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Cheap flights from Ontario to San Francisco from $221

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 7/28. 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
1 adult, Economy, 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
11:40 am - 11:56 pm
YYZ
-
OAK
15h 16m
2 stops
Delta Logo
6:00 am - 11:13 pm
OAK
-
YYZ
14h 13m
2 stops
$468Delta
Thu, Aug 27 - Wed, Sep 9
Delta Logo
2:24 pm - 11:56 pm
YYZ
-
OAK
12h 32m
2 stops
Delta Logo
6:00 am - 11:10 pm
OAK
-
YYZ
14h 10m
2 stops
$488Delta
Thu, Aug 20 - Mon, Aug 31
Delta Logo
7:45 am - 11:50 pm
YYZ
-
OAK
19h 05m
2 stops
Delta Logo
6:00 am - 11:13 pm
OAK
-
YYZ
14h 13m
2 stops
$508Delta
Fri, Jul 17 - Sat, Jul 25
Delta Logo
7:00 am - 10:01 pm
YUL
-
OAK
18h 01m
2 stops
Delta Logo
5:03 pm - 11:57 pm
OAK
-
YUL
27h 54m
2 stops
$510Delta
Sat, Sep 12 - Tue, Sep 15
Delta Logo
7:00 am - 10:01 pm
YUL
-
OAK
18h 01m
2 stops
Delta Logo
5:03 pm - 11:57 pm
OAK
-
YUL
27h 54m
2 stops
$513Delta
Sat, Sep 12 - Tue, Sep 15
Delta Logo
5:50 pm - 11:56 pm
YYZ
-
OAK
9h 06m
1 stop
Delta Logo
6:00 am - 11:57 pm
OAK
-
YYZ
14h 57m
2 stops
$518Delta
Thu, Aug 27 - Fri, Sep 4
Multiple Airlines Logo
9:00 am - 4:55 pm
YYZ
-
OAK
10h 55m
2 stops
Multiple Airlines Logo
8:22 pm - 8:55 pm
OAK
-
YYZ
21h 33m
1 stop
$531Multiple Airlines
Wed, Jul 15 - Wed, Jul 22
Delta Logo
2:15 pm - 11:56 pm
YYZ
-
OAK
12h 41m
2 stops
Delta Logo
5:05 pm - 10:51 pm
OAK
-
YYZ
26h 46m
2 stops
$537Delta
Thu, Oct 15 - Mon, Oct 19
Delta Logo
7:45 am - 11:56 pm
YYZ
-
OAK
19h 11m
2 stops
Delta Logo
6:00 am - 11:10 pm
OAK
-
YYZ
14h 10m
2 stops
$538Delta
Mon, Aug 24 - Mon, Aug 31
Multiple Airlines Logo
7:00 am - 9:51 pm
YYZ
-
OAK
17h 51m
2 stops
Multiple Airlines Logo
11:55 am - 1:05 am
OAK
-
YYZ
10h 10m
2 stops
$564Multiple Airlines
Fri, Sep 4 - Sun, Sep 6

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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
Sep 26
YYZ4:55 pmToronto Pearson Intl
8h 59m
1 stop
OAK10:54 pmOakland
Oct 5
OAK7:51 pmOakland
16h 54m
1 stop
YYZ3:45 pmToronto Pearson Intl
$540
Alaska Airlines
Sep 26
YYZ4:55 pmToronto Pearson Intl
8h 59m
1 stop
OAK10:54 pmOakland
Oct 4
OAK8:00 amOakland
28h 45m
2 stops
YYZ3:45 pmToronto Pearson Intl
$550
Alaska Airlines
Sep 19
YYZ4:55 pmToronto Pearson Intl
8h 59m
1 stop
OAK10:54 pmOakland
Sep 22
OAK7:51 pmOakland
16h 54m
1 stop
YYZ3:45 pmToronto Pearson Intl
$580

Delta flights from Region of Ontario to Oakland, California

Our best Delta deals on Region of Ontario to Oakland, California flight tickets
Delta
Aug 25
YYZ6:14 pmToronto Pearson Intl
8h 42m
2 stops
OAK11:56 pmOakland
Sep 9
OAK6:00 amOakland
14h 13m
2 stops
YYZ11:13 pmToronto Pearson Intl
$468
Delta
Aug 20
YYZ2:24 pmToronto Pearson Intl
12h 32m
2 stops
OAK11:56 pmOakland
Aug 31
OAK6:00 amOakland
14h 10m
2 stops
YYZ11:10 pmToronto Pearson Intl
$488
Delta
Jul 17
YYZ7:45 amToronto Pearson Intl
19h 05m
2 stops
OAK11:50 pmOakland
Jul 25
OAK6:00 amOakland
14h 13m
2 stops
YYZ11:13 pmToronto Pearson Intl
$508

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 June 19, 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 8/27

11:40 am-11:56 pm

2 stops15h 16m

Oakland

Wed 9/9

6:00 am-11:13 pm

2 stops14h 13m

$468

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Thu 8/20

2:24 pm-11:56 pm

2 stops12h 32m

Oakland

Mon 8/31

6:00 am-11:10 pm

2 stops14h 10m

$488

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Fri 7/17

7:45 am-11:50 pm

2 stops19h 05m

Oakland

Sat 7/25

6:00 am-11:13 pm

2 stops14h 13m

$508

MontrealOakland

YUL - OAK

YULOAK

Montreal Pierre Elliott Trudeau Intl

Sat 9/12

7:00 am-10:01 pm

2 stops18h 01m

Oakland

Tue 9/15

5:03 pm-11:57 pm

2 stops27h 54m

$510

MontrealOakland

YUL - OAK

YULOAK

Montreal Pierre Elliott Trudeau Intl

Sat 9/12

7:00 am-10:01 pm

2 stops18h 01m

Oakland

Tue 9/15

5:03 pm-11:57 pm

2 stops27h 54m

$513
Quickest round-trip

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Thu 8/27

5:50 pm-11:56 pm

1 stop9h 06m

Oakland

Fri 9/4

6:00 am-11:57 pm

2 stops14h 57m

$518

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Wed 7/15

9:00 am-4:55 pm

2 stops10h 55m

Oakland

Wed 7/22

8:22 pm-8:55 pm

1 stop21h 33m

$531

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Thu 10/15

2:15 pm-11:56 pm

2 stops12h 41m

Oakland

Mon 10/19

5:05 pm-10:51 pm

2 stops26h 46m

$537

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Mon 8/24

7:45 am-11:56 pm

2 stops19h 11m

Oakland

Mon 8/31

6:00 am-11:10 pm

2 stops14h 10m

$538

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Fri 9/4

7:00 am-9:51 pm

2 stops17h 51m

Oakland

Sun 9/6

11:55 am-1:05 am

2 stops10h 10m

$564

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

Can stopping save me money on Region of Ontario to Oakland, California flights?

You could potentially save up to 22% on your flight if you consider stops on a Region of Ontario to Oakland, California flight.

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

10h 55m

Direct flights

None
The fastest flight from Region of Ontario to Oakland, California takes 10h 55m
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.
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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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Sun 7/19
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