C$ 78+ Cheap flights from Ontario
This is the cheapest round-trip 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 | C$ 75 |
---|---|
Cheapest round-trip flight | C$ 91 |
Cheapest airline | Frontier |
Most popular destination | Toronto Pearson Intl (YYZ) |
Good round-trip deal | C$ 181 or less |
Good one-way deal | C$ 249 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 629,999 searches
Fly to
Route
Depart
Return
Price
OntarioSeattle
ONT - SEA
ONTSEA
Ontario
Wed 23/7
6:25 a.m.-9:13 a.m.
Nonstop2h 48m
Seattle/Tacoma Intl
Tue 29/7
7:30 a.m.-10:25 a.m.
Nonstop2h 55m
OntarioSeattle
ONT - SEA
ONTSEA
Ontario
Sat 16/8
5:21 p.m.-11:42 p.m.
1 stop6h 21m
Seattle/Tacoma Intl
Sat 23/8
8:27 p.m.-11:09 p.m.
Nonstop2h 42m
OntarioSeattle
ONT - SEA
ONTSEA
Ontario
Tue 12/8
10:03 a.m.-2:25 p.m.
1 stop4h 22m
Seattle/Tacoma Intl
Tue 19/8
5:25 a.m.-9:23 a.m.
1 stop3h 58m
OntarioSeattle
ONT - SEA
ONTSEA
Ontario
Wed 6/8
10:00 a.m.-3:10 p.m.
1 stop5h 10m
Seattle/Tacoma Intl
Thu 14/8
5:00 a.m.-12:40 p.m.
2 stops7h 40m
OntarioSeattle
ONT - SEA
ONTSEA
Ontario
Wed 30/7
6:58 p.m.-9:37 p.m.
Nonstop2h 39m
Seattle/Tacoma Intl
Sun 3/8
9:30 p.m.-12:15 a.m.
Nonstop2h 45m
OntarioSeattle
ONT - SEA
ONTSEA
Ontario
Mon 4/8
6:39 p.m.-12:59 a.m.
1 stop6h 20m
Seattle/Tacoma Intl
Wed 6/8
5:10 a.m.-12:14 p.m.
1 stop7h 04m
OntarioVancouver
ONT - YVR
ONTYVR
Ontario
Mon 28/7
9:41 p.m.-12:40 p.m.
1 stop14h 59m
Vancouver Intl
Mon 11/8
8:15 a.m.-11:40 p.m.
2 stops15h 25m
OntarioBaton Rouge
ONT - BTR
ONTBTR
Ontario
Fri 15/8
11:45 a.m.-10:13 p.m.
1 stop8h 28m
Baton Rouge Ryan
Mon 18/8
4:38 p.m.-10:20 p.m.
1 stop7h 42m
OntarioCalgary
ONT - YYC
ONTYYC
Ontario
Wed 13/8
12:59 a.m.-2:46 p.m.
1 stop12h 47m
Calgary
Thu 21/8
9:55 a.m.-11:40 p.m.
1 stop14h 45m
OntarioToronto
ONT - YYZ
ONTYYZ
Ontario
Wed 17/9
8:00 a.m.-7:58 p.m.
1 stop8h 58m
Toronto Pearson Intl
Tue 23/9
11:00 a.m.-9:56 p.m.
2 stops13h 56m
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.
When is the best time to book a flight from Ontario?
Use this chart to determine the optimal time to book a round-trip flight from Ontario to Vancouver Intl. Price data was last updated on 27 June 2025.
The price you pay for your flight from Ontario may vary depending on when you book. For the best chance of a lower fare, look to book 8 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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 C$ 93). Flying from Ontario in December will prove the most costly (average of C$ 154). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.
Which airlines fly from Ontario?
For flights departing from Ontario check dates and pricing for the following: Air Canada. This airline departs to the following popular destinations: Vancouver.
What are popular destinations to fly to from Ontario?
From Ontario you can expect to find greater availability for the following destinations: 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 Denver Intl, with prices starting at C$ 181. 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 629,999 searches.
Get a feel of what it's like to fly with Alaska Airlines,Delta, andUnited Airlines from Ontario by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
Crew
Overall
Entertainment
Comfort
Food
Reviews
James,Apr 2025
LAX - SFO
Boarding
Crew
Overall
Entertainment
Comfort
Food
Reviews
James,Apr 2025
LAX - SFO
Boarding
Crew
Overall
Entertainment
Comfort
Food
Reviews
James,Apr 2025
LAX - SFO
Boarding
Crew
Overall
Entertainment
Comfort
Food
Reviews
James,Apr 2025
LAX - SFO
Boarding
Crew
Overall
Entertainment
Comfort
Food
Reviews
James,Apr 2025
LAX - SFO
Boarding
Crew
Overall
Entertainment
Comfort
Food
Reviews
James,Apr 2025
LAX - SFO
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Airports servicing Ontario
Fly out of one of these airports located in Ontario.
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.
Fly with Cheapflights
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How does Cheapflights help users find flights from Ontario?
Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Ontario. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.
Why should you use Cheapflights to find cheap flight tickets from Ontario?
Cheapflights helps you find that perfect flight from Ontario by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!
Can Cheapflights find flights from Ontario with no change fees?
Cheapflights does show flights with no change fees to all users. To see these options for flights from Ontario, users can toggle the no change fees filter when performing a flight search.
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!