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Cheap flights from Ontario to San Francisco from $227

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to San Francisco departing on 6/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Find the cheapest flights from Ontario to San Francisco

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:10 am - 4:25 pm
YYZ
-
OAK
13h 15m
2 stops
Delta Logo
6:00 am - 11:58 pm
OAK
-
YYZ
14h 58m
2 stops
$420Delta
Thu, May 21 - Wed, May 27
Delta Logo
2:29 pm - 11:54 pm
YYZ
-
OAK
12h 25m
2 stops
Delta Logo
6:00 am - 4:35 pm
OAK
-
YYZ
7h 35m
1 stop
$427Delta
Tue, Jun 9 - Tue, Jun 16
Delta Logo
5:50 pm - 11:56 pm
YYZ
-
OAK
9h 06m
1 stop
Delta Logo
5:55 am - 4:39 pm
OAK
-
YYZ
7h 44m
1 stop
$446Delta
Sat, Oct 17 - Tue, Oct 20
Delta Logo
5:50 pm - 11:56 pm
YYZ
-
OAK
9h 06m
1 stop
Delta Logo
5:55 am - 4:39 pm
OAK
-
YYZ
7h 44m
1 stop
$447Delta
Sat, Oct 17 - Tue, Oct 20
Delta Logo
5:45 pm - 11:54 pm
YYZ
-
OAK
9h 09m
1 stop
Delta Logo
6:00 am - 11:14 pm
OAK
-
YYZ
14h 14m
2 stops
$450Delta
Tue, Jun 9 - Sat, Jun 20
Delta Logo
12:15 pm - 11:54 pm
YYZ
-
OAK
14h 39m
2 stops
Delta Logo
6:00 am - 4:35 pm
OAK
-
YYZ
7h 35m
1 stop
$452Delta
Tue, Jun 9 - Sun, Jun 28
Delta Logo
7:45 am - 11:54 pm
YYZ
-
OAK
19h 09m
2 stops
Delta Logo
6:00 am - 4:35 pm
OAK
-
YYZ
7h 35m
1 stop
$454Delta
Mon, Jun 8 - Tue, Jun 16
Delta Logo
6:30 am - 4:32 pm
YYZ
-
OAK
13h 02m
2 stops
Delta Logo
5:05 pm - 12:17 pm
OAK
-
YYZ
16h 12m
2 stops
$468Delta
Sat, Oct 17 - Tue, Oct 20
Multiple Airlines Logo
8:45 am - 9:44 pm
YOW
-
OAK
15h 59m
2 stops
Multiple Airlines Logo
11:30 pm - 12:50 am
OAK
-
YOW
22h 20m
2 stops
$850Multiple Airlines
Fri, Jun 12 - Fri, Jun 19
Multiple Airlines Logo
10:05 pm - 9:44 pm
YOW
-
OAK
26h 39m
2 stops
Multiple Airlines Logo
11:30 pm - 9:15 am
OAK
-
YOW
30h 45m
3 stops
$887Multiple Airlines
Sun, Jun 14 - Sun, Jun 21

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Delta flights from Region of Ontario to Oakland, California

Our best Delta deals on Region of Ontario to Oakland, California flight tickets
Delta
May 21
YYZ6:10 amToronto Pearson Intl
13h 15m
2 stops
OAK4:25 pmOakland
May 27
OAK6:00 amOakland
14h 58m
2 stops
YYZ11:58 pmToronto Pearson Intl
$420
Delta
Jun 9
YYZ2:29 pmToronto Pearson Intl
12h 25m
2 stops
OAK11:54 pmOakland
Jun 16
OAK6:00 amOakland
7h 35m
1 stop
YYZ4:35 pmToronto Pearson Intl
$427
Delta
Oct 17
YYZ5:50 pmToronto Pearson Intl
9h 06m
1 stop
OAK11:56 pmOakland
Oct 20
OAK5:55 amOakland
7h 44m
1 stop
YYZ4:39 pmToronto Pearson Intl
$446

