Cheap flights from San Francisco to Ontario from $80
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Ontario departing on 5/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from San Francisco to Ontario
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Cheap direct flights
Delta flights from San Francisco to Region of Ontario
Our best Delta deals on San Francisco to Region of Ontario flight tickets
Flair Airlines flights from San Francisco to Region of Ontario
Our best Flair Airlines deals on San Francisco to Region of Ontario flight tickets
See travel insights to Ontario from
How to get the cheapest flight ticket from San Francisco to Region of Ontario
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Region of Ontario?
The month of February is, on average, the cheapest month to fly to Region of Ontario from San Francisco, with most prices found around $355. If you aren’t able to travel during the month of February, then book flights to Region of Ontario from San Francisco during January instead. Flights to Region of Ontario in January, while not as cheap as those in February, still average around $407.
What is the cheapest day to depart on your flight to Region of Ontario?
According to our data, Wednesday is the cheapest day to fly to Region of Ontario from San Francisco. The lowest ticket price found for a Wednesday departure recently was $586. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from San Francisco to Region of Ontario on a Sunday will generally be more expensive and average around $734. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Region of Ontario?
According to our data, the cheapest time of day to fly to Region of Ontario is at noon. momondo users have found flights departing from San Francisco to Region of Ontario at noon for as low as $438. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the morning are often more expensive with an average ticket price of $853.
What is the cheapest San Francisco to Ontario flight route?
Fly from San Francisco to Toronto Pearson Intl for the best San Francisco - Ontario flight prices
How far in advance should I book a flight to Region of Ontario?
You are more likely to see cheaper flights to Region of Ontario from San Francisco when booking 22 weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around $464 when searching 22 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Region of Ontario from San Francisco for as low as $382 on momondo.
What cabin class options are available on San Francisco to Ontario flights?
There are 4 cabin classes available to choose from on San Francisco to Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from San Francisco to Ontario?
Flair Airlines, WestJet, and Porter Airlines are the most popular carriers operating from San Francisco to Ontario
What airlines fly to Region of Ontario?
Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to Region of Ontario from San Francisco according to our data. Air Canada is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Region of Ontario. Keep in mind that there are 7 different airlines that fly to Region of Ontario on a routine basis, so you have a few additional options to choose from.
How many flights depart from San Francisco to Region of Ontario on average per day?
The number of flights available between San Francisco and Region of Ontario is 19 per day as of April 2025. The most frequent departure time is 8:00AM, with 58% of daily flights leaving at noon.
How many flights depart from San Francisco to Region of Ontario on average per week?
The number of flights available between San Francisco and Region of Ontario is 136 per week as of April 2025. The most frequent departure day is Tue, with 21% of weekly flights leaving on this day.
Cheap San Francisco to Region of Ontario flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from San Francisco to Region of Ontario
Best Price Found | $80 |
|---|---|
Fastest flight time | 4h 54m |
Direct flights | Every day |
Airports in Region of Ontario | 5 airports |
When did momondo last update prices for flights from San Francisco Airport to Ontario?
Prices for flights from San Francisco Airport to Ontario are refreshed on a daily basis.
How many operators does momondo search for flights from San Francisco Airport to Ontario?
As of April 2025, there are 7 operators available to choose from for flights from San Francisco Airport to Ontario.
How old do you have to be to fly from San Francisco Airport to Ontario?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Francisco Airport to Ontario.
What documentation or ID do you need to fly to Ontario?
The required travel and health documents for your Ontario trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ontario. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from San Francisco to Region of Ontario?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from San Francisco to Region of Ontario is Embraer 195 E2 (30.15% of total bookings). The next most popular plane models are Boeing 737 MAX 8 (17.67%), Airbus A220-300 (15.70%), and Boeing 737-800 (12.18%).
Best airlines flying from San Francisco to Region of Ontario
Compare and see reviews for airlines that fly from San Francisco to Region of Ontario with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $136 | Free Cancellation | Rating 7.0 9,022 reviews | |||
| PriceFrom $166 | Free Cancellation | Rating 7.9 278 reviews | |||
| PriceFrom $186 | Free Cancellation | Rating 7.4 8,615 reviews | |||
| PriceFrom $187 | Free Cancellation | Rating 8.0 7,898 reviews | |||
| PriceFrom $194 | Free Cancellation | Rating 7.8 381 reviews | |||
| PriceFrom $205 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $216 | Free Cancellation | Rating 7.2 2,789 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from San Francisco to Ontario?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from San Francisco to Ontario. momondo saves you time and could save you money on your trip.
Can I find flights from San Francisco to Ontario with flexible booking policies on momondo?
Flights from San Francisco to Ontario with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from San Francisco to Ontario?
momondo helps you find the best flight between San Francisco and Ontario by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from San Francisco to Ontario right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Ontario, momondo offers a useful price alert feature which will track prices for flights to Ontario from San Francisco and alert you when they change.