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C$ 54+ Cheap flights from Ontario

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/11. 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 — YVR
15 oct. — 22 oct.1
1 adult
1 adult, Economy

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 15 septiembre 2025.

Cheapest one-way flight

C$ 33

Cheapest round-trip flight

C$ 80

Cheapest airline

Frontier

Most popular destination

Vancouver Intl (YVR)

Good round-trip deal

C$ 81 or less

Good one-way deal

C$ 161 or less
The cheapest one-way flight from Ontario is currently to Las Vegas Harry Reid Intl.
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The cheapest round-trip flight from Ontario is currently to Vancouver Intl.
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On average, Frontier currently has the cheapest one-way flight from Ontario (avg. price of C$ 103).
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Vancouver Intl (YVR) is currently the most popular flight destination from Ontario (average round-trip price of C$ 236).
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Price to beat on a round-trip flight from Ontario.
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Price to beat on a one-way flight from Ontario.
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Find flights from Ontario

Cheapest flights from Ontario
Explore the most affordable flight options available from Ontario. Find the lowest fares based on data from user searches, with prices last updated on 15 septiembre 2025.

mar. 18/116:00 a.m.ONT - SFO
Nonstop1h 24mUnited Airlines
mar. 18/1111:15 a.m.SFO - ONT
Nonstop1h 22mUnited Airlines
Deal found 15/9C$ 99
mié. 8/101:53 p.m.ONT - SFO
Nonstop1h 18mUnited Airlines
sáb. 11/109:30 p.m.SFO - ONT
Nonstop1h 22mUnited Airlines
Deal found 14/9C$ 106
sáb. 6/126:41 p.m.ONT - SFO
Nonstop1h 24mUnited Airlines
mié. 10/129:28 p.m.SFO - ONT
Nonstop1h 21mUnited Airlines
Deal found 14/9C$ 134
sáb. 8/116:00 a.m.ONT - SFO
Nonstop1h 24mUnited Airlines
mar. 11/119:30 p.m.SFO - ONT
Nonstop1h 21mUnited Airlines
Deal found 14/9C$ 137
sáb. 1/116:53 a.m.ONT - SFO
1 stop15h 34mFrontier
dom. 2/1110:11 p.m.SFO - ONT
Nonstop1h 29mFrontier
Deal found 15/9C$ 144
vie. 21/116:00 a.m.ONT - SFO
Nonstop1h 24mUnited Airlines
mar. 25/119:30 p.m.SFO - ONT
Nonstop1h 21mUnited Airlines
Deal found 15/9C$ 159
vie. 26/91:53 p.m.ONT - SFO
Nonstop1h 18mUnited Airlines
mar. 28/109:30 p.m.SFO - ONT
Nonstop1h 21mUnited Airlines
Deal found 15/9C$ 162
mié. 8/103:50 p.m.ONT - SFO
1 stop6h 00mSouthwest
mié. 15/1011:30 a.m.SFO - ONT
1 stop4h 05mSouthwest
Deal found 14/9C$ 164
jue. 27/111:40 p.m.ONT - SFO
Nonstop1h 24mUnited Airlines
vie. 2/14:20 p.m.SFO - ONT
Nonstop1h 23mUnited Airlines
Deal found 15/9C$ 166
mié. 29/106:38 p.m.ONT - SFO
Nonstop1h 24mUnited Airlines
dom. 2/119:30 p.m.SFO - ONT
Nonstop1h 21mUnited Airlines
Deal found 14/9C$ 180
vie. 14/1110:40 p.m.ONT - YVR
1 stop14h 00mMultiple Airlines
lun. 17/117:00 a.m.YVR - ONT
2 stops14h 58mMultiple Airlines
Deal found 14/9C$ 265
vie. 17/1010:47 p.m.ONT - YYC
1 stop12h 08mMultiple Airlines
lun. 20/107:35 p.m.YYC - ONT
1 stop26h 07mMultiple Airlines
Deal found 13/9C$ 312

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 15 septiembre 2025. In the last 7 days, Cheapflights users made a total of 629,999 searches

Fly to

Vancouver Intl

Route

Depart

Return

Price

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

dom. 14/12

6:00 a.m.-7:24 a.m.

Nonstop1h 24m

San Francisco

dom. 14/12

9:28 p.m.-10:49 p.m.

Nonstop1h 21m

C$ 137

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

mié. 12/11

6:00 a.m.-7:24 a.m.

Nonstop1h 24m

San Francisco

mié. 12/11

11:15 a.m.-12:37 p.m.

Nonstop1h 22m

C$ 182

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

sáb. 13/12

5:30 a.m.-9:25 a.m.

1 stop3h 55m

San Francisco

dom. 14/12

5:15 a.m.-9:55 a.m.

1 stop4h 40m

C$ 186

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

sáb. 1/11

6:00 a.m.-7:24 a.m.

Nonstop1h 24m

San Francisco

sáb. 8/11

9:30 p.m.-10:51 p.m.

Nonstop1h 21m

C$ 189

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

mié. 15/10

6:36 p.m.-7:55 p.m.

