What is the cheapest airline that flies from Oakland to Ontario?

Delta is the most popular carrier operating from Oakland to Ontario

What airlines fly to Region of Ontario?

Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to Region of Ontario from Oakland, California 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 Region of Ontario. Keep in mind that there are 8 different airlines that fly to Region of Ontario on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Oakland Airport to Ontario refresh daily.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Oakland Airport to Ontario.

What documentation or ID do you need to fly to Ontario?

The necessary travel and health documents for your Ontario trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$151 Cheap Flights from Oakland to Ontario in 2025/26

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Find the cheapest flights from Oakland, California to Ontario

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:17 pm - 3:35 pm

OAK

YYZ

19h 18m1 stop

4:45 pm - 10:28 am

YYZ

OAK

20h 43m1 stop

$332Multiple Airlines

Fri, Jan 9 - Sat, Jan 17

8:10 am - 3:35 pm

OAK

YYZ

28h 25m1 stop

4:45 pm - 4:23 pm

YYZ

OAK

26h 38m1 stop

$336Alaska Airlines

Sun, Jan 18 - Wed, Jan 21

8:10 am - 3:35 pm

OAK

YYZ

28h 25m1 stop

4:45 pm - 11:03 am

YYZ

OAK

21h 18m1 stop

$345Alaska Airlines

Wed, Jan 21 - Mon, Jan 26

8:10 am - 3:35 pm

OAK

YYZ

28h 25m1 stop

4:45 pm - 4:23 pm

YYZ

OAK

26h 38m1 stop

$348Alaska Airlines

Fri, Jan 16 - Tue, Jan 20

5:17 pm - 3:35 pm

OAK

YYZ

19h 18m1 stop

4:45 pm - 10:28 am

YYZ

OAK

20h 43m1 stop

$353Alaska Airlines

Thu, Jan 22 - Tue, Jan 27

8:10 am - 3:35 pm

OAK

YYZ

28h 25m1 stop

4:45 pm - 10:28 am

YYZ

OAK

20h 43m1 stop

$356Alaska Airlines

Wed, Jan 14 - Tue, Jan 20

5:55 am - 3:55 pm

OAK

YUL

31h 00m2 stops

7:00 am - 4:10 pm

YUL

OAK

36h 10m2 stops

$557Delta

Wed, Mar 18 - Mon, Mar 23

5:55 am - 7:05 am

OAK

YUL

22h 10m2 stops

12:42 pm - 4:10 pm

YUL

OAK

30h 28m2 stops

$736Delta

Fri, Mar 20 - Sun, Mar 22

12:35 pm - 7:05 am

OAK

YUL

15h 30m2 stops

12:42 pm - 4:10 pm

YUL

OAK

30h 28m2 stops

$771Delta

Thu, Mar 19 - Sun, Mar 22

11:17 pm - 10:03 pm

OAK

YTZ

19h 46m3 stops

2:00 pm - 8:35 pm

YTZ

OAK

33h 35m2 stops

$822Multiple Airlines

Sun, Jan 25 - Sun, Feb 1

Delta flights from Oakland, California to Region of Ontario

Our best Delta deals on Oakland, California to Region of Ontario flight tickets

Delta

Jan 21

OAK5:55 amOakland

10h 13m

2 stops

YYZ7:08 pmToronto Pearson Intl

Jan 24

YYZ6:10 amToronto Pearson Intl

18h 28m

2 stops

OAK9:38 pmOakland

$491

Find similar

Delta

Mar 18

OAK5:55 amOakland

13h 43m

2 stops

YYZ10:38 pmToronto Pearson Intl

Mar 23

YYZ5:10 pmToronto Pearson Intl

9h 36m

2 stops

OAK11:46 pmOakland

$527

Find similar

Delta

Mar 18

OAK5:55 amOakland

31h 00m

2 stops

YUL3:55 pmMontreal Pierre Elliott Trudeau Intl

Mar 23

YUL7:00 amMontreal Pierre Elliott Trudeau Intl

36h 10m

2 stops

OAK4:10 pmOakland

$557

Find similar

Alaska Airlines flights from Oakland, California to Region of Ontario

Our best Alaska Airlines deals on Oakland, California to Region of Ontario flight tickets

