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Cheap flights from San Francisco to Ontario from $96

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 2/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from San Francisco to Ontario

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:32 pm - 6:43 am
SFO
-
YYZ
30h 11m1 stop
Multiple Airlines Logo
8:00 pm - 6:20 pm
YYZ
-
SFO
25h 20m1 stop
$219Multiple Airlines
Sun, Feb 1 - Mon, Feb 9
WestJet Logo
7:30 am - 9:00 pm
SFO
-
YYZ
10h 30m2 stops
WestJet Logo
1:30 pm - 9:24 pm
YYZ
-
SFO
10h 54m1 stop
$232WestJet
Thu, Apr 30 - Mon, May 4
Multiple Airlines Logo
8:18 pm - 7:47 pm
SFO
-
YYZ
20h 29m1 stop
Multiple Airlines Logo
8:00 pm - 6:20 pm
YYZ
-
SFO
25h 20m1 stop
$233Multiple Airlines
Thu, Feb 5 - Mon, Feb 9
Multiple Airlines Logo
9:32 pm - 7:36 pm
SFO
-
YYZ
19h 04m2 stops
Multiple Airlines Logo
8:00 pm - 8:47 am
YYZ
-
SFO
15h 47m1 stop
$235Multiple Airlines
Sun, Feb 1 - Mon, Feb 9
Multiple Airlines Logo
2:08 pm - 7:55 pm
SFO
-
YYZ
26h 47m1 stop
Multiple Airlines Logo
1:30 pm - 9:37 am
YYZ
-
SFO
23h 07m2 stops
$237Multiple Airlines
Tue, Jan 20 - Thu, Jan 22
Multiple Airlines Logo
10:15 am - 6:40 am
SFO
-
YYZ
17h 25m1 stop
Multiple Airlines Logo
12:30 pm - 9:37 am
YYZ
-
SFO
24h 07m2 stops
$239Multiple Airlines
Thu, Jan 22 - Thu, Jan 29
Air Canada Logo
8:25 am - 4:49 pm
SFO
-
YUL
5h 24mnonstop
Air Canada Logo
5:50 pm - 9:22 pm
YUL
-
SFO
6h 32mnonstop
$271Air Canada
Mon, Feb 23 - Tue, Mar 3
Air Canada Logo
8:25 am - 4:49 pm
SFO
-
YUL
5h 24mnonstop
Air Canada Logo
5:50 pm - 9:22 pm
YUL
-
SFO
6h 32mnonstop
$273Air Canada
Mon, Feb 23 - Tue, Mar 3
United Airlines Logo
12:00 pm - 11:05 pm
SFO
-
YQT
8h 05m1 stop
United Airlines Logo
5:00 am - 9:30 pm
YQT
-
SFO
19h 30m2 stops
$432United Airlines
Wed, Jan 21 - Sun, Jan 25
United Airlines Logo
5:00 am - 11:05 pm
SFO
-
YQT
15h 05m2 stops
United Airlines Logo
5:00 am - 9:30 pm
YQT
-
SFO
19h 30m2 stops
$441United Airlines
Wed, Jan 21 - Sun, Jan 25

Porter Airlines flights from San Francisco to Region of Ontario

Our best Porter Airlines deals on San Francisco to Region of Ontario flight tickets
Porter Airlines
May 21
SFO1:25 pmSan Francisco
5h 04m
YYZ9:29 pmToronto Pearson Intl
May 25
YYZ9:45 amToronto Pearson Intl
5h 38m
SFO12:23 pmSan Francisco
$279
Porter Airlines
Jan 22
SFO1:45 pmSan Francisco
7h 50m
1 stop
YUL12:35 amMontreal Pierre Elliott Trudeau Intl
Jan 25
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
8h 58m
1 stop
SFO12:43 pmSan Francisco
$281
Porter Airlines
Feb 28
SFO1:45 pmSan Francisco
4h 57m
YYZ9:42 pmToronto Pearson Intl
Mar 1
YYZ9:50 amToronto Pearson Intl
5h 55m
SFO12:45 pmSan Francisco
$283

WestJet flights from San Francisco to Region of Ontario

Our best WestJet deals on San Francisco to Region of Ontario flight tickets
WestJet
Apr 30
SFO7:30 amSan Francisco
10h 30m
2 stops
YYZ9:00 pmToronto Pearson Intl
May 4
YYZ1:30 pmToronto Pearson Intl
10h 54m
1 stop
SFO9:24 pmSan Francisco
$232
WestJet
May 15
SFO6:05 pmSan Francisco
9h 07m
1 stop
YYZ6:12 amToronto Pearson Intl
May 18
YYZ12:00 pmToronto Pearson Intl
12h 24m
2 stops
SFO9:24 pmSan Francisco
$240
WestJet
May 21
SFO7:30 amSan Francisco
8h 22m
1 stop
YYZ6:52 pmToronto Pearson Intl
May 25
YYZ9:00 amToronto Pearson Intl
11h 14m
2 stops
SFO5:14 pmSan Francisco
$246

momondo Fare Finder

 
Customize your flight search to find flights from San Francisco to Region of Ontario 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, momondo users made 832,500 searches. Data last updated January 8, 2026.
Use the filters below to find and compare flights from San Francisco to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Sun 2/1

