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Cheap flights from Ontario to San Francisco from $185

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 12/16. 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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Find the cheapest flights from Ontario to San Francisco

Cheap round-trip flights

Alaska Airlines Logo
4:45 pm - 11:59 pmYYZ-OAK
10h 14m1 stop
Alaska Airlines Logo
6:40 am - 3:35 pmOAK-YYZ
29h 55m1 stop
$363Alaska Airlines
Find Deal
Wed, Dec 3 - Thu, Dec 4
Alaska Airlines Logo
4:45 pm - 11:59 pmYYZ-OAK
10h 14m1 stop
Alaska Airlines Logo
6:30 am - 3:35 pmOAK-YYZ
30h 05m1 stop
$364Alaska Airlines
Find Deal
Sat, Nov 1 - Mon, Nov 10
Alaska Airlines Logo
4:45 pm - 11:38 pmYYZ-OAK
9h 53m1 stop
Alaska Airlines Logo
6:30 am - 3:35 pmOAK-YYZ
30h 05m1 stop
$365Alaska Airlines
Find Deal
Thu, Feb 5 - Mon, Feb 9
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
$372Alaska Airlines
Find Deal
Thu, Feb 5 - Mon, Feb 9
Alaska Airlines Logo
4:45 pm - 12:03 amYYZ-OAK
10h 18m1 stop
Alaska Airlines Logo
8:05 pm - 3:00 pmOAK-YYZ
15h 55m1 stop
$380Alaska Airlines
Find Deal
Thu, Oct 16 - Mon, Oct 20
Alaska Airlines Logo
4:45 pm - 11:38 pmYYZ-OAK
9h 53m1 stop
Alaska Airlines Logo
6:30 am - 3:35 pmOAK-YYZ
30h 05m1 stop
$382Alaska Airlines
Find Deal
Sat, Jan 24 - Sun, Feb 1
Multiple Airlines Logo
8:00 am - 12:03 amYYZ-OAK
19h 03m2 stops
Multiple Airlines Logo
8:05 pm - 3:00 pmOAK-YYZ
15h 55m1 stop
$387Multiple Airlines
Find Deal
Wed, Oct 15 - Wed, Oct 22
Delta Logo
5:50 pm - 11:53 pmYYZ-OAK
9h 03m1 stop
Delta Logo
4:51 pm - 11:21 amOAK-YYZ
15h 30m2 stops
$406Delta
Find Deal
Fri, Oct 10 - Mon, Oct 20
Delta Logo
5:50 pm - 11:53 pmYYZ-OAK
9h 03m1 stop
Delta Logo
4:51 pm - 11:21 amOAK-YYZ
15h 30m2 stops
$423Delta
Find Deal
Thu, Oct 16 - Mon, Oct 20
Delta Logo
6:20 am - 9:32 pmYYZ-OAK
18h 12m2 stops
Delta Logo
4:51 pm - 11:21 amOAK-YYZ
15h 30m2 stops
$449Delta
Find Deal
Sat, Oct 11 - Mon, Oct 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
Dec 3
YYZ4:45 pmToronto Pearson Intl
10h 14m
1 stop
OAK11:59 pmOakland
Dec 4
OAK6:40 amOakland
29h 55m
1 stop
YYZ3:35 pmToronto Pearson Intl
$363
Find similar
Alaska Airlines
Nov 1
YYZ4:45 pmToronto Pearson Intl
10h 14m
1 stop
OAK11:59 pmOakland
Nov 10
OAK6:30 amOakland
30h 05m
1 stop
YYZ3:35 pmToronto Pearson Intl
$364
Find similar
Alaska Airlines
Feb 5
YYZ4:45 pmToronto Pearson Intl
9h 53m
1 stop
OAK11:38 pmOakland
Feb 9
OAK6:30 amOakland
30h 05m
1 stop
YYZ3:35 pmToronto Pearson Intl
$365
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
Oct 10
YYZ5:50 pmToronto Pearson Intl
9h 03m
1 stop
OAK11:53 pmOakland
Oct 20
OAK4:51 pmOakland
15h 30m
2 stops
YYZ11:21 amToronto Pearson Intl
$406
Find similar
Delta
Oct 16
YYZ5:50 pmToronto Pearson Intl
9h 03m
1 stop
OAK11:53 pmOakland
Oct 20
OAK4:51 pmOakland
15h 30m
2 stops
YYZ11:21 amToronto Pearson Intl
$423
Find similar
Delta
Oct 11
YYZ6:20 amToronto Pearson Intl
18h 12m
2 stops
OAK9:32 pmOakland
Oct 20
OAK4:51 pmOakland
15h 30m
2 stops
YYZ11:21 amToronto Pearson Intl
$449
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 September 16, 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

Wed 12/3

4:45 pm-11:59 pm

1 stop10h 14m

Oakland

Thu 12/4

6:40 am-3:35 pm

1 stop29h 55m

$363

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Sat 11/1

4:45 pm-11:59 pm

1 stop10h 14m

Oakland

Mon 11/10

6:30 am-3:35 pm

1 stop30h 05m

$364

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Thu 2/5

4:45 pm-11:38 pm

1 stop9h 53m

Oakland

Mon 2/9

6:30 am-3:35 pm

1 stop30h 05m

$365

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Thu 2/5

4:45 pm-11:38 pm

1 stop9h 53m

Oakland

Mon 2/9

6:45 pm-3:35 pm

2 stops17h 50m

$372

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Thu 10/16

4:45 pm-12:03 am

1 stop10h 18m

Oakland

Mon 10/20

8:05 pm-3:00 pm

1 stop15h 55m

$380

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Sat 1/24

4:45 pm-11:38 pm

1 stop9h 53m

Oakland

Sun 2/1

6:30 am-3:35 pm

1 stop30h 05m

$382

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Wed 10/15

8:00 am-12:03 am

2 stops19h 03m

Oakland

Wed 10/22

8:05 pm-3:00 pm

1 stop15h 55m

$387

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Fri 10/10

5:50 pm-11:53 pm

1 stop9h 03m

Oakland

Mon 10/20

4:51 pm-11:21 am

2 stops15h 30m

$406

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Thu 10/16

5:50 pm-11:53 pm

1 stop9h 03m

Oakland

Mon 10/20

4:51 pm-11:21 am

2 stops15h 30m

$423

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Sat 10/11

6:20 am-9:32 pm

2 stops18h 12m

Oakland

Mon 10/20

4:51 pm-11:21 am

2 stops15h 30m

$449

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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