₹ 4,881+ 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 29/7. 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 3 July 2025.
Cheapest one-way flight | ₹ 1,508 |
---|---|
Cheapest round-trip flight | ₹ 16,738 |
Cheapest airline | Frontier |
Most popular destination | London Heathrow (LHR) |
Good round-trip deal | ₹ 15,228 or less |
Good one-way deal | ₹ 4,187 or less |
Find flights from Ontario
Cheapest flights from OntarioExplore the most affordable flight options available from Ontario. Find the lowest fares based on data from user searches, with prices last updated on 3 July 2025.
Explore the most affordable flight options available from Ontario. Find the lowest fares based on data from user searches, with prices last updated on 3 July 2025.
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 3 July 2025. In the last 7 days, Cheapflights users made a total of 454,620 searches
Fly to
Route
Depart
Return
Price
OntarioSeattle
ONT - SEA
ONTSEA
Ontario
Fri 15/8
14:21-16:58
Nonstop2h 37m
Seattle/Tacoma Intl
Sun 17/8
21:30-00:15
Nonstop2h 45m
OntarioSeattle
ONT - SEA
ONTSEA
Ontario
Thu 7/8
06:00-11:35
1 stop5h 35m
Seattle/Tacoma Intl
Thu 14/8
05:00-12:40
2 stops7h 40m
OntarioSeattle
ONT - SEA
ONTSEA
Ontario
Mon 4/8
18:39-00:59
1 stop6h 20m
Seattle/Tacoma Intl
Wed 6/8
05:10-12:14
1 stop7h 04m
OntarioSeattle
ONT - SEA
ONTSEA
Ontario
Fri 18/7
06:25-09:13
Nonstop2h 48m
Seattle/Tacoma Intl
Tue 29/7
10:43-13:34
Nonstop2h 51m
OntarioSeattle
ONT - SEA
ONTSEA
Ontario
Wed 23/7
12:00-14:38
Nonstop2h 38m
Seattle/Tacoma Intl
Sun 27/7
21:30-00:15
Nonstop2h 45m
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Wed 6/8
13:34-01:00
1 stop8h 26m
Newark
Tue 12/8
06:30-12:32
1 stop9h 02m
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Tue 21/10
12:00-23:00
1 stop8h 00m
Newark
Wed 29/10
07:00-12:31
1 stop8h 31m
OntarioNewark
ONT - EWR
ONTEWR
Ontario
Wed 12/11
06:00-18:29
1 stop9h 29m
Newark
Sun 16/11
07:30-15:14
1 stop10h 44m
OntarioNew Delhi
ONT - DEL
ONTDEL
Ontario
Wed 27/8
05:10-21:30
2 stops27h 50m
New Delhi Indira Gandhi Intl
Wed 24/9
23:35-12:51
2 stops25h 46m
OntarioMumbai
ONT - BOM
ONTBOM
Ontario
Sat 20/9
06:00-08:50
2 stops38h 20m
Mumbai Chhatrapati Shivaji Intl
Tue 23/9
01:20-22:40
2 stops33h 50m
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, December is the cheapest month in which you can book a flight from Ontario (average of ₹ 62,597). Flying from Ontario in March will prove the most costly (average of ₹ 69,362). 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?
Ontario offers frequent flights to Seattle (126 flights per day), Denver (53 flights per day) and Dallas (52 flights per day).
What is the cheapest place to fly to from Ontario?
The cheapest city to fly to from Ontario is Houston Hobby, with prices starting at ₹ 4,187. Explore other affordable destinations below.
Airline reviews for flights from Ontario
Get insights into the airlines that provide service from Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing airline for your flight from Ontario. In the last 7 days, Cheapflights users made a total of 454,620 searches.
See what other customers who have flown with Delta, KLM, andQatar Airways from Ontario have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
Boarding
Overall
Comfort
Food
Entertainment
Reviews
Aaron,Oct 2024
LAX - LHR
Crew
Boarding
Overall
Comfort
Food
Entertainment
Reviews
Aaron,Oct 2024
LAX - LHR
Crew
Boarding
Overall
Comfort
Food
Entertainment
Reviews
Aaron,Oct 2024
LAX - LHR
Crew
Boarding
Overall
Comfort
Food
Entertainment
Reviews
Aaron,Oct 2024
LAX - LHR
Crew
Boarding
Overall
Comfort
Food
Entertainment
Reviews
Aaron,Oct 2024
LAX - LHR
Crew
Boarding
Overall
Comfort
Food
Entertainment
Reviews
Aaron,Oct 2024
LAX - LHR
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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 3 July 2025.
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How does Cheapflights help users find flights from Ontario?
900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight from Ontario today with Cheapflights!
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.