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Oakland

$183+ 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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — OAK
Aug 6 — Aug 131
Wed 8/6
Wed 8/13
1 adult, Economy
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Cheap flight deals from Ontario to Oakland

Keep the following information in mind while searching for Ontario to Oakland flight deals. Data was last updated August 1, 2025.

Round-trip from

$333
(Kiwi.com)

One-way from

$183
(Kiwi.com)

Popular in

December

Cheapest in

April

Average price

$439
From Ontario to Oakland
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One-way flight from Ontario to Oakland
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Highest demand for flights based on searches. 5% potential increase in price ($23 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find 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 August 1, 2025.

This Kiwi.com deal was found by Cheapflights users on 7/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/138:05 pmYYZ - OAK
1 stop14h 33mMultiple Airlines
Mon 10/208:33 amOAK - YYZ
1 stop8h 12mMultiple Airlines
Deal found 7/31$333
This Delta deal was found by Cheapflights users on 7/31. 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 8/215:43 pmYYZ - OAK
1 stop9h 07mDelta
Mon 8/254:58 pmOAK - YYZ
2 stops14h 25mDelta
Deal found 7/31$363
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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.
Thu 9/114:45 pmYYZ - OAK
1 stop10h 19mAlaska Airlines
Tue 10/711:03 amOAK - YYZ
1 stop24h 57mAlaska Airlines
Deal found 7/31$373
This Delta deal was found by Cheapflights users on 7/30. 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.
Sat 11/157:00 amYUL - OAK
2 stops18h 53mDelta
Wed 12/35:05 pmOAK - YUL
2 stops27h 29mDelta
Deal found 7/30$465
This Mytrip deal was found by Cheapflights users on 7/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/161:10 pmYUL - OAK
2 stops13h 17mMultiple Airlines
Fri 8/2212:30 pmOAK - YUL
2 stops16h 00mMultiple Airlines
Deal found 7/30$694

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 August 1, 2025.
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 10/13

8:05 pm-7:38 am

1 stop14h 33m

Oakland

Mon 10/20

8:33 am-7:45 pm

1 stop8h 12m

$333

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Thu 8/21

5:43 pm-11:50 pm

1 stop9h 07m

Oakland

Mon 8/25

4:58 pm-10:23 am

2 stops14h 25m

$363

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Thu 9/11

4:45 pm-12:04 am

1 stop10h 19m

Oakland

Tue 10/7

11:03 am-3:00 pm

1 stop24h 57m

$373

MontrealOakland

YUL - OAK

YULOAK

Montreal Pierre Elliott Trudeau Intl

Sat 11/15

7:00 am-10:53 pm

2 stops18h 53m

Oakland

Wed 12/3

5:05 pm-11:34 pm

2 stops27h 29m

$465

MontrealOakland

YUL - OAK

YULOAK

Montreal Pierre Elliott Trudeau Intl

Sat 8/16

1:10 pm-11:27 pm

2 stops13h 17m

Oakland

Fri 8/22

12:30 pm-7:30 am

2 stops16h 00m

$694

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Thu 9/25

10:40 am-11:32 pm

2 stops15h 52m

$183

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Wed 10/22

4:45 pm-12:03 am

1 stop10h 18m

$197

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Fri 9/12

5:43 pm-11:50 pm

1 stop9h 07m

$211

MontrealOakland

YUL - OAK

YULOAK

Montreal Pierre Elliott Trudeau Intl

Thu 8/28

6:45 am-11:27 pm

2 stops19h 42m

$213

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Thu 8/14

11:40 am-4:27 pm

1 stop7h 47m

$220

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 14 results
1
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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 $183). Flying from Region of Ontario to Oakland, California in November is currently the most expensive (average of $259). 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.

Reviews of airlines servicing Oakland

Get insights into the airlines that provide service to Oakland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Oakland. Reviews last updated August 1, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and Sun Country Air from Ontario to Oakland have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Comfort

7.8

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Comfort

7.8

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Comfort

7.8

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Sun Country Air
6.9
Okay
334 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Comfort

7.8

Food

7.1

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

  • What are the cheapest airlines to fly from Region of Ontario to Oakland, California one-way?

    The cheapest airlines for a one-way flight from Region of Ontario to Oakland, California are Alaska Airlines ($197), Delta ($211), and Sun Country Air ($220).

  • 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 $183). Flying from Region of Ontario to Oakland, California in November is currently the most expensive (average of $259). 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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