Cheap flights from Ontario to San Francisco Bay Area from C$ 193
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 25/7. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from Ontario to San Francisco Bay Area
Keep the following information in mind while searching for Ontario to San Francisco Bay Area flight deals. Data was last updated 12 June 2025.
Find flight deals from Ontario to San Francisco Bay Area
Cheapest flights from Ontario to San Francisco Bay AreaExplore the most affordable flight options available from Ontario to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 June 2025.
Explore the most affordable flight options available from Ontario to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 June 2025.
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario to San Francisco Bay Area 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 629,999 searches. Data last updated 12 June 2025.
Use the filters below to find and compare flights from Ontario to San Francisco Bay Area that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
HamiltonSan Francisco
YHM - SFO
YHMSFO
Hamilton
Mon 11/8
6:00 a.m.-11:56 a.m.
1 stop8h 56m
San Francisco
Wed 13/8
12:50 p.m.-12:41 a.m.
1 stop8h 51m
OttawaSan Francisco
YOW - SFO
YOWSFO
Ottawa
Thu 24/7
7:15 p.m.-1:59 p.m.
2 stops21h 44m
San Francisco
Sun 3/8
6:05 p.m.-6:45 a.m.
1 stop9h 40m
TorontoSan Francisco
YYZ - SFO
YYZSFO
Toronto Pearson Intl
Wed 13/8
6:49 a.m.-2:27 p.m.
1 stop10h 38m
San Francisco
Sat 16/8
12:45 a.m.-12:30 p.m.
1 stop8h 45m
MontrealSan Francisco
YUL - SFO
YULSFO
Montreal Pierre Elliott Trudeau Intl
Mon 25/8
5:30 p.m.-11:56 a.m.
1 stop21h 26m
San Francisco
Tue 2/9
12:50 p.m.-12:41 a.m.
1 stop8h 51m
TorontoSan Francisco
YYZ - SFO
YYZSFO
Toronto Pearson Intl
Thu 24/7
10:25 p.m.-1:59 p.m.
2 stops18h 34m
San Francisco
Sun 3/8
7:30 a.m.-12:33 a.m.
2 stops14h 03m
TorontoSan Francisco
YKF - SFO
YKFSFO
Toronto Region of Waterloo Intl
Thu 24/7
7:45 p.m.-1:59 p.m.
2 stops21h 14m
San Francisco
Sun 3/8
7:30 a.m.-12:46 a.m.
1 stop14h 16m
TorontoSan Jose
YYZ - SJC
YYZSJC
Toronto Pearson Intl
Wed 8/10
10:00 a.m.-10:46 p.m.
2 stops15h 46m
San Jose
Wed 15/10
6:15 a.m.-6:12 a.m.
2 stops20h 57m
TorontoSan Francisco
YYZ - SFO
YYZSFO
Toronto Pearson Intl
Tue 8/7
8:05 p.m.-10:10 a.m.
1 stop17h 05m
San Francisco
Tue 15/7
7:30 a.m.-12:33 a.m.
2 stops14h 03m
MontrealSan Francisco
YUL - SFO
YULSFO
Montreal Pierre Elliott Trudeau Intl
Mon 18/8
6:45 a.m.-12:23 p.m.
1 stop8h 38m
San Francisco
Mon 25/8
1:25 p.m.-12:37 a.m.
1 stop8h 12m
TorontoSan Jose
YYZ - SJC
YYZSJC
Toronto Pearson Intl
Wed 25/6
6:30 a.m.-12:43 p.m.
1 stop9h 13m
San Jose
Mon 30/6
6:35 a.m.-9:59 p.m.
1 stop12h 24m
Best time to book a flight from Ontario to San Francisco Bay Area
Have a flexible travel schedule? Discover the best time to fly to San Francisco Bay Area from Ontario with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Ontario to San Francisco Bay Area
What is the cheapest month to book a flight from Region of Ontario to San Francisco Bay Area?
Currently, January is the cheapest month in which you can book a flight from Region of Ontario to San Francisco Bay Area (average of C$ 276). Flying from Region of Ontario to San Francisco Bay Area in December is currently the most expensive (average of C$ 368). 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 ON to XIH?
Find hourly flight availability from Ontario to San Francisco Bay Area. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 June 2025.
When flying from Region of Ontario to San Francisco Bay Area, 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 Region of Ontario to San Francisco Bay Area
Explore weekly flight availability from Ontario to San Francisco Bay Area. 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 12 June 2025.
The most flights from CAON to zzXIH are scheduled on a Wednesday (25 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (20 on average).
Rainfall in San Francisco Bay Area by month
Plan your trip to San Francisco Bay Area by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in San Francisco Bay Area ranges from 0.0 - 112.0 mm per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco Bay Area when rainfall is around 0.0 mm.
Temperature in San Francisco Bay Area by month
Plan your trip to San Francisco Bay Area by taking into account the average temperature totals by month.
If weather is an important factor for your trip to San Francisco Bay Area, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).
Reviews of airlines servicing San Francisco Bay Area
Get insights into the airlines that provide service to San Francisco Bay Area. 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 San Francisco Bay Area. Reviews last updated 12 June 2025.
See what other customers who have flown with Delta, Alaska Airlines and Porter Airlines from Ontario to San Francisco Bay Area have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
Overall
Comfort
Entertainment
Boarding
Crew
Reviews
Aaron,Oct 2024
TUS - LAX
Food
Overall
Comfort
Entertainment
Boarding
Crew
Reviews
Aaron,Oct 2024
TUS - LAX
Food
Overall
Comfort
Entertainment
Boarding
Crew
Reviews
Aaron,Oct 2024
TUS - LAX
Food
Overall
Comfort
Entertainment
Boarding
Crew
Reviews
Aaron,Oct 2024
TUS - LAX
Food
Overall
Comfort
Entertainment
Boarding
Crew
Reviews
Aaron,Oct 2024
TUS - LAX
Food
Overall
Comfort
Entertainment
Boarding
Crew
Reviews
Aaron,Oct 2024
TUS - LAX
Related info for your journey
Find useful and relevant information for your journey from Ontario to San Francisco Bay Area. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Ontario to San Francisco Bay Area
See prices for flight routes from nearby airports that may be better suited for you.
Top 8 airlines flying from Ontario to San Francisco Bay Area
Discover the top 8 airlines that operate flights from Ontario to San Francisco Bay Area. 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 629,999 searches. Data last updated 12 June 2025.
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Why should you use Cheapflights to find cheap flight tickets from Ontario to San Francisco Bay Area?
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Can Cheapflights find flights from Ontario to San Francisco Bay Area with no change fees?
Need flexible booking options for your flight to San Francisco Bay Area from Ontario? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.
Can Cheapflights notify me if prices for flights from Ontario to San Francisco Bay Area become cheaper?
Yes! Start tracking prices for Ontario to San Francisco Bay Area flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.