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Oakland

$207+ 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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — OAK
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
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 January 29, 2026.

This Alaska Airlines deal was found by Cheapflights users on 1/27. 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.
Mon 3/24:45 pm
YYZ
-
OAK
1 stop9h 04m
Alaska Airlines
Tue 3/36:15 am
OAK
-
YYZ
1 stop30h 20m
Alaska Airlines
Deal found 1/27$347
This CheapOair deal was found by Cheapflights users on 1/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/234:45 pm
YYZ
-
OAK
1 stop9h 07m
Alaska Airlines
Fri 2/276:15 am
OAK
-
YYZ
1 stop30h 20m
Alaska Airlines
Deal found 1/28$368
This Alaska Airlines deal was found by Cheapflights users on 1/27. 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.
Fri 2/204:45 pm
YYZ
-
OAK
1 stop9h 04m
Alaska Airlines
Mon 3/25:31 pm
OAK
-
YYZ
1 stop19h 04m
Alaska Airlines
Deal found 1/27$375
This CheapOair deal was found by Cheapflights users on 1/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/204:45 pm
YYZ
-
OAK
1 stop9h 04m
Alaska Airlines
Sat 2/285:31 pm
OAK
-
YYZ
1 stop19h 04m
Alaska Airlines
Deal found 1/28$384
This CheapOair deal was found by Cheapflights users on 1/27. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/54:55 pm
YYZ
-
OAK
1 stop9h 59m
Alaska Airlines
Thu 12/35:00 pm
OAK
-
YYZ
1 stop19h 39m
Alaska Airlines
Deal found 1/27$414
This Delta deal was found by Cheapflights users on 1/26. 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 4/157:00 am
YUL
-
OAK
2 stops19h 54m
Delta
Sat 4/1812:34 pm
OAK
-
YUL
2 stops20h 04m
Delta
Deal found 1/26$452
This Delta deal was found by Cheapflights users on 1/27. 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.
Fri 3/2012:50 pm
YUL
-
OAK
2 stops13h 56m
Delta
Tue 3/245:55 am
OAK
-
YUL
2 stops14h 45m
Delta
Deal found 1/27$600
This Delta deal was found by Cheapflights users on 1/28. 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 7/166:00 am
YUL
-
OAK
2 stops20h 49m
Delta
Thu 7/301:15 pm
OAK
-
YUL
2 stops31h 41m
Delta
Deal found 1/28$617
This Delta deal was found by Cheapflights users on 1/28. 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.
Fri 7/177:00 am
YUL
-
OAK
2 stops19h 49m
Delta
Thu 7/301:15 pm
OAK
-
YUL
2 stops31h 41m
Delta
Deal found 1/28$643
This Delta deal was found by Cheapflights users on 1/28. 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 7/167:00 am
YUL
-
OAK
2 stops19h 49m
Delta
Mon 8/31:15 pm
OAK
-
YUL
2 stops31h 41m
Delta
Deal found 1/28$657
This Delta deal was found by Cheapflights users on 1/28. 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 7/166:00 am
YUL
-
OAK
2 stops20h 49m
Delta
Sat 8/11:15 pm
OAK
-
YUL
2 stops20h 01m
Delta
Deal found 1/28$673
This Delta deal was found by Cheapflights users on 1/28. 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.
Fri 7/177:00 am
YUL
-
OAK
2 stops19h 49m
Delta
Mon 8/31:15 pm
OAK
-
YUL
2 stops31h 41m
Delta
Deal found 1/28$682

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$347
(Alaska Airlines)

One-way from

$207
(CheapOair)

Popular in

December

Cheapest in

March

Average price

$373
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. 6% potential increase in price ($27 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 January 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 January 29, 2026.
Use the filters below to find and compare flights from Ontario to Oakland that are best for you.

Fly from

Ontario

Fly to

Oakland

Route

Depart

Return

Price

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Mon 3/2

4:45 pm-10:49 pm

1 stop9h 04m

Oakland

Tue 3/3

5:31 pm-3:35 pm

1 stop19h 04m

$350

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Fri 2/20

4:45 pm-10:49 pm

1 stop9h 04m

Oakland

Sat 2/28

5:31 pm-3:35 pm

1 stop19h 04m

$384

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Mon 2/23

4:45 pm-9:24 am

2 stops19h 39m

Oakland

Fri 2/27

6:15 am-3:35 pm

1 stop30h 20m

$407

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Fri 6/5

4:55 pm-8:50 am

2 stops18h 55m

Oakland

Thu 12/3

8:00 am-3:39 pm

2 stops28h 39m

$429

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Fri 2/20

4:45 pm-10:49 pm

1 stop9h 04m

Oakland

Mon 3/2

10:04 am-3:35 pm

2 stops26h 31m

$441

MontrealOakland

YUL - OAK

YULOAK

Montreal Pierre Elliott Trudeau Intl

Wed 4/15

7:00 am-11:54 pm

2 stops19h 54m

Oakland

Sat 4/18

12:34 pm-11:38 am

2 stops20h 04m

$452

MontrealOakland

YUL - OAK

YULOAK

Montreal Pierre Elliott Trudeau Intl

Tue 2/24

2:40 pm-11:55 am

2 stops24h 15m

Oakland

Tue 3/10

12:35 pm-11:40 pm

2 stops32h 05m

$452

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Mon 3/16

4:45 pm-4:37 pm

1 stop26h 52m

Oakland

Sun 3/22

7:00 am-3:35 pm

1 stop29h 35m

$506

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Tue 2/17

4:45 pm-9:24 am

2 stops19h 39m

Oakland

Sat 2/21

6:15 am-3:35 pm

1 stop30h 20m

$506

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Fri 2/13

4:45 pm-9:24 am

2 stops19h 39m

Oakland

Mon 2/23

6:15 am-3:35 pm

1 stop30h 20m

$522

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 44 results
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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

What is the cheapest month to book a flight from Region of Ontario to Oakland, California?

Currently, April is the cheapest month in which you can book a flight from Region of Ontario to Oakland, California (average of $144). Flying from Region of Ontario to Oakland, California in December is currently the most expensive (average of $253). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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?

    Alaska Airlines and Delta can get you from Region of Ontario to Oakland, California in just under 9h 04m. Your travel time can differ by up to 10h 50m. 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 Hamilton - 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.

  • What is the cheapest month to book a flight from Region of Ontario to Oakland, California?

    Currently, April is the cheapest month in which you can book a flight from Region of Ontario to Oakland, California (average of $144). Flying from Region of Ontario to Oakland, California in December is currently the most expensive (average of $253). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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