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Cheap flights from Oakland, CA to Ontario from C$ 185

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 16/7. Fares are subject to change and may not be available on all flights or dates of travel.
OAK — YYZ
17 jun. — 24 jun.1
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 12 junio 2025.

Round-trip from

C$ 418

One-way from

C$ 185

Popular in

December

Cheapest in

February

Average price

C$ 582
10/7-15/7
  • 10/7-15/7
  • 3 total stops
  • 32h 57m total
  • Oakland to Ontario
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16/7
  • 16/7
  • 1 total stop
  • 17h 57m total
  • Oakland to Ontario
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 106 potential increase over avg. RT price).
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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 June 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 12 junio 2025.

jue. 10/76:00 a.m.OAK - YYZ
1 stop10h 59mMultiple Airlines
mar. 15/71:30 p.m.YYZ - OAK
2 stops21h 58mMultiple Airlines
Deal found 12/6C$ 418
dom. 10/86:00 a.m.OAK - YHM
3 stops15h 41mMultiple Airlines
lun. 18/86:00 a.m.YHM - OAK
3 stops30h 11mMultiple Airlines
Deal found 11/6C$ 506
mar. 8/75:30 a.m.OAK - YUL
2 stops24h 32mMultiple Airlines
mar. 15/73:10 p.m.YUL - OAK
2 stops20h 18mMultiple Airlines
Deal found 10/6C$ 507
jue. 7/85:27 p.m.OAK - YYZ
1 stop15h 23mSun Country Air
dom. 10/87:45 a.m.YYZ - OAK
1 stop11h 54mSun Country Air
Deal found 10/6C$ 550
vie. 8/86:00 a.m.OAK - YOW
3 stops15h 41mMultiple Airlines
lun. 11/86:00 a.m.YOW - OAK
3 stops29h 28mMultiple Airlines
Deal found 12/6C$ 572
mar. 7/106:40 a.m.OAK - YYZ
1 stop29h 20mAlaska Airlines
mar. 14/104:45 p.m.YYZ - OAK
2 stops19h 00mAlaska Airlines
Deal found 11/6C$ 577
mié. 23/76:00 a.m.OAK - YYZ
1 stop7h 40mDelta
mar. 29/77:45 a.m.YYZ - OAK
2 stops19h 10mDelta
Deal found 10/6C$ 626
sáb. 19/76:00 a.m.OAK - YTZ
2 stops27h 20mMultiple Airlines
mar. 22/72:00 p.m.YTZ - OAK
2 stops21h 28mMultiple Airlines
Deal found 10/6C$ 711
mar. 22/712:30 p.m.OAK - YUL
2 stops20h 27mDelta
mar. 29/76:20 a.m.YUL - OAK
2 stops20h 35mDelta
Deal found 10/6C$ 745

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 12 junio 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

jue. 10/7

6:00 a.m.-7:59 p.m.

1 stop10h 59m

Toronto Pearson Intl

mar. 15/7

1:30 p.m.-8:28 a.m.

2 stops21h 58m

C$ 418

OaklandHamilton

OAK - YHM

OAKYHM

Oakland

dom. 10/8

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

3 stops15h 41m

Hamilton

lun. 18/8

6:00 a.m.-9:11 a.m.

3 stops30h 11m

C$ 506

OaklandMontreal

OAK - YUL

OAKYUL

Oakland

mar. 8/7

5:30 a.m.-9:02 a.m.

2 stops24h 32m

Montreal Pierre Elliott Trudeau Intl

mar. 15/7

3:10 p.m.-8:28 a.m.

2 stops20h 18m

C$ 507

OaklandToronto

OAK - YYZ

OAKYYZ

Oakland

jue. 7/8

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

1 stop15h 23m

Toronto Pearson Intl

dom. 10/8

7:45 a.m.-4:39 p.m.

1 stop11h 54m

C$ 550

OaklandOttawa

OAK - YOW

OAKYOW

Oakland

vie. 8/8

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

3 stops15h 41m

Ottawa

lun. 11/8

6:00 a.m.-8:28 a.m.

3 stops29h 28m

C$ 572

OaklandToronto

OAK - YYZ

OAKYYZ

Oakland

mar. 7/10

6:40 a.m.-3:00 p.m.

1 stop29h 20m

Toronto Pearson Intl

mar. 14/10

4:45 p.m.-8:45 a.m.

2 stops19h 00m

C$ 577

OaklandToronto

OAK - YTZ

OAKYTZ

Oakland

lun. 7/7

9:38 p.m.-8:02 p.m.

2 stops19h 24m

Toronto Island

mié. 9/7

8:30 a.m.-11:33 p.m.

2 stops18h 03m

C$ 610

OaklandToronto

OAK - YYZ

OAKYYZ

Oakland

mié. 23/7

6:00 a.m.-4:40 p.m.

1 stop7h 40m

Toronto Pearson Intl

mar. 29/7

7:45 a.m.-11:55 p.m.

2 stops19h 10m

C$ 626

OaklandMontreal

OAK - YUL

OAKYUL

Oakland

mar. 22/7

12:30 p.m.-11:57 a.m.

2 stops20h 27m

Montreal Pierre Elliott Trudeau Intl

mar. 29/7

6:20 a.m.-11:55 p.m.

2 stops20h 35m

C$ 745

OaklandToronto

OAK - YYZ

OAKYYZ

Oakland

mié. 16/7

9:23 a.m.-6:20 a.m.

1 stop17h 57m

C$ 185

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/6

Showing 1-10 of 18 results
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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$ 255). 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.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Region of Ontario ranges from 51.0 - 83.0 mm per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Region of Ontario when rainfall is around 51.0 mm.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Region of Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

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 12 junio 2025.
See what other customers who have flown with Alaska Airlines, Delta and Sun Country Air from Oakland to Ontario have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

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

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

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
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

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
345 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.1

Crew

8.5

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 Alaska Airlines (C$ 261), Delta (C$ 268), and Sun Country Air (C$ 354).

  • 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$ 255). 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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