Flights from San Francisco International Airport to Ontario

Flight deals from San Francisco International Airport to Ontario

Looking for cheap tickets from San Francisco International Airport to Ontario, or a last-minute trip? Find the lowest prices on one-way and return tickets right here.

Toronto.£152 per passenger.Departing Tue, 16 Sep, returning Mon, 29 Sep.Return flight with Flair Airlines.Outbound indirect flight with Flair Airlines, departs from San Francisco International on Tue, 16 Sep, arriving in Toronto Pearson International.Inbound indirect flight with Flair Airlines, departs from Toronto Pearson International on Mon, 29 Sep, arriving in San Francisco International.Price includes taxes and charges.From £152, select.

Ottawa.£222 per passenger.Departing Thu, 4 Sep, returning Wed, 10 Sep.Return flight with Flair Airlines and Air Canada.Outbound indirect flight with Flair Airlines, departs from San Francisco International on Thu, 4 Sep, arriving in Ottawa International.Inbound indirect flight with Air Canada, departs from Ottawa International on Wed, 10 Sep, arriving in San Francisco International.Price includes taxes and charges.From £222, select.

London.£246 per passenger.Departing Tue, 9 Sep, returning Tue, 16 Sep.Return flight with WestJet.Outbound indirect flight with WestJet, departs from San Francisco International on Tue, 9 Sep, arriving in London.Inbound indirect flight with WestJet, departs from London on Tue, 16 Sep, arriving in San Francisco International.Price includes taxes and charges.From £246, select.

Windsor.£405 per passenger.Departing Thu, 9 Oct, returning Sun, 12 Oct.Return flight with Flair Airlines and Porter Airlines.Outbound indirect flight with Flair Airlines, departs from San Francisco International on Thu, 9 Oct, arriving in Windsor.Inbound indirect flight with Porter Airlines, departs from Windsor on Sun, 12 Oct, arriving in San Francisco International.Price includes taxes and charges.From £405, select.

Sault Ste Marie.£486 per passenger.Departing Sun, 17 Aug, returning Tue, 19 Aug.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from San Francisco International on Sun, 17 Aug, arriving in Sault Ste Marie.Inbound indirect flight with Air Canada, departs from Sault Ste Marie on Tue, 19 Aug, arriving in San Francisco International.Price includes taxes and charges.From £486, select.

Sudbury.£518 per passenger.Departing Fri, 10 Oct, returning Mon, 3 Nov.Return flight with Porter Airlines.Outbound indirect flight with Porter Airlines, departs from San Francisco International on Fri, 10 Oct, arriving in Sudbury.Inbound indirect flight with Porter Airlines, departs from Sudbury on Mon, 3 Nov, arriving in San Francisco International.Price includes taxes and charges.From £518, select.

Flying from San Francisco International Airport to Ontario

Arm yourself with these facts on the fly.

Cheapest flight found	£152, Toronto
Cheapest month to fly	September
Average flight time	4 hrs, 58 mins
Average flights per week	174
Most popular airline	United

How to find cheap flights from San Francisco International Airport to Ontario

We've compared the best online travel agents and flight providers on the internet to find the cheapest plane tickets from San Francisco International Airport to Ontario. Other savvy travellers recently found return flights from £152 and one-way tickets from £60. Ready to join them? Here are a few tips to help you do it the smart way.

Fly in October

The cheapest time to fly from San Francisco International Airport to Ontario is currently October.

Fly on a Tuesday

From our data, we can see that Tuesday seems to be the cheapest time to fly from San Francisco International Airport to Ontario.

Flex your dates for the best rates

If you’re flexible on your departure dates, you can use Skyscanner's whole month tool to find the cheapest day of the year to fly from San Francisco International Airport to anywhere you choose in Ontario.

Watch as fares rise and fall

With Price Alerts, we'll let you know when flight prices from San Francisco International Airport to your chosen airport in Ontario go up or down so you can book when the time is just right.

Relax – these are fee-free flight tickets

With us, there are no added fees – the San Francisco International Airport to Ontario flight price you see when you search with us is what you pay to the provider.

Frequently asked questions

Are there any direct flights from San Francisco International Airport to Ontario?

Yes - direct flights currently operate from San Francisco International Airport to Toronto Pearson International Airport in Ontario.

What is the average price of a flight from San Francisco International Airport to Ontario?

We looked at all of the upcoming return flights from San Francisco International Airport to Ontario we could find over the next 12 months. It looks like £152 is the best price. This is good, compared to the average Ontario ticket price of £338.

What is the cheapest month to fly from San Francisco International Airport to Ontario?

The cheapest month to fly from San Francisco International Airport to London Airport is currently September.
The cheapest month to fly from San Francisco International Airport to Windsor Airport is currently October.
The cheapest month to fly from San Francisco International Airport to Sault Ste Marie Airport is currently August.
And the cheapest month to fly from San Francisco International Airport to Toronto Pearson International Airport is usually September.

Which upcoming date is cheapest to fly from San Francisco International Airport to Ontario on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from San Francisco International Airport to Ontario on Tuesday, 16 September 2025.

If I'm flying from San Francisco International Airport, where in Ontario is cheapest to fly into?

If you're flying from San Francisco International, the cheapest city in Ontario to fly into is Toronto. The cheapest airport serving Toronto at the moment is Toronto Pearson International.