Alaska Airlines

Jan 18

OAK8:10 amOakland

28h 25m

1 stop

YYZ3:35 pmToronto Pearson Intl

Jan 21

YYZ4:45 pmToronto Pearson Intl

26h 38m

1 stop

OAK4:23 pmOakland

$336

Find similar

Alaska Airlines

Jan 21

OAK8:10 amOakland

28h 25m

1 stop

YYZ3:35 pmToronto Pearson Intl

Jan 26

YYZ4:45 pmToronto Pearson Intl

21h 18m

1 stop

OAK11:03 amOakland

$345

Find similar

Alaska Airlines

Jan 16

OAK8:10 amOakland

28h 25m

1 stop

YYZ3:35 pmToronto Pearson Intl

Jan 20

YYZ4:45 pmToronto Pearson Intl

26h 38m

1 stop

OAK4:23 pmOakland

$348

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Oakland, California to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OaklandToronto

OAK - YYZ

OAKYYZ

Oakland

Fri 1/9

5:17 pm-3:35 pm

1 stop19h 18m

Toronto Pearson Intl

Sat 1/17

4:45 pm-10:28 am

1 stop20h 43m

$332

OaklandToronto

OAK - YYZ

OAKYYZ

Oakland

Sun 1/18

8:10 am-3:35 pm

1 stop28h 25m

Toronto Pearson Intl

Wed 1/21

4:45 pm-4:23 pm

1 stop26h 38m

$336

OaklandToronto

OAK - YYZ

OAKYYZ

Oakland

Wed 1/21

8:10 am-3:35 pm

1 stop28h 25m

Toronto Pearson Intl

Mon 1/26

4:45 pm-11:03 am

1 stop21h 18m

$345

OaklandToronto

OAK - YYZ

OAKYYZ

Oakland

Fri 1/16

8:10 am-3:35 pm

1 stop28h 25m

Toronto Pearson Intl

Tue 1/20

4:45 pm-4:23 pm

1 stop26h 38m

$348

OaklandToronto

OAK - YYZ

OAKYYZ

Oakland

Thu 1/22

5:17 pm-3:35 pm

1 stop19h 18m

Toronto Pearson Intl

Tue 1/27

4:45 pm-10:28 am

1 stop20h 43m

$353

OaklandToronto

OAK - YYZ

OAKYYZ

Oakland

Wed 1/14

8:10 am-3:35 pm

1 stop28h 25m

Toronto Pearson Intl

Tue 1/20

4:45 pm-10:28 am

1 stop20h 43m

$356

OaklandMontreal

OAK - YUL

OAKYUL

Oakland

Wed 3/18

5:55 am-3:55 pm

2 stops31h 00m

Montreal Pierre Elliott Trudeau Intl

Mon 3/23

7:00 am-4:10 pm

2 stops36h 10m

$557

OaklandMontreal

OAK - YUL

OAKYUL

Oakland

Fri 3/20

5:55 am-7:05 am

2 stops22h 10m

Montreal Pierre Elliott Trudeau Intl

Sun 3/22

12:42 pm-4:10 pm

2 stops30h 28m

$736

OaklandMontreal

OAK - YUL

OAKYUL

Oakland

Thu 3/19

12:35 pm-7:05 am

2 stops15h 30m

Montreal Pierre Elliott Trudeau Intl

Sun 3/22

12:42 pm-4:10 pm

2 stops30h 28m

$771

OaklandToronto

OAK - YTZ

OAKYTZ

Oakland

Sun 1/25

11:17 pm-10:03 pm

3 stops19h 46m

Toronto Island

Sun 2/1

2:00 pm-8:35 pm

2 stops33h 35m

$822

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Prices

Airlines

What is the cheapest day to depart on your flight to Region of Ontario?

According to our data, Wednesday is the cheapest day to fly to Region of Ontario from Oakland, California. The lowest ticket price found for a Wednesday departure recently was $340. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Oakland, California to Region of Ontario on a Monday will generally be more expensive and average around $836. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Region of Ontario?

According to our data, the cheapest time of day to fly to Region of Ontario is in the afternoon. momondo users have found flights departing from Oakland, California to Region of Ontario in the afternoon for as low as $340. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights at noon are often more expensive with an average ticket price of $537.

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

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

Fastest flight time	12h 50m
Direct flights	None

The fastest flight from Oakland, California to Region of Ontario takes 12h 50m

There are no direct flights from Oakland, California to Region of Ontario. There are no popular flight routes from Oakland, California to Region of Ontario.

Search flight deals

When did momondo last update prices for flights from Oakland Airport to Ontario?
Prices for flights from Oakland Airport to Ontario refresh daily.
How old do you have to be to fly from Oakland Airport to Ontario?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Oakland Airport to Ontario.
What documentation or ID do you need to fly to Ontario?
The necessary travel and health documents for your Ontario trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Oakland to Ontario. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Oakland to Ontario flights to just show those with flexible booking policies.

How can momondo help me find flights from Oakland to Ontario?

Once all potential Oakland to Ontario 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 Oakland to Ontario right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Ontario from Oakland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.