Nonstop1h 19m

San Francisco

lun. 20/10

9:30 p.m.-10:52 p.m.

Nonstop1h 22m

C$ 189

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

sáb. 1/11

6:38 p.m.-8:02 p.m.

Nonstop1h 24m

San Francisco

mar. 4/11

9:30 p.m.-10:51 p.m.

Nonstop1h 21m

C$ 189

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

mié. 15/10

9:36 a.m.-10:55 a.m.

Nonstop1h 19m

San Francisco

sáb. 18/10

9:30 p.m.-10:52 p.m.

Nonstop1h 22m

C$ 189

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

sáb. 1/11

6:38 p.m.-8:02 p.m.

Nonstop1h 24m

San Francisco

lun. 3/11

4:13 p.m.-5:34 p.m.

Nonstop1h 21m

C$ 189

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

jue. 16/10

6:36 p.m.-7:55 p.m.

Nonstop1h 19m

San Francisco

mié. 29/10

11:15 a.m.-12:37 p.m.

Nonstop1h 22m

C$ 189

OntarioSan Francisco

ONT - SFO

ONTSFO

Ontario

jue. 30/10

1:40 p.m.-3:04 p.m.

Nonstop1h 24m

San Francisco

sáb. 1/11

9:30 p.m.-10:51 p.m.

Nonstop1h 21m

C$ 189

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/9

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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.
Estimated round-trip 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.

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 12 September 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 31 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$ 94). Flying from Ontario in December will prove the most costly (average of C$ 155). 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: Alaska Airlines, Air Canada. These airlines depart to the following popular destinations: Vancouver.

Air Canada
Air Canada
From C$ 227
China Airlines
China Airlines
From C$ 766
Frontier
Frontier
From C$ 41
United Airlines
United Airlines
From C$ 322

What are popular destinations to fly to from Ontario?

From Ontario you can expect to find greater availability for the following destinations: Dallas (113 flights per day), Seattle (109 flights per day) and Atlanta (82 flights per day).

Seattle/Tacoma Intl
Seattle/Tacoma Intl
From C$ 108
Portland
Portland
From C$ 116
Taipei City Taiwan Taoyuan Intl
Taipei City Taiwan Taoyuan Intl
From C$ 766
Las Vegas Harry Reid Intl
Las Vegas Harry Reid Intl
From C$ 58

What is the cheapest place to fly to from Ontario?

The cheapest city to fly to from Ontario is Las Vegas Harry Reid Intl, with prices starting at C$ 80. Explore other affordable destinations below.

Las Vegas Harry Reid Intl
Las Vegas Harry Reid Intl
From C$ 58
Seattle/Tacoma Intl
Seattle/Tacoma Intl
From C$ 108
Portland
Portland
From C$ 116
Taipei City Taiwan Taoyuan Intl
Taipei City Taiwan Taoyuan Intl
From C$ 766

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 and Air Canada 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.
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Air Canada
7.1
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Entertainment

7.0

Crew

8.5

Comfort

7.8

Overall

8.0

Food

7.1

Boarding

8.1

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

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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 15 septiembre 2025.

  • What are the most popular destinations to fly to from Ontario?

    This month, the top selected destinations from Ontario are Denver, Dallas/Fort Worth Airport, Honolulu. Throughout the year, Dallas/Fort Worth Airport, Denver, Guadalajara are some of the top choices made by users flying from Ontario.

  • What is the cheapest flight from Ontario to anywhere?

    Users have flown out of Ontario for as low as C$ 80 to Las Vegas (prices may vary depending on the airline and departure time). On average, users have booked flights for C$ 406 to fly from Ontario.

  • What are the cheapest airlines flying from Ontario to anywhere?

    According to our data, users have found Frontier, Air Canada, and United Airlines to have the cheapest round-trip prices from Ontario. Some of the destinations and prices are as follows: Frontier flights from Ontario to Las Vegas Harry Reid Intl (C$ 57). Air Canada flights from Ontario to Vancouver Intl (C$ 314). United Airlines flights from Ontario to Toronto Pearson Intl (C$ 445).

  • What is the cheapest premium economy flight from Ontario?

    Options for some of the cheapest premium economy flights from Ontario we have found on Cheapflights are as follows:
    Fly from Ontario to Houston George Bush Intcntl Airport starting at C$ 1,207
    Fly from Ontario to Taipei City Taiwan Taoyuan Intl Airport starting at C$ 2,841

  • What is the cheapest first class flight from Ontario?

    If you’re looking to fly first-class from Ontario to anywhere, put Dallas on your list as prices start at C$ 2,122 for this destination.

  • What is the cheapest month to fly from Ontario?

    At the present moment the cheapest month to fly from Ontario is currently April; with December being the most expensive. Prices will vary depending on multiple factors such as booking in advance, airline and departure airports and times.

  • Where are the cheapest places to fly to from Ontario?

    Check out the cheapest flights from Ontario to embark to:
    Travel from Ontario to Vancouver from C$ 265 round trip

  • 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!

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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!

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