What is the cheapest airline that flies from San Francisco to Ontario?

WestJet and Air Canada are the most popular carriers operating from San Francisco to Ontario

Which airlines fly to Region of Ontario?

Porter Airlines, Air Canada and United Airlines are the top three most popular airlines that fly to Region of Ontario from San Francisco according to our data. Porter Airlines is the first choice among our users, with 51% of people opting to fly with this airline when travelling to Region of Ontario. Keep in mind that there are 6 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 week?

The number of flights available between San Francisco and Region of Ontario is 199 per week as of May 2026. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.

How many flights depart from San Francisco to Region of Ontario on average per day?

As of May 2026, 28 flights take off from San Francisco and land in Region of Ontario each day. The most common flight departure time for this route is 8:00a.m., with 59% of daily flights taking off at noon.

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 May 2026, there are 5 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?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Francisco Airport to Ontario.

What documentation or ID do you need to fly to Ontario?

The travel and health documents required for your trip to Ontario can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

C$ 192 Cheap Flights from San Francisco to Ontario in 2026

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Find the cheapest flights from San Francisco to Ontario

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 a.m. - 4:45 p.m.

SFO

YXU

7h 45m

1 stop

6:10 a.m. - 12:00 p.m.

YXU

SFO

8h 50m

1 stop

C$ 397WestJet

Mon, 12 Oct - Tue, 20 Oct

6:00 a.m. - 4:45 p.m.

SFO

YXU

7h 45m

1 stop

6:10 a.m. - 12:00 p.m.

YXU

SFO

8h 50m

1 stop

C$ 398WestJet

Mon, 12 Oct - Wed, 21 Oct

6:00 a.m. - 7:55 p.m.

SFO

YYZ

10h 55m

2 stops

10:50 a.m. - 4:40 p.m.

YYZ

SFO

8h 50m

1 stop

C$ 405WestJet

Mon, 17 Aug - Fri, 21 Aug

6:00 a.m. - 7:55 p.m.

SFO

YYZ

10h 55m

2 stops

2:50 p.m. - 9:55 p.m.

YYZ

SFO

10h 05m

1 stop

C$ 406WestJet

Thu, 23 Jul - Thu, 6 Aug

6:05 p.m. - 7:05 a.m.

SFO

YUL

10h 00m

1 stop

7:15 a.m. - 9:00 p.m.

YUL

SFO

16h 45m

2 stops

C$ 525Multiple Airlines

Fri, 28 Aug - Wed, 2 Sep

6:00 a.m. - 5:15 p.m.

SFO

YHM

8h 15m

1 stop

6:15 a.m. - 9:55 p.m.

YHM

SFO

18h 40m

3 stops

C$ 610Multiple Airlines

Tue, 22 Sep - Thu, 24 Sep

8:30 a.m. - 7:07 p.m.

SFO

YQG

7h 37m

1 stop

4:05 p.m. - 8:59 p.m.

YQG

SFO

7h 54m

1 stop

C$ 644Air Canada

Mon, 21 Sep - Wed, 23 Sep

4:35 p.m. - 9:22 a.m.

SFO

YQG

13h 47m

2 stops

4:05 p.m. - 8:59 p.m.

YQG

SFO

7h 54m

1 stop

C$ 651Air Canada

Mon, 21 Sep - Wed, 23 Sep

11:30 p.m. - 10:06 a.m.

SFO

YTZ

7h 36m

1 stop

12:15 p.m. - 5:19 p.m.

YTZ

SFO

8h 04m

1 stop

C$ 719United Airlines

Mon, 1 Jun - Thu, 4 Jun

8:55 p.m. - 10:06 a.m.

SFO

YTZ

10h 11m

2 stops

12:15 p.m. - 6:18 p.m.

