 45m
San Francisco
Wed 31/12
00:00-00:00
Nonstop0h 00m
₹ 7,751
OntarioSan Francisco
ONT Ontario - SFO San Francisco
ONTSFO
Ontario
Sun 22/11
05:00-11:25
2 stops6h 25m
San Francisco
Wed 31/12
00:00-00:00
Nonstop0h 00m
₹ 9,665
OntarioSan Francisco
ONT Ontario - SFO San Francisco
ONTSFO
Ontario
Sat 23/1
07:25-09:16
Nonstop1h 51m
San Francisco
Wed 31/12
00:00-00:00
Nonstop0h 00m
₹ 9,952
OntarioSan Francisco
ONT Ontario - SFO San Francisco
ONTSFO
Ontario
Mon 11/1
18:37-20:10
Nonstop1h 33m
San Francisco
Wed 31/12
00:00-00:00
Nonstop0h 00m
₹ 9,952
OntarioSan Francisco
ONT Ontario - SFO San Francisco
ONTSFO
Ontario
Thu 7/1
11:20-12:53
Nonstop1h 33m
San Francisco
Wed 31/12
00:00-00:00
Nonstop0h 00m
₹ 9,952
OntarioColumbus
ONT Ontario - CMH Columbus
ONTCMH
Ontario
Sat 7/11
12:16-23:30
1 stop8h 14m
Columbus
Wed 31/12
00:00-21:00
Nonstop0h 00m
₹ 13,301
Showing 1-10 of 60 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-DEL
ONT-SFO
ONT-CMH
ONT-HNL
ONT-JFK
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-DEL
ONT-SFO
ONT-CMH
ONT-HNL
ONT-JFK
What are popular destinations to fly to from Ontario?
Ontario offers frequent flights to 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 San Francisco, with prices starting at ₹ 21,784. Explore other affordable destinations below.
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Direct flights from California
Nearby airports
Other United States cities
Popular flights
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 13 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 13 October 2026.
Fly with Cheapflights
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How does Cheapflights help users find flights from Ontario?
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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?
Yes, we can. To see specific flights from Ontario with no change fees, users can toggle flexible booking options after using the search form above to find flights.
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.