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Cheap flights from Oakland, CA to Ontario from C$ 177

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 24/6. Fares are subject to change and may not be available on all flights or dates of travel.
OAK — YYZ
2 Apr — 9 Apr1
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 28 March 2025.

Round-trip from

C$ 347

One-way from

C$ 177

Popular in

December

Cheapest in

February

Average price

C$ 579
6/5-9/5
  • 6/5-9/5
  • 3 total stops
  • 35h 44m total
  • Oakland to Ontario
Search Deals
24/6
  • 24/6
  • 3 total stops
  • 20h 22m total
  • Oakland to Ontario
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 61 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 28 March 2025.

Tue 6/56:40 p.m.OAK - YYZ
1 stop22h 19mMultiple Airlines
Fri 9/512:00 p.m.YYZ - OAK
2 stops13h 25mMultiple Airlines
Deal found 26/3C$ 347
Sat 3/57:46 a.m.OAK - YHM
2 stops13h 55mMultiple Airlines
Tue 6/56:00 a.m.YHM - OAK
2 stops16h 33mMultiple Airlines
Deal found 27/3C$ 413
Tue 22/46:40 p.m.OAK - YOW
1 stop19h 05mMultiple Airlines
Sun 27/46:10 p.m.YOW - OAK
1 stop15h 39mMultiple Airlines
Deal found 26/3C$ 419
Mon 5/56:29 p.m.OAK - YUL
3 stops27h 14mMultiple Airlines
Mon 9/67:00 a.m.YUL - OAK
3 stops30h 56mMultiple Airlines
Deal found 27/3C$ 519
Thu 17/46:00 a.m.OAK - YYZ
1 stop7h 38mDelta
Fri 25/45:50 p.m.YYZ - OAK
1 stop8h 53mDelta
Deal found 26/3C$ 639
Fri 24/107:50 p.m.OAK - YYZ
1 stop16h 10mAlaska Airlines
Tue 28/104:45 p.m.YYZ - OAK
2 stops18h 58mAlaska Airlines
Deal found 27/3C$ 653
Fri 23/55:30 a.m.OAK - YTZ
3 stops33h 47mMultiple Airlines
Tue 27/53:35 p.m.YTZ - OAK
3 stops33h 50mMultiple Airlines
Deal found 26/3C$ 683
Tue 3/612:39 p.m.OAK - YUL
2 stops31h 40mDelta
Tue 24/66:10 a.m.YUL - OAK
2 stops20h 42mDelta
Deal found 27/3C$ 836

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 28 March 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

Tue 6/5

6:40 p.m.-7:59 p.m.

1 stop22h 19m

Toronto Pearson Intl

Fri 9/5

12:00 p.m.-10:25 p.m.

2 stops13h 25m

C$ 347

OaklandHamilton

OAK - YHM

OAKYHM

Oakland

Sat 3/5

7:46 a.m.-12:41 a.m.

2 stops13h 55m

Hamilton

Tue 6/5

6:00 a.m.-7:33 p.m.

2 stops16h 33m

C$ 413

OaklandOttawa

OAK - YOW

OAKYOW

Oakland

Tue 22/4

6:40 p.m.-4:45 p.m.

1 stop19h 05m

Ottawa

Sun 27/4

6:10 p.m.-6:49 a.m.

1 stop15h 39m

C$ 419

OaklandMontreal

OAK - YUL

OAKYUL

Oakland

Mon 5/5

6:29 p.m.-12:43 a.m.

3 stops27h 14m

Montreal Pierre Elliott Trudeau Intl

Mon 9/6

7:00 a.m.-10:56 a.m.

3 stops30h 56m

C$ 519

OaklandToronto

OAK - YYZ

OAKYYZ

Oakland

Thu 17/4

6:00 a.m.-4:38 p.m.

1 stop7h 38m

Toronto Pearson Intl

Fri 25/4

5:50 p.m.-11:43 p.m.

1 stop8h 53m

C$ 639

OaklandToronto

OAK - YTZ

OAKYTZ

Oakland

Fri 23/5

5:30 a.m.-6:17 p.m.

3 stops33h 47m

Toronto Island

Tue 27/5

3:35 p.m.-10:25 p.m.

3 stops33h 50m

C$ 683

OaklandToronto

OAK - YYZ

OAKYYZ

Oakland

Sat 10/5

4:43 p.m.-3:00 p.m.

1 stop19h 17m

Toronto Pearson Intl

Sat 17/5

4:45 p.m.-11:46 p.m.

1 stop10h 01m

C$ 685

OaklandMontreal

OAK - YUL

OAKYUL

Oakland

Tue 3/6

12:39 p.m.-11:19 p.m.

2 stops31h 40m

Montreal Pierre Elliott Trudeau Intl

Tue 24/6

6:10 a.m.-11:52 p.m.

2 stops20h 42m

C$ 836

OaklandToronto

OAK - YYZ

OAKYYZ

Oakland

Tue 24/6

7:30 a.m.-6:52 a.m.

3 stops20h 22m

C$ 177

OaklandToronto

OAK - YTZ

OAKYTZ

Oakland

Sun 6/4

6:55 p.m.-6:53 p.m.

2 stops20h 58m

C$ 283

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/3

Showing 1-10 of 14 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.

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 28 March 2025.
Alaska Airlines
8.0
Very good
9,798 reviews
Check prices

Entertainment

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,798 reviews
Alaska Airlines
8.0
Very good
9,798 reviews
Check prices

Entertainment

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,896 reviews
Alaska Airlines
8.0
Very good
9,798 reviews
Check prices

Entertainment

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,336 reviews
Alaska Airlines
8.0
Very good
9,798 reviews
Check prices

Entertainment

7.1

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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$ 336), Delta (C$ 382), and Hawaiian Airlines (C$ 680).

  • 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 - Toronto Island, 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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