YTZ

SFO

9h 03m

1 stop

C$ 732United Airlines

Fri, 5 Jun - Sat, 13 Jun

WestJet flights from San Francisco to Region of Ontario

Our best WestJet deals on San Francisco to Region of Ontario flight tickets

WestJet

12 Oct

SFO6:00 a.m.San Francisco

7h 45m

1 stop

YXU4:45 p.m.London

20 Oct

YXU6:10 a.m.London

8h 50m

1 stop

SFO12:00 p.m.San Francisco

C$ 397

WestJet

12 Oct

SFO6:00 a.m.San Francisco

7h 45m

1 stop

YXU4:45 p.m.London

21 Oct

YXU6:10 a.m.London

8h 50m

1 stop

SFO12:00 p.m.San Francisco

C$ 398

WestJet

17 Aug

SFO6:00 a.m.San Francisco

10h 55m

2 stops

YYZ7:55 p.m.Toronto Pearson Intl

21 Aug

YYZ10:50 a.m.Toronto Pearson Intl

8h 50m

1 stop

SFO4:40 p.m.San Francisco

C$ 405

Delta flights from San Francisco to Region of Ontario

Our best Delta deals on San Francisco to Region of Ontario flight tickets

Delta

22 May

SFO11:59 p.m.San Francisco

10h 31m

1 stop

YYZ1:30 p.m.Toronto Pearson Intl

26 May

YYZ5:45 p.m.Toronto Pearson Intl

9h 42m

1 stop

SFO12:27 a.m.San Francisco

C$ 620

Delta

21 May

SFO6:00 a.m.San Francisco

12h 55m

1 stop

YYZ9:55 p.m.Toronto Pearson Intl

27 May

YYZ12:09 p.m.Toronto Pearson Intl

8h 40m

1 stop

SFO5:49 p.m.San Francisco

C$ 649

Delta

28 Jun

SFO6:05 p.m.San Francisco

8h 15m

1 stop

YXU5:20 a.m.London

5 Aug

YXU6:10 a.m.London

8h 50m

1 stop

SFO12:00 p.m.San Francisco

C$ 653

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 12/10

6:00 a.m.-4:45 p.m.

1 stop7h 45m

London

Tue 20/10

6:10 a.m.-12:00 p.m.

1 stop8h 50m

C$ 397

San FranciscoLondon

SFO - YXU

SFOYXU

San Francisco

Mon 12/10

6:00 a.m.-4:45 p.m.

1 stop7h 45m

London

Wed 21/10

6:10 a.m.-12:00 p.m.

1 stop8h 50m

C$ 398

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Mon 17/8

6:00 a.m.-7:55 p.m.

2 stops10h 55m

Toronto Pearson Intl

Fri 21/8

10:50 a.m.-4:40 p.m.

1 stop8h 50m

C$ 405

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Thu 23/7

6:00 a.m.-7:55 p.m.

2 stops10h 55m

Toronto Pearson Intl

Thu 6/8

2:50 p.m.-9:55 p.m.

1 stop10h 05m

C$ 406

San FranciscoMontreal

SFO - YUL

SFOYUL

San Francisco

Fri 28/8

6:05 p.m.-7:05 a.m.

1 stop10h 00m

Montreal Pierre Elliott Trudeau Intl

Wed 2/9

7:15 a.m.-9:00 p.m.

2 stops16h 45m

C$ 525

San FranciscoHamilton

SFO - YHM

SFOYHM

San Francisco

Tue 22/9

6:00 a.m.-5:15 p.m.

1 stop8h 15m

Hamilton

Thu 24/9

6:15 a.m.-9:55 p.m.

3 stops18h 40m

C$ 610

Quickest round-trip

San FranciscoWindsor

SFO - YQG

SFOYQG

San Francisco

Mon 21/9

8:30 a.m.-7:07 p.m.

1 stop7h 37m

Windsor

Wed 23/9

4:05 p.m.-8:59 p.m.

1 stop7h 54m

C$ 644

San FranciscoWindsor

SFO - YQG

SFOYQG

San Francisco

Mon 21/9

4:35 p.m.-9:22 a.m.

2 stops13h 47m

Windsor

Wed 23/9

4:05 p.m.-8:59 p.m.

1 stop7h 54m

C$ 650

San FranciscoToronto

SFO - YTZ

SFOYTZ

San Francisco

Mon 1/6

11:30 p.m.-10:06 a.m.

1 stop7h 36m

Toronto Island

Thu 4/6

12:15 p.m.-5:19 p.m.

1 stop8h 04m

C$ 719

San FranciscoToronto

SFO - YTZ

SFOYTZ

San Francisco

Fri 5/6

8:55 p.m.-10:06 a.m.

2 stops10h 11m

Toronto Island

Sat 13/6

12:15 p.m.-6:18 p.m.

1 stop9h 03m

C$ 732

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

What is the cheapest month to fly to Region of Ontario?

In general, February is the cheapest month to fly from San Francisco to Region of Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 149. If you are unable to visit Region of Ontario during the month of February, then departing from San Francisco during the month January is also very affordable. Most momondo users find prices during this month for around C$ 183.

What is the cheapest day to depart on your flight to Region of Ontario?

The cheapest day to depart from San Francisco to Region of Ontario is on a Thursday. Travellers who choose to depart for Region of Ontario on a Thursday will often find tickets for as low as C$ 480. The most expensive day to fly to Region of Ontario is Monday, with ticket prices averaging around C$ 646.

What is the cheapest time of day to depart on your flight to Region of Ontario?

