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Cheap flights from Ontario to San Francisco from $189

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 1/20. 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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Cheap round-trip flights

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Alaska Airlines Logo
4:45 pm - 11:38 pmYYZ-OAK
9h 53m1 stop
Alaska Airlines Logo
6:35 pm - 3:35 pmOAK-YYZ
18h 00m1 stop
$350Alaska Airlines
Find Deal
Mon, Feb 23 - Wed, Feb 25
Delta Logo
6:05 pm - 12:08 amYYZ-OAK
9h 03m2 stops
Delta Logo
5:55 am - 11:11 pmOAK-YYZ
14h 16m2 stops
$381Delta
Find Deal
Sun, Dec 7 - Mon, Dec 15
Alaska Airlines Logo
4:45 pm - 10:41 amYYZ-OAK
20h 56m1 stop
Alaska Airlines Logo
2:31 pm - 3:35 pmOAK-YYZ
22h 04m1 stop
$385Alaska Airlines
Find Deal
Tue, Dec 9 - Wed, Dec 10
Alaska Airlines Logo
4:45 pm - 11:59 pmYYZ-OAK
10h 14m1 stop
Alaska Airlines Logo
11:21 am - 3:35 pmOAK-YYZ
25h 14m1 stop
$389Alaska Airlines
Find Deal
Mon, Dec 8 - Wed, Dec 10
Alaska Airlines Logo
4:45 pm - 11:59 pmYYZ-OAK
10h 14m1 stop
Alaska Airlines Logo
9:45 am - 3:35 pmOAK-YYZ
26h 50m2 stops
$395Alaska Airlines
Find Deal
Tue, Dec 9 - Wed, Dec 10
Delta Logo
7:40 am - 12:08 amYYZ-OAK
19h 28m2 stops
Delta Logo
5:55 am - 11:27 pmOAK-YYZ
14h 32m2 stops
$405Delta
Find Deal
Thu, Dec 11 - Mon, Dec 15
Alaska Airlines Logo
4:45 pm - 11:59 pmYYZ-OAK
10h 14m1 stop
Alaska Airlines Logo
2:31 pm - 3:35 pmOAK-YYZ
22h 04m1 stop
$412Alaska Airlines
Find Deal
Wed, Dec 3 - Tue, Dec 9
Alaska Airlines Logo
4:45 pm - 11:38 pmYYZ-OAK
9h 53m1 stop
Alaska Airlines Logo
8:00 am - 3:35 pmOAK-YYZ
28h 35m2 stops
$414Alaska Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11
Alaska Airlines Logo
4:45 pm - 11:38 pmYYZ-OAK
9h 53m1 stop
Alaska Airlines Logo
6:45 pm - 3:35 pmOAK-YYZ
17h 50m2 stops
$415Alaska Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11
Multiple Airlines Logo
7:30 pm - 11:38 pmYUL-OAK
31h 08m2 stops
Multiple Airlines Logo
6:35 pm - 3:57 pmOAK-YUL
18h 22m2 stops
$700Multiple Airlines
Find Deal
Mon, Feb 16 - Fri, Feb 20

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
Feb 23
YYZ4:45 pmToronto Pearson Intl
9h 53m
1 stop
OAK11:38 pmOakland
Feb 25
OAK6:35 pmOakland
18h 00m
1 stop
YYZ3:35 pmToronto Pearson Intl
$350
Find similar
Alaska Airlines
Dec 9
YYZ4:45 pmToronto Pearson Intl
20h 56m
1 stop
OAK10:41 amOakland
Dec 10
OAK2:31 pmOakland
22h 04m
1 stop
YYZ3:35 pmToronto Pearson Intl
$385
Find similar
Alaska Airlines
Dec 8
YYZ4:45 pmToronto Pearson Intl
10h 14m
1 stop
OAK11:59 pmOakland
Dec 10
OAK11:21 amOakland
25h 14m
1 stop
YYZ3:35 pmToronto Pearson Intl
$389
Find similar

Delta flights from Region of Ontario to Oakland, California

Our best Delta deals on Region of Ontario to Oakland, California flight tickets
Delta
Dec 7
YYZ6:05 pmToronto Pearson Intl
9h 03m
2 stops
OAK12:08 amOakland
Dec 15
OAK5:55 amOakland
14h 16m
2 stops
YYZ11:11 pmToronto Pearson Intl
$381
Find similar
Delta
Dec 11
YYZ7:40 amToronto Pearson Intl
19h 28m
2 stops
OAK12:08 amOakland
Dec 15
OAK5:55 amOakland
14h 32m
2 stops
YYZ11:27 pmToronto Pearson Intl
$405
Find similar
Delta
Dec 7
YYZ6:05 pmToronto Pearson Intl
9h 03m
2 stops
OAK12:08 amOakland
Dec 11
OAK5:55 amOakland
14h 32m
2 stops
YYZ11:27 pmToronto Pearson Intl
$428
Find similar

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 November 3, 2025.
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

Mon 2/23

4:45 pm-11:38 pm

1 stop9h 53m

Oakland

Wed 2/25

6:35 pm-3:35 pm

1 stop18h 00m

$350

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Sun 12/7

6:05 pm-12:08 am

2 stops9h 03m

Oakland

Mon 12/15

5:55 am-11:11 pm

2 stops14h 16m

$381

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Tue 12/9

4:45 pm-10:41 am

1 stop20h 56m

Oakland

Wed 12/10

2:31 pm-3:35 pm

1 stop22h 04m

$385

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Mon 12/8

4:45 pm-11:59 pm

1 stop10h 14m

Oakland

Wed 12/10

11:21 am-3:35 pm

1 stop25h 14m

$389

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Tue 12/9

4:45 pm-11:59 pm

1 stop10h 14m

Oakland

Wed 12/10

9:45 am-3:35 pm

2 stops26h 50m

$395

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Thu 12/11

7:40 am-12:08 am

2 stops19h 28m

Oakland

Mon 12/15

5:55 am-11:27 pm

2 stops14h 32m

$405

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Wed 12/3

4:45 pm-11:59 pm

1 stop10h 14m

Oakland

Tue 12/9

2:31 pm-3:35 pm

1 stop22h 04m

$412

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Tue 3/10

4:45 pm-11:38 pm

1 stop9h 53m

Oakland

Wed 3/11

8:00 am-3:35 pm

2 stops28h 35m

$414

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Tue 3/10

4:45 pm-11:38 pm

1 stop9h 53m

Oakland

Wed 3/11

6:45 pm-3:35 pm

2 stops17h 50m

$415

MontrealOakland

YUL - OAK

YULOAK

Montreal Pierre Elliott Trudeau Intl

Mon 2/16

7:30 pm-11:38 pm

2 stops31h 08m

Oakland

Fri 2/20

6:35 pm-3:57 pm

2 stops18h 22m

$700

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 day to depart on your flight to Oakland, California?

According to our data, Wednesday is the cheapest day to fly to Oakland, California from Region of Ontario. The lowest ticket price found for a Wednesday departure recently was $406. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Region of Ontario to Oakland, California for around $528.

What is the cheapest time of day to depart on your flight to Oakland, California?

In the morning is the cheapest time of day to fly from Region of Ontario to Oakland, California when you can find flight prices for as low as $406. Flying to Oakland, California in the morning is an ideal time because this is during off-peak travel hours. Flights in the afternoon are often more expensive with an average ticket price of $499.

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

Direct flights

None
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.

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