9:32 pm-6:43 am

1 stop30h 11m

Toronto Pearson Intl

Mon 2/9

8:00 pm-6:20 pm

1 stop25h 20m

$219

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Thu 4/30

7:30 am-9:00 pm

2 stops10h 30m

Toronto Pearson Intl

Mon 5/4

1:30 pm-9:24 pm

1 stop10h 54m

$232

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Thu 2/5

8:18 pm-7:47 pm

1 stop20h 29m

Toronto Pearson Intl

Mon 2/9

8:00 pm-6:20 pm

1 stop25h 20m

$233

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Sun 2/1

9:32 pm-7:36 pm

2 stops19h 04m

Toronto Pearson Intl

Mon 2/9

8:00 pm-8:47 am

1 stop15h 47m

$235

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Tue 1/20

2:08 pm-7:55 pm

1 stop26h 47m

Toronto Pearson Intl

Thu 1/22

1:30 pm-9:37 am

2 stops23h 07m

$237

San FranciscoToronto

SFO - YYZ

SFOYYZ

San Francisco

Thu 1/22

10:15 am-6:40 am

1 stop17h 25m

Toronto Pearson Intl

Thu 1/29

12:30 pm-9:37 am

2 stops24h 07m

$239

San FranciscoMontreal

SFO - YUL

SFOYUL

San Francisco

Mon 2/23

8:25 am-4:49 pm

Nonstop5h 24m

Montreal Pierre Elliott Trudeau Intl

Tue 3/3

5:50 pm-9:22 pm

Nonstop6h 32m

$271

San FranciscoMontreal

SFO - YUL

SFOYUL

San Francisco

Mon 2/23

8:25 am-4:49 pm

Nonstop5h 24m

Montreal Pierre Elliott Trudeau Intl

Tue 3/3

5:50 pm-9:22 pm

Nonstop6h 32m

$273

San FranciscoThunder Bay

SFO - YQT

SFOYQT

San Francisco

Wed 1/21

12:00 pm-11:05 pm

1 stop8h 05m

Thunder Bay

Sun 1/25

5:00 am-9:30 pm

2 stops19h 30m

$432

San FranciscoThunder Bay

SFO - YQT

SFOYQT

San Francisco

Wed 1/21

5:00 am-11:05 pm

2 stops15h 05m

Thunder Bay

Sun 1/25

5:00 am-9:30 pm

2 stops19h 30m

$441

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 $348. If you aren’t able to travel during the month of February, then book flights to Region of Ontario from San Francisco during March instead. Flights to Region of Ontario in March, while not as cheap as those in February, still average around $359.

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

According to our data, Tuesday is the cheapest day to fly to Region of Ontario from San Francisco. The lowest ticket price found for a Tuesday departure recently was $555. 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 $685. 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 $441. 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 $720.

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 weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around $436 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 $363 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.

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

You could potentially save up to 23% 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

$193

Fastest flight time

4h 55m

Direct flights

Every day

Airports in Region of Ontario

123 airports
The best one-way flight to Region of Ontario from San Francisco in the past 72 hours is $193. The best round-trip flight deal from San Francisco to Region of Ontario found on momondo in the last 72 hours is $396.
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 123 airports in Region of Ontario. From San Francisco there are direct flights to Toronto Pearson Intl (YYZ).
Search flight deals

  • 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?

  • 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?

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
Air CanadaPriceFrom $136Free CancellationRating
7.1
10,603 reviews
Search Air Canada flights
WestJetPriceFrom $162Free CancellationRating
7.2
3,235 reviews
Search WestJet flights
Porter AirlinesPriceFrom $168Free CancellationRating
8.0
406 reviews
Search Porter Airlines flights
Air TransatPriceFrom $185Free CancellationRating
7.7
491 reviews
Search Air Transat flights
United AirlinesPriceFrom $192Free CancellationRating
7.4
9,141 reviews
Search United Airlines flights
DeltaPriceFrom $201Free CancellationRating
7.9
8,029 reviews
Search Delta flights
American AirlinesPriceFrom $403Free CancellationRating
7.2
11,095 reviews
Search American 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?

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.

An easier way to manage your Region of Ontario trip

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