Our most recent data shows that the best time of day to fly to Region of Ontario is in the morning. Flights from San Francisco to Region of Ontario during this time can be as low as C$ 558. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are C$ 635 on average. Flights to Region of Ontario from San Francisco in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 from San Francisco to Ontario?

You are more likely to see cheaper flights to Region of Ontario from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around C$ 634 when searching 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 C$ 556 on momondo.

Can stopping save me money on San Francisco to Region of Ontario flights?

You could potentially save up to 3% on your flight if you consider stops on a San Francisco to Region of Ontario flight.

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	C$ 309
Fastest flight time	4h 55m
Direct flights	Every day
Airports in Region of Ontario	125 airports

The best one-way flight to Region of Ontario from San Francisco in the past 72 hours is C$ 309. The best round-trip flight deal from San Francisco to Region of Ontario found on momondo in the last 72 hours is C$ 635.

The fastest flight from San Francisco to Region of Ontario takes 4h 55m

Direct flights go from San Francisco to Region of Ontario every day.

There are 125 airports in Region of Ontario. From San Francisco there are direct flights to Toronto Pearson Intl (YYZ).

Search flight deals

Frequently asked questions about flying from San Francisco to Ontario

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 May 2026, there are 5 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?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Francisco Airport to Ontario.
What documentation or ID do you need to fly to Ontario?
The travel and health documents required for your trip to Ontario can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from San Francisco to Region of Ontario?
Based on momondo bookings for flights between San Francisco and Region of Ontario, the leading plane model is Embraer 195 E2, making up 36.92% of the total bookings. Other popular models include Boeing 737 MAX 8 with 16.83%, Airbus A220-300 with 13.20%, and Boeing 737-800 with 9.31%.

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
Porter Airlines	PriceFrom C$ 194	Free Cancellation	Rating 8.0 437 reviews	Search Porter Airlines flights
WestJet	PriceFrom C$ 219	Free Cancellation	Rating 7.2 3,332 reviews	Search WestJet flights
Air Canada	PriceFrom C$ 261	Free Cancellation	Rating 7.1 11,002 reviews	Search Air Canada flights
Air Transat	PriceFrom C$ 486	Free Cancellation	Rating 7.8 548 reviews	Search Air Transat flights
United Airlines	PriceFrom C$ 526	Free Cancellation	Rating 7.4 9,694 reviews	Search United Airlines flights

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?

All flight searches from San Francisco to Ontario on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from San Francisco to Ontario?

momondo provides multiple filters to help you find the best flight to Ontario from San Francisco. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from San Francisco to Ontario right now. Can momondo alert me if prices change?

Price alerts on flights to Ontario from San Francisco are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Region of Ontario trip

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Popular Cities in Ontario

Flights to Torontofrom C$ 185

Flights to Vancouverfrom C$ 105

Flights to Montrealfrom C$ 232

Flights to Calgaryfrom C$ 160

Flights to Ottawafrom C$ 224

Flights to Winnipegfrom C$ 194

Flights to Halifaxfrom C$ 190

Flights to Kelownafrom C$ 162

Flights to Saskatoonfrom C$ 194

Flights to Reginafrom C$ 170

Flights to St. John'sfrom C$ 270

Flights to Québec Cityfrom C$ 259

Cheap flights from San Francisco to Ontario from C$ 192

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 12/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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WestJet flights from San Francisco to Region of Ontario

Our best WestJet deals on San Francisco to Region of Ontario flight tickets

Delta flights from San Francisco to Region of Ontario

Our best Delta deals on San Francisco to Region of Ontario flight tickets

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See travel insights to Ontario from

How to get the cheapest flight ticket from San Francisco to Region of Ontario

What is the cheapest month to fly to Region of Ontario?

What is the cheapest day to depart on your flight to Region of Ontario?

What is the cheapest time of day to depart on your flight to Region of Ontario?

What is the cheapest San Francisco to Ontario flight route?

How far in advance should I book a flight from San Francisco to Ontario?

Can stopping save me money on San Francisco to Region of Ontario flights?

What is the cheapest airline that flies from San Francisco to Ontario?

Which airlines fly to Region of Ontario?

How many flights depart from San Francisco to Region of Ontario on average per day?

How many flights depart from San Francisco to Region of Ontario on average per week?

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

Fastest flight time

Direct flights

Airports in Region of Ontario

Frequently asked questions about flying from San Francisco to Ontario

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

Why use momondo?

An easier way to manage your Region of Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Ontario

Popular Cities in Ontario

Popular flights according to clicks in the last 7 days on momondo

San Francisco flight routes

According to popular flight searches on momondo this year

Region of Ontario flight routes

According to popular flight searches on momondo this year

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