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Cheap flights from Ontario to San Francisco from $201

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 3/12. 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

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Find the cheapest flights from Ontario to San Francisco

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
4:45 pm - 4:37 pm
YYZ
-
OAK
26h 52m
1 stop
Alaska Airlines Logo
5:31 pm - 3:35 pm
OAK
-
YYZ
19h 04m
1 stop
$336Alaska Airlines
Fri, Mar 6 - Tue, Mar 10
Alaska Airlines Logo
4:45 pm - 9:24 am
YYZ
-
OAK
19h 39m
2 stops
Alaska Airlines Logo
6:15 am - 3:35 pm
OAK
-
YYZ
30h 20m
1 stop
$371Alaska Airlines
Mon, Mar 9 - Mon, Mar 16
Alaska Airlines Logo
4:45 pm - 10:49 pm
YYZ
-
OAK
9h 04m
1 stop
Alaska Airlines Logo
5:31 pm - 3:35 pm
OAK
-
YYZ
19h 04m
1 stop
$374Alaska Airlines
Fri, Feb 27 - Mon, Mar 2
Alaska Airlines Logo
4:45 pm - 10:49 pm
YYZ
-
OAK
9h 04m
1 stop
Alaska Airlines Logo
5:31 pm - 3:35 pm
OAK
-
YYZ
19h 04m
1 stop
$375Alaska Airlines
Fri, Feb 20 - Mon, Mar 2
Alaska Airlines Logo
4:55 pm - 11:43 pm
YYZ
-
OAK
9h 48m
1 stop
Alaska Airlines Logo
6:20 am - 3:45 pm
OAK
-
YYZ
30h 25m
1 stop
$377Alaska Airlines
Wed, Apr 15 - Fri, Apr 24
Alaska Airlines Logo
4:45 pm - 10:49 pm
YYZ
-
OAK
9h 04m
1 stop
Alaska Airlines Logo
10:04 am - 3:35 pm
OAK
-
YYZ
26h 31m
2 stops
$384Alaska Airlines
Mon, Mar 2 - Wed, Mar 4
Alaska Airlines Logo
4:55 pm - 10:32 pm
YYZ
-
OAK
8h 37m
1 stop
Alaska Airlines Logo
6:20 am - 3:45 pm
OAK
-
YYZ
30h 25m
1 stop
$388Alaska Airlines
Thu, Apr 23 - Fri, Apr 24
Delta Logo
6:00 am - 11:54 pm
YUL
-
OAK
20h 54m
2 stops
Delta Logo
5:55 am - 11:38 am
OAK
-
YUL
26h 43m
2 stops
$444Delta
Wed, Apr 15 - Sat, Apr 18
Delta Logo
2:40 pm - 11:55 am
YUL
-
OAK
24h 15m
2 stops
Delta Logo
12:35 pm - 11:40 pm
OAK
-
YUL
32h 05m
2 stops
$452Delta
Tue, Feb 24 - Tue, Mar 10
Multiple Airlines Logo
6:10 pm - 11:58 pm
YHM
-
OAK
32h 48m
2 stops
Multiple Airlines Logo
7:00 am - 5:16 pm
OAK
-
YHM
31h 16m
2 stops
$737Multiple Airlines
Wed, Mar 11 - Wed, Mar 18

Delta flights from Region of Ontario to Oakland, California

Our best Delta deals on Region of Ontario to Oakland, California flight tickets
Delta
Apr 15
YUL6:00 amMontreal Pierre Elliott Trudeau Intl
20h 54m
2 stops
OAK11:54 pmOakland
Apr 18
OAK5:55 amOakland
26h 43m
2 stops
YUL11:38 amMontreal Pierre Elliott Trudeau Intl
$444
Delta
Feb 24
YUL2:40 pmMontreal Pierre Elliott Trudeau Intl
24h 15m
2 stops
OAK11:55 amOakland
Mar 10
OAK12:35 pmOakland
32h 05m
2 stops
YUL11:40 pmMontreal Pierre Elliott Trudeau Intl
$452
Delta
Mar 13
YYZ5:10 pmToronto Pearson Intl
21h 41m
2 stops
OAK11:51 amOakland
Mar 18
OAK5:55 amOakland
14h 11m
2 stops
YYZ11:06 pmToronto Pearson Intl
$554

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
Mar 6
YYZ4:45 pmToronto Pearson Intl
26h 52m
1 stop
OAK4:37 pmOakland
Mar 10
OAK5:31 pmOakland
19h 04m
1 stop
YYZ3:35 pmToronto Pearson Intl
$336
Alaska Airlines
Mar 9
YYZ4:45 pmToronto Pearson Intl
19h 39m
2 stops
OAK9:24 amOakland
Mar 16
OAK6:15 amOakland
30h 20m
1 stop
YYZ3:35 pmToronto Pearson Intl
$371
Alaska Airlines
Feb 27
YYZ4:45 pmToronto Pearson Intl
9h 04m
1 stop
OAK10:49 pmOakland
Mar 2
OAK5:31 pmOakland
19h 04m
1 stop
YYZ3:35 pmToronto Pearson Intl
$374

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 January 27, 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

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Fri 3/6

4:45 pm-4:37 pm

1 stop26h 52m

Oakland

Tue 3/10

5:31 pm-3:35 pm

1 stop19h 04m

$336

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Mon 3/9

4:45 pm-9:24 am

2 stops19h 39m

Oakland

Mon 3/16

6:15 am-3:35 pm

1 stop30h 20m

$371

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Fri 2/27

4:45 pm-10:49 pm

1 stop9h 04m

Oakland

Mon 3/2

5:31 pm-3:35 pm

1 stop19h 04m

$374

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Fri 2/20

4:45 pm-10:49 pm

1 stop9h 04m

Oakland

Mon 3/2

5:31 pm-3:35 pm

1 stop19h 04m

$375

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Wed 4/15

4:55 pm-11:43 pm

1 stop9h 48m

Oakland

Fri 4/24

6:20 am-3:45 pm

1 stop30h 25m

$377

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Mon 3/2

4:45 pm-10:49 pm

1 stop9h 04m

Oakland

Wed 3/4

10:04 am-3:35 pm

2 stops26h 31m

$384

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Thu 4/23

4:55 pm-10:32 pm

1 stop8h 37m

Oakland

Fri 4/24

6:20 am-3:45 pm

1 stop30h 25m

$388

MontrealOakland

YUL - OAK

YULOAK

Montreal Pierre Elliott Trudeau Intl

Wed 4/15

6:00 am-11:54 pm

2 stops20h 54m

Oakland

Sat 4/18

5:55 am-11:38 am

2 stops26h 43m

$444

MontrealOakland

YUL - OAK

YULOAK

Montreal Pierre Elliott Trudeau Intl

Tue 2/24

2:40 pm-11:55 am

2 stops24h 15m

Oakland

Tue 3/10

12:35 pm-11:40 pm

2 stops32h 05m

$452

HamiltonOakland

YHM - OAK

YHMOAK

Hamilton

Wed 3/11

6:10 pm-11:58 pm

2 stops32h 48m

Oakland

Wed 3/18

7:00 am-5:16 pm

2 stops31h 16m

$737

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?

Alaska Airlines and Delta are the most popular carriers 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 46% 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

9h 04m

Direct flights

None
The fastest flight from Region of Ontario to Oakland, California takes 9h 04m
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

  • 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.

An easier way to manage your Oakland, California trip

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