Alaska Airlines flights from Region of Ontario to Oakland, California

Our best Alaska Airlines deals on Region of Ontario to Oakland, California flight tickets
Alaska Airlines
May 6
YYZ4:55 pmToronto Pearson Intl
8h 37m
1 stop
OAK10:32 pmOakland
May 15
OAK7:00 amOakland
29h 45m
1 stop
YYZ3:45 pmToronto Pearson Intl
$747
Alaska Airlines
May 6
YYZ4:55 pmToronto Pearson Intl
18h 58m
2 stops
OAK8:53 amOakland
May 15
OAK7:00 amOakland
29h 45m
1 stop
YYZ3:45 pmToronto Pearson Intl
$757
Alaska Airlines
May 6
YYZ4:55 pmToronto Pearson Intl
18h 58m
2 stops
OAK8:53 amOakland
May 15
OAK7:03 pmOakland
17h 42m
2 stops
YYZ3:45 pmToronto Pearson Intl
$762

momondo Fare Finder

 
Customize your flight search to find flights from Region of Ontario to Oakland, California 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 May 3, 2026.
Use the filters below to find and compare flights from Ontario to Oakland, California that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Thu 5/21

6:10 am-4:25 pm

2 stops13h 15m

Oakland

Wed 5/27

6:00 am-11:58 pm

2 stops14h 58m

$420

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Tue 6/9

2:29 pm-11:54 pm

2 stops12h 25m

Oakland

Tue 6/16

6:00 am-4:35 pm

1 stop7h 35m

$427
Quickest round-trip

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Sat 10/17

5:50 pm-11:56 pm

1 stop9h 06m

Oakland

Tue 10/20

5:55 am-4:39 pm

1 stop7h 44m

$446

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Sat 10/17

5:50 pm-11:56 pm

1 stop9h 06m

Oakland

Tue 10/20

5:55 am-4:39 pm

1 stop7h 44m

$447

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Tue 6/9

5:45 pm-11:54 pm

1 stop9h 09m

Oakland

Sat 6/20

6:00 am-11:14 pm

2 stops14h 14m

$450

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Tue 6/9

12:15 pm-11:54 pm

2 stops14h 39m

Oakland

Sun 6/28

6:00 am-4:35 pm

1 stop7h 35m

$452

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Mon 6/8

7:45 am-11:54 pm

2 stops19h 09m

Oakland

Tue 6/16

6:00 am-4:35 pm

1 stop7h 35m

$454

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Sat 10/17

6:30 am-4:32 pm

2 stops13h 02m

Oakland

Tue 10/20

5:05 pm-12:17 pm

2 stops16h 12m

$468

OttawaOakland

YOW - OAK

YOWOAK

Ottawa

Fri 6/12

8:45 am-9:44 pm

2 stops15h 59m

Oakland

Fri 6/19

11:30 pm-12:50 am

2 stops22h 20m

$850

OttawaOakland

YOW - OAK

YOWOAK

Ottawa

Sun 6/14

10:05 pm-9:44 pm

2 stops26h 39m

Oakland

Sun 6/21

11:30 pm-9:15 am

3 stops30h 45m

$887

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 San Francisco from

How to get the cheapest flight ticket from Region of Ontario to Oakland, California

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 airline that flies from Ontario to Oakland?

Delta is the most popular carrier operating from Ontario to Oakland

What airlines fly to Oakland, California?

Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to Oakland, California from Region of Ontario according to our data. Air Canada is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Oakland, California. Keep in mind that there are 7 different airlines that fly to Oakland, California on a routine basis, so you have a few additional options to choose from.

Cheap Region of Ontario to Oakland, California flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Oakland, California

Fastest flight time

8h 37m

Direct flights

None
The fastest flight from Region of Ontario to Oakland, California takes 8h 37m
There are no direct flights from Region of Ontario to Oakland, California. There are no popular flight routes from Region of Ontario to Oakland, California.
Search flight deals

Frequently asked questions about flying from Ontario to Oakland, California

  • When did momondo last update prices for flights from Ontario to Oakland Airport?

    Prices for flights from Ontario to Oakland Airport are updated daily.

  • How old do you have to be to fly from Ontario to Oakland Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario to Oakland Airport.

  • What documentation or ID do you need to fly to Oakland Airport?

    The required travel and health documents for your Oakland Airport 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 Oakland Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Oakland?

It is quick and easy to find Ontario to Oakland flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Oakland that suits you.

Can I find flights from Ontario to Oakland with flexible booking policies on momondo?

Flights from Ontario to Oakland 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 Ontario to Oakland?

Once all potential Ontario to Oakland flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to Oakland, momondo offers a useful price alert feature which will track prices for flights to Oakland from Ontario and alert you when they change.

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