$125+ Cheap flights from San Francisco (SFO) to 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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from San Francisco to Ontario with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from San Francisco to Ontario
Keep the following information in mind while searching for San Francisco to Ontario flight deals. Data was last updated April 29, 2025.
Most accurate provider | Mytrip 3 stars |
|---|---|
Most trusted provider | Mytrip 3 stars |
Round-trip from | $246 (Mytrip) |
One-way from | $125 (Mytrip) |
Popular in | December |
Cheapest in | February |
Average price | $393 |
Good round-trip deal | $368 or less |
Good one-way deal | $175 or less |
Find flight deals from San Francisco to Ontario
Cheapest flights from San Francisco to OntarioExplore the most affordable flight options available from San Francisco to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.
Explore the most affordable flight options available from San Francisco to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.
This Mytrip deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Justfly.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Trip.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Trip.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Trip.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 29, 2025.
Use the filters below to find and compare flights from San Francisco to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
San FranciscoToronto
SFO - YYZ
SFOYYZ
San Francisco
Wed 6/4
10:15 am-1:39 pm
1 stop24h 24m
Toronto Pearson Intl
Sun 6/8
6:30 am-9:30 am
1 stop30h 00m
San FranciscoToronto
SFO - YYZ
SFOYYZ
San Francisco
Tue 5/27
10:15 am-6:40 am
1 stop17h 25m
Toronto Pearson Intl
Tue 6/3
9:15 pm-9:30 am
1 stop15h 15m
San FranciscoToronto
SFO - YKF
SFOYKF
San Francisco
Thu 7/10
7:30 am-6:56 pm
1 stop8h 26m
Toronto Region of Waterloo Intl
Tue 7/15
6:00 am-1:59 pm
2 stops10h 59m
San FranciscoToronto
SFO - YKF
SFOYKF
San Francisco
Wed 6/4
10:15 am-7:25 pm
1 stop30h 10m
Toronto Region of Waterloo Intl
Sun 6/8
8:25 pm-9:30 am
1 stop16h 05m
San FranciscoHamilton
SFO - YHM
SFOYHM
San Francisco
Tue 5/27
10:15 am-12:41 am
2 stops11h 26m
Hamilton
Tue 6/3
8:20 am-9:30 am
1 stop28h 10m
San FranciscoToronto
SFO - YYZ
SFOYYZ
San Francisco
Mon 6/30
2:45 pm-6:12 am
2 stops12h 27m
Toronto Pearson Intl
Fri 7/11
9:00 am-2:48 pm
1 stop8h 48m
San FranciscoOttawa
SFO - YOW
SFOYOW
San Francisco
Tue 5/27
2:45 pm-6:45 am
2 stops13h 00m
Ottawa
Tue 6/3
3:35 pm-9:25 pm
1 stop8h 50m
San FranciscoMontreal
SFO - YUL
SFOYUL
San Francisco
Tue 7/22
12:50 pm-12:43 am
1 stop8h 53m
Montreal Pierre Elliott Trudeau Intl
Tue 7/29
7:00 am-11:57 pm
2 stops19h 57m
San FranciscoOttawa
SFO - YOW
SFOYOW
San Francisco
Fri 6/13
5:45 am-7:55 pm
1 stop11h 10m
Ottawa
Mon 6/16
6:00 am-12:05 pm
1 stop9h 05m
San FranciscoToronto
SFO - YKF
SFOYKF
San Francisco
Tue 6/10
2:45 pm-5:30 am
3 stops35h 45m
Toronto Region of Waterloo Intl
Thu 6/12
9:25 am-9:30 am
1 stop27h 05m
Best time to book a flight from San Francisco to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from San Francisco with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from San Francisco to Ontario
What is the cheapest month to book a flight from San Francisco to Region of Ontario?
Currently, January is the cheapest month in which you can book a flight from San Francisco to Region of Ontario (average of $243). Flying from San Francisco to Region of Ontario in July is currently the most expensive (average of $359). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SFO to ON?
Find hourly flight availability from San Francisco to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 29, 2025.
When flying from San Francisco to Region of Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Weekly flight availability from San Francisco to Region of Ontario
Explore weekly flight availability from San Francisco to Ontario. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 29, 2025.
The most flights from SFO to CAON are scheduled on a Tuesday (24 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (2 on average).
Rainfall in Ontario by month
Plan your trip to Ontario by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Region of Ontario ranges from 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Region of Ontario when rainfall is around 2.0 in.
Temperature in Ontario by month
Plan your trip to Ontario by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Region of Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated April 29, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Porter Airlines and Delta from San Francisco to Ontario to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
Food
Crew
Overall
Entertainment
Boarding
Reviews
James,Apr 2025
LAX - SFO
Comfort
Food
Crew
Overall
Entertainment
Boarding
Reviews
James,Apr 2025
LAX - SFO
Comfort
Food
Crew
Overall
Entertainment
Boarding
Reviews
James,Apr 2025
LAX - SFO
Comfort
Food
Crew
Overall
Entertainment
Boarding
Reviews
James,Apr 2025
LAX - SFO
Comfort
Food
Crew
Overall
Entertainment
Boarding
Reviews
James,Apr 2025
LAX - SFO
Comfort
Food
Crew
Overall
Entertainment
Boarding
Reviews
James,Apr 2025
LAX - SFO
Related info for your journey
Find useful and relevant information for your journey from San Francisco to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for San Francisco to Ontario
See prices for flight routes from nearby airports that may be better suited for you.
Top 7 airlines flying from San Francisco to Ontario
Discover the top 7 airlines that operate flights from San Francisco to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 29, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$136 | Average$662 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$164 | Average$456 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$186 | Average$533 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$187 | Average$520 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$194 | Average$410 | FlexibilityNo cancel fee | On-time50% | |
| Cheapest$205 | Average$556 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$216 | Average$424 | FlexibilityNo cancel fee | On-time60% |