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Oakland

$260+ Cheap flights from Ontario to Oakland, CA (OAK)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — OAK
Aug 6 — Aug 131
Thu 8/6
Thu 8/13
1 adult, Economy
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Cheap flight deals from Ontario to Oakland

Cheapest flights from Ontario to Oakland
Explore the most affordable flight options available from Ontario to Oakland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 7, 2026.

This Delta deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/911:38 am
YYZ
-
OAK
2 stops15h 21m
Delta
Fri 9/185:00 pm
OAK
-
YYZ
2 stops15h 25m
Delta
Deal found 7/6$462
This Delta deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/186:14 pm
YYZ
-
OAK
2 stops8h 42m
Delta
Tue 8/256:00 am
OAK
-
YYZ
1 stop7h 40m
Delta
Deal found 7/4$463
This Delta deal was found by Cheapflights users on 7/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/275:50 pm
YYZ
-
OAK
1 stop9h 06m
Delta
Mon 8/315:00 pm
OAK
-
YYZ
2 stops15h 25m
Delta
Deal found 7/5$482
This Delta deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:50 pm
YYZ
-
OAK
1 stop9h 06m
Delta
Mon 8/315:00 pm
OAK
-
YYZ
2 stops15h 25m
Delta
Deal found 7/2$483
This Delta deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/287:00 am
YUL
-
OAK
2 stops19h 56m
Delta
Sat 10/3112:31 pm
OAK
-
YUL
2 stops21h 08m
Delta
Deal found 7/2$495
This Delta deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/86:00 am
YYZ
-
OAK
2 stops13h 20m
Delta
Mon 9/146:00 am
OAK
-
YYZ
2 stops13h 59m
Delta
Deal found 7/6$511
This Delta deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/56:10 am
YYZ
-
OAK
2 stops13h 04m
Delta
Wed 8/126:00 am
OAK
-
YYZ
2 stops14h 57m
Delta
Deal found 7/6$512
This Delta deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/116:00 am
YUL
-
OAK
2 stops20h 56m
Delta
Tue 8/185:00 pm
OAK
-
YUL
2 stops27h 40m
Delta
Deal found 7/3$520
This Delta deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:00 am
YUL
-
OAK
2 stops19h 59m
Delta
Mon 9/285:00 pm
OAK
-
YUL
2 stops20h 19m
Delta
Deal found 7/3$524
This Delta deal was found by Cheapflights users on 7/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/87:45 am
YYZ
-
OAK
2 stops19h 14m
Delta
Wed 9/166:00 am
OAK
-
YYZ
2 stops14h 59m
Delta
Deal found 7/6$531
This Alaska Airlines deal was found by Cheapflights users on 7/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/174:55 pm
YYZ
-
OAK
1 stop9h 00m
Alaska Airlines
Mon 10/197:00 am
OAK
-
YYZ
1 stop29h 45m
Alaska Airlines
Deal found 7/4$534
This Delta deal was found by Cheapflights users on 7/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/155:54 pm
YYZ
-
OAK
1 stop9h 05m
Delta
Thu 9/246:00 am
OAK
-
YYZ
1 stop7h 44m
Delta
Deal found 7/7$548

Find flight deals from Ontario to Oakland

Keep the following information in mind while searching for Ontario to Oakland flight deals. Data was last updated July 7, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$462
(Delta)

One-way from

$260
(Delta)

Popular in

July

Cheapest in

November

Average price

$508
Provider with most accurate pricing for Toronto (YTO)-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Toronto (YTO)-San Francisco flights.
Search Deals
From Ontario to Oakland
Search Deals
One-way flight from Ontario to Oakland
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($48 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Oakland 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, Cheapflights users made 2,558,603 searches. Data last updated July 7, 2026.
Use the filters below to find and compare flights from Ontario to Oakland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Tue 9/15

5:54 pm-11:59 pm

1 stop9h 05m

Oakland

Tue 9/22

5:00 pm-11:25 am

2 stops15h 25m

$462

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Wed 9/9

5:54 pm-11:59 pm

1 stop9h 05m

Oakland

Sun 9/13

5:00 pm-10:23 am

2 stops14h 23m

$462

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Thu 8/27

5:50 pm-11:56 pm

1 stop9h 06m

Oakland

Mon 8/31

5:00 pm-11:25 am

2 stops15h 25m

$482

MontrealOakland

YUL - OAK

YULOAK

Montreal Pierre Elliott Trudeau Intl

Wed 10/28

7:00 am-11:56 pm

2 stops19h 56m

Oakland

Sat 10/31

12:31 pm-12:39 pm

2 stops21h 08m

$495

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Wed 8/5

6:10 am-4:14 pm

2 stops13h 04m

Oakland

Wed 8/12

6:00 am-11:57 pm

2 stops14h 57m

$512

MontrealOakland

YUL - OAK

YULOAK

Montreal Pierre Elliott Trudeau Intl

Thu 9/24

7:00 am-11:59 pm

2 stops19h 59m

Oakland

Mon 9/28

5:00 pm-4:19 pm

2 stops20h 19m

$524

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Sat 10/17

4:55 pm-10:55 pm

1 stop9h 00m

Oakland

Mon 10/19

12:05 pm-3:45 pm

2 stops24h 40m

$543

MontrealOakland

YUL - OAK

YULOAK

Montreal Pierre Elliott Trudeau Intl

Fri 12/25

6:00 am-11:56 pm

2 stops20h 56m

Oakland

Mon 1/11

5:05 pm-11:35 pm

2 stops27h 30m

$555

MontrealOakland

YUL - OAK

YULOAK

Montreal Pierre Elliott Trudeau Intl

Thu 12/24

6:00 am-11:56 pm

2 stops20h 56m

Oakland

Sat 1/16

5:55 am-11:51 pm

2 stops14h 56m

$555

MontrealOakland

YUL - OAK

YULOAK

Montreal Pierre Elliott Trudeau Intl

Tue 8/18

7:00 am-11:56 pm

2 stops19h 56m

Oakland

Sun 8/30

6:00 am-1:41 pm

2 stops28h 41m

$555

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/4

Showing 1-10 of 59 resultsSorted by cheapest first
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Best time to book a flight from Ontario to Oakland

Have a flexible travel schedule? Discover the best time to fly to Oakland from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Oakland
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Oakland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Oakland from Ontario?

    Most people fly into Oakland (OAK) if they book a flight to Oakland from Ontario. Oakland is conveniently located just 7.0 mi from Oakland’s city center.

  • How long is the flight from Region of Ontario to Oakland, California?

    Delta and Alaska Airlines can get you from Region of Ontario to Oakland, California in just under 9h. Your travel time can differ by up to 05m. The distance from Region of Ontario to Oakland, California is about 2243 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Region of Ontario to Oakland, California?

    While some choose either Montreal Pierre Elliott Trudeau Intl - Oakland or Toronto Region of Waterloo Intl - Oakland, Toronto Pearson Intl - Oakland is the most popular route from Region of Ontario to Oakland, California.

  • Can I find deals for flights from Ontario to Oakland that include hotel bookings?

    Yes. In addition to deals on Ontario to Oakland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Oakland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Oakland.

  • Can I find deals for business class flights from Ontario to Oakland?

    Yes. Cheapflights offers flight deals from Ontario to Oakland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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