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Cheap flights from Oakland, CA to Ontario from C$ 192

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 13/8. Fares are subject to change and may not be available on all flights or dates of travel.
OAK — YYZ
3 Aug — 10 Aug1
1 adult

Cheap flight deals from Oakland to Ontario

Keep the following information in mind while searching for Oakland to Ontario flight deals. Data was last updated 29 July 2025.

Round-trip from

C$ 351

One-way from

C$ 192

Popular in

December

Cheapest in

April

Average price

C$ 650
10/9-17/9
  • 10/9-17/9
  • 3 total stops
  • 20h 44m total
  • Oakland to Ontario
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13/8
  • 13/8
  • 3 total stops
  • 17h 08m total
  • Oakland to Ontario
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 113 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 30 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Oakland to Ontario

Cheapest flights from Oakland to Ontario
Explore the most affordable flight options available from Oakland to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 July 2025.

Wed 10/98:33 a.m.OAK - YYZ
1 stop8h 12mMultiple Airlines
Wed 17/92:00 p.m.YYZ - OAK
2 stops12h 32mMultiple Airlines
Deal found 27/7C$ 351
Thu 7/85:27 p.m.OAK - YYZ
1 stop15h 23mSun Country Air
Thu 14/811:40 a.m.YYZ - OAK
1 stop7h 47mSun Country Air
Deal found 28/7C$ 491
Wed 10/96:00 a.m.OAK - YOW
3 stops21h 45mMultiple Airlines
Wed 17/97:50 a.m.YOW - OAK
3 stops26h 48mMultiple Airlines
Deal found 27/7C$ 553
Tue 7/109:25 a.m.OAK - YYZ
2 stops26h 35mAlaska Airlines
Tue 14/104:45 p.m.YYZ - OAK
2 stops29h 33mAlaska Airlines
Deal found 27/7C$ 561
Wed 17/98:33 a.m.OAK - YTZ
2 stops21h 57mMultiple Airlines
Mon 22/97:00 a.m.YTZ - OAK
3 stops27h 38mMultiple Airlines
Deal found 29/7C$ 579
Wed 17/96:00 a.m.OAK - YUL
2 stops15h 41mMultiple Airlines
Sat 20/96:45 a.m.YUL - OAK
2 stops19h 47mMultiple Airlines
Deal found 28/7C$ 615
Mon 25/84:58 p.m.OAK - YYZ
2 stops14h 25mDelta
Fri 5/95:43 p.m.YYZ - OAK
1 stop8h 03mDelta
Deal found 29/7C$ 628
Sat 6/96:00 a.m.OAK - YHM
2 stops15h 40mMultiple Airlines
Tue 9/96:00 a.m.YHM - OAK
2 stops28h 38mMultiple Airlines
Deal found 28/7C$ 632
Tue 16/912:37 p.m.OAK - YUL
2 stops32h 19mDelta
Sat 20/97:00 a.m.YUL - OAK
2 stops18h 48mDelta
Deal found 27/7C$ 722

Cheapflights Fare Finder

 
Customize your flight search to find flights from Oakland to Ontario 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 629,999 searches. Data last updated 29 July 2025.
Use the filters below to find and compare flights from Oakland to Ontario that are best for you.

Fly from

Oakland

Fly to

Ontario

Route

Depart

Return

Price

OaklandToronto

OAK - YYZ

OAKYYZ

Oakland

Wed 10/9

8:33 a.m.-7:45 p.m.

1 stop8h 12m

Toronto Pearson Intl

Wed 17/9

2:00 p.m.-11:32 p.m.

2 stops12h 32m

C$ 351

OaklandOttawa

OAK - YOW

OAKYOW

Oakland

Wed 10/9

6:00 a.m.-6:45 a.m.

3 stops21h 45m

Ottawa

Wed 17/9

7:50 a.m.-7:38 a.m.

3 stops26h 48m

C$ 553

OaklandToronto

OAK - YYZ

OAKYYZ

Oakland

Tue 7/10

9:25 a.m.-3:00 p.m.

2 stops26h 35m

Toronto Pearson Intl

Tue 14/10

4:45 p.m.-7:18 p.m.

2 stops29h 33m

C$ 561

OaklandMontreal

OAK - YUL

OAKYUL

Oakland

Wed 17/9

6:00 a.m.-12:41 a.m.

2 stops15h 41m

Montreal Pierre Elliott Trudeau Intl

Sat 20/9

6:45 a.m.-11:32 p.m.

2 stops19h 47m

C$ 615

OaklandToronto

OAK - YYZ

OAKYYZ

Oakland

Mon 25/8

4:58 p.m.-10:23 a.m.

2 stops14h 25m

Toronto Pearson Intl

Fri 5/9

5:43 p.m.-10:46 p.m.

1 stop8h 03m

C$ 628

OaklandHamilton

OAK - YHM

OAKYHM

Oakland

Sat 6/9

6:00 a.m.-12:40 a.m.

2 stops15h 40m

Hamilton

Tue 9/9

6:00 a.m.-7:38 a.m.

2 stops28h 38m

C$ 632

OaklandToronto

OAK - YTZ

OAKYTZ

Oakland

Thu 21/8

6:00 a.m.-10:35 a.m.

3 stops25h 35m

Toronto Island

Mon 25/8

2:00 p.m.-11:27 p.m.

2 stops12h 27m

C$ 680

OaklandMontreal

OAK - YUL

OAKYUL

Oakland

Tue 16/9

12:37 p.m.-11:56 p.m.

2 stops32h 19m

Montreal Pierre Elliott Trudeau Intl

Sat 20/9

7:00 a.m.-10:48 p.m.

2 stops18h 48m

C$ 722

OaklandToronto

OAK - YYZ

OAKYYZ

Oakland

Wed 13/8

10:44 a.m.-6:52 a.m.

3 stops17h 08m

C$ 192

OaklandToronto

OAK - YYZ

OAKYYZ

Oakland

Thu 7/8

5:27 p.m.-11:50 a.m.

1 stop15h 23m

C$ 199

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/7

Showing 1-10 of 15 results
1
2

Best time to book a flight from Oakland to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Oakland 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 Oakland to Ontario

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

Currently, January is the cheapest month in which you can book a flight from Oakland, California to Region of Ontario (average of C$ 167). Flying from Oakland, California to Region of Ontario in July is currently the most expensive (average of C$ 258). 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 Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated 29 July 2025.
Get a feel of what it's like to fly with Alaska Airlines,Delta, andSun Country Air from Oakland to Ontario by reading reviews from past customers. 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
Check prices

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Delta
8.0
Very good
7,977 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Sun Country Air
6.9
Okay
333 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Boarding

8.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

Related info for your journey

Find useful and relevant information for your journey from Oakland to Ontario. 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 from for flights from Oakland to Ontario?

    For a flight from Oakland to Ontario, you will be flying from Oakland. Oakland (OAK) is just 11.3 km from the centre of the city.

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

    The cheapest airlines for a one-way flight from Oakland, California to Region of Ontario are Sun Country Air (C$ 199), Alaska Airlines (C$ 254), and Delta (C$ 278).

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

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Oakland to Ontario 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 Oakland, California to Region of Ontario?

    Currently, January is the cheapest month in which you can book a flight from Oakland, California to Region of Ontario (average of C$ 167). Flying from Oakland, California to Region of Ontario in July is currently the most expensive (average of C$ 258). 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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Alternative routes for Oakland to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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