Flights from San Diego to Ontario

Flight deals from San Diego to Ontario

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

Toronto.£177 per passenger.Departing Tue, 14 Apr, returning Tue, 21 Apr.Return flight with Frontier Airlines and WestJet.Outbound indirect flight with Frontier Airlines, departs from San Diego International on Tue, 14 Apr, arriving in Toronto Pearson International.Inbound indirect flight with WestJet, departs from Toronto Pearson International on Tue, 21 Apr, arriving in San Diego International.Price includes taxes and charges.From £177, select.

Ottawa.£252 per passenger.Departing Mon, 23 Mar, returning Mon, 30 Mar.Return flight with Frontier Airlines and Porter Airlines.Outbound indirect flight with Frontier Airlines, departs from San Diego International on Mon, 23 Mar, arriving in Ottawa International.Inbound indirect flight with Porter Airlines, departs from Ottawa International on Mon, 30 Mar, arriving in San Diego International.Price includes taxes and charges.From £252, select.

London.£461 per passenger.Departing Tue, 31 Mar, returning Tue, 7 Apr.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from San Diego International on Tue, 31 Mar, arriving in London.Inbound indirect flight with Air Canada, departs from London on Tue, 7 Apr, arriving in San Diego International.Price includes taxes and charges.From £461, select.

Sault Ste Marie.£498 per passenger.Departing Sun, 5 Apr, returning Sun, 12 Apr.Return flight with Frontier Airlines and Porter Airlines.Outbound indirect flight with Frontier Airlines, departs from San Diego International on Sun, 5 Apr, arriving in Sault Ste Marie.Inbound indirect flight with Porter Airlines, departs from Sault Ste Marie on Sun, 12 Apr, arriving in San Diego International.Price includes taxes and charges.From £498, select.

Sudbury.£506 per passenger.Departing Wed, 1 Apr, returning Wed, 8 Apr.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from San Diego International on Wed, 1 Apr, arriving in Sudbury.Inbound indirect flight with Air Canada, departs from Sudbury on Wed, 8 Apr, arriving in San Diego International.Price includes taxes and charges.From £506, select.

Windsor.£524 per passenger.Departing Sat, 30 May, returning Sun, 14 Jun.Return flight with Alaska Airlines and Porter Airlines.Outbound indirect flight with Alaska Airlines, departs from San Diego International on Sat, 30 May, arriving in Windsor.Inbound indirect flight with Porter Airlines, departs from Windsor on Sun, 14 Jun, arriving in San Diego International.Price includes taxes and charges.From £524, select.

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Flying from San Diego to Ontario

Arm yourself with these facts on the fly.

Cheapest flight found	£177
Cheapest month to fly	April
Average flight time	4 hrs, 55 mins
Cheapest airport to fly from	San Diego International
Most popular airline	Air Canada

How to find cheap flights from San Diego to Ontario

We've compared the best online travel agents and flight providers on the internet to find the cheapest plane tickets from San Diego to Ontario. Other savvy travellers recently found return flights from £177 and one-way tickets from £74 one-way. Ready to join them? Here are a few tips to help you do it the smart way.

Fly from San Diego International into Toronto Pearson International

At the moment, the lowest priced flight tickets to Ontario are from San Diego International Airport to Toronto Pearson International Airport.

Fly in April

We crunched the flight calendar and found the cheapest time to fly from San Diego to Ontario is currently April.

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 Diego 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 Diego to 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 Ontario to Ontario flight price you see when you search with us is what you pay to the provider.

Frequently asked questions

What's the average San Diego to Ontario flight price?

We looked at all of the upcoming return flights from San Diego to Ontario we could find over the next 12 months. It looks like £177 is the best price. This is good, compared to the average Ontario ticket price of £403.

What is the cheapest month to fly from San Diego to Ontario?

The cheapest month to fly from San Diego to Sudbury Airport is usually April. The cheapest month to fly from San Diego to Sault Ste Marie Airport is usually April. The cheapest month to fly from San Diego to Ottawa International Airport is usually March. And the cheapest month to fly from San Diego to Toronto Pearson International Airport is usually April.

Which upcoming date is cheapest to fly from San Diego to Ontario on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from San Diego to Ontario on Tuesday, 14 April 2026.

Are there any direct flights from San Diego to Ontario?

San Diego International Airport offers direct flights to Ontario.

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

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

How long is the flight from San Diego to Ontario?

The average flight time between San Diego and Ontario is 4 hours and 55 minutes.