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 26m. Your travel time can differ by up to 11h 14m. The distance from Region of Ontario to Oakland, California is about 2243 mi. This flight may include one or multiple stops.

In terms of precipitation, rainfall in Oakland, California ranges from 0.0 - 4.8 inches per month. January is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Oakland, California when rainfall is around 0.0 in.

If weather is an important factor for your trip to Oakland, California, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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

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

How far in advance should I book a flight from Region of Ontario to Oakland, California?

Travelers have found it’s best to book a flight 44 days in advance to save up to 89% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 44 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Region of Ontario to Oakland, California 1-2 weeks in advance for as low as $437, or $728 for flights within the next 24 hours.

What is the cheapest month to fly from Region of Ontario to Oakland, California?

Flights from Region of Ontario to Oakland, California lean towards being more expensive in December. Prices are generally better when you fly from Region of Ontario to Oakland, California in April, with the cheapest ticket starting at $214.

What is the cheapest time of day to fly from ON to OAK?

When flying from Region of Ontario to Oakland, California, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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.

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.

$165+ Flights from Ontario to Oakland, CA

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Cheap flight deals from Ontario to Oakland

Round-trip from	$289 (Alaska Airlines)
One-way from	$165 (Kiwi.com)
Popular in	December
Cheapest in	April
Average price	$412

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 ($25 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 September 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 September 15, 2025.

Tue 10/284:45 pmYYZ - OAK

1 stop20h 40mAlaska Airlines

Tue 11/46:30 amOAK - YYZ

1 stop30h 05mAlaska Airlines

Deal found 9/12

$289

Tue 10/287:45 amYYZ - OAK

2 stops19h 14mMultiple Airlines

Tue 11/42:49 pmOAK - YYZ

1 stop21h 46mMultiple Airlines

Deal found 9/12

$341

Sat 11/14:45 pmYYZ - OAK

1 stop10h 14mAlaska Airlines

Tue 11/46:30 amOAK - YYZ

1 stop30h 05mAlaska Airlines

Deal found 9/13

$345

Wed 12/34:45 pmYYZ - OAK

1 stop10h 14mAlaska Airlines

Thu 12/46:40 amOAK - YYZ

1 stop29h 55mAlaska Airlines

Deal found 9/15

$363

Sat 11/16:15 amYYZ - OAK

2 stops12h 56mDelta

Mon 11/35:55 amOAK - YYZ

2 stops14h 23mDelta

Deal found 9/13

$364

Thu 10/164:45 pmYYZ - OAK

1 stop10h 18mAlaska Airlines

Mon 10/208:05 pmOAK - YYZ

1 stop15h 55mAlaska Airlines

Deal found 9/14

$380

Sat 11/14:45 pmYYZ - OAK

1 stop10h 14mAlaska Airlines

Mon 11/39:30 amOAK - YYZ

2 stops27h 05mAlaska Airlines

Deal found 9/13

$381

Wed 10/158:00 amYYZ - OAK

2 stops19h 03mMultiple Airlines

Wed 10/228:05 pmOAK - YYZ

1 stop15h 55mMultiple Airlines

Deal found 9/15

$387

Fri 12/54:45 pmYYZ - OAK

1 stop23h 52mAlaska Airlines

Mon 12/86:40 amOAK - YYZ

1 stop29h 55mAlaska Airlines

Deal found 9/15

$394

Wed 10/297:00 amYUL - OAK

2 stops12h 11mDelta

Wed 11/55:55 amOAK - YUL

2 stops14h 26mDelta

Deal found 9/14

$552

Sat 11/16:20 amYKF - OAK

2 stops20h 39mMultiple Airlines

Tue 11/42:49 pmOAK - YKF

2 stops35h 39mMultiple Airlines

Deal found 9/13

$565

Sat 11/16:20 amYKF - OAK

2 stops20h 39mMultiple Airlines

Mon 11/36:30 amOAK - YKF

2 stops19h 58mMultiple Airlines

Deal found 9/13

$575

Best flights from Ontario to Oakland
Discover carefully curated flight deals from Ontario to Oakland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2025.

Tue 10/284:45 pmYYZ - OAK

1 stop20h 40mAlaska Airlines

Tue 11/46:30 amOAK - YYZ

1 stop30h 05mAlaska Airlines

Deal found 9/12

$289

Tue 10/287:45 amYYZ - OAK

2 stops19h 14mMultiple Airlines

Tue 11/42:49 pmOAK - YYZ

1 stop21h 46mMultiple Airlines

Deal found 9/12

$341

Sat 11/19:45 amYYZ - OAK

2 stops9h 26mDelta

Tue 11/45:55 amOAK - YYZ

2 stops14h 23mDelta

Deal found 9/13

$364

Sat 11/14:45 pmYYZ - OAK

1 stop10h 14mAlaska Airlines

Tue 11/46:30 amOAK - YYZ

1 stop30h 05mAlaska Airlines

Deal found 9/13

$345

Fri 12/53:38 pmYYZ - OAK

2 stops11h 30mDelta

Mon 12/85:45 amOAK - YYZ

2 stops14h 42mDelta

Deal found 9/15

$380

Wed 12/34:45 pmYYZ - OAK

1 stop10h 14mAlaska Airlines

Thu 12/46:40 amOAK - YYZ

1 stop29h 55mAlaska Airlines

Deal found 9/15

$363

Fri 10/105:50 pmYYZ - OAK

1 stop9h 03mDelta

Mon 10/204:51 pmOAK - YYZ

2 stops15h 30mDelta

Deal found 9/14

$406

Thu 10/164:45 pmYYZ - OAK

1 stop10h 18mAlaska Airlines

Mon 10/208:05 pmOAK - YYZ

1 stop15h 55mAlaska Airlines

Deal found 9/13

$382

Sat 11/14:45 pmYYZ - OAK

1 stop21h 40mAlaska Airlines

Mon 11/36:30 amOAK - YYZ

1 stop30h 05mAlaska Airlines

Deal found 9/13

$384

Sat 11/16:20 amYKF - OAK

2 stops20h 39mMultiple Airlines

Tue 11/42:49 pmOAK - YKF

2 stops35h 39mMultiple Airlines

Deal found 9/13

$565

Fri 12/54:45 pmYYZ - OAK

1 stop20h 56mAlaska Airlines

Mon 12/87:59 pmOAK - YYZ

2 stops16h 36mAlaska Airlines

Deal found 9/15

$421

Sat 11/16:20 amYKF - OAK

2 stops20h 39mMultiple Airlines

Mon 11/36:30 amOAK - YKF

2 stops19h 58mMultiple Airlines

Deal found 9/13

$575

Last-minute flights from Ontario to Oakland
Discover last-minute flight deals from Ontario to Oakland. Data last updated September 15, 2025 and is based on user searches.

Mon 9/225:30 pmYUL - OAK

3 stops33h 02mMultiple Airlines

Sat 9/2710:56 amOAK - YUL

3 stops24h 54mMultiple Airlines

Deal found 9/12

$664

Fri 10/105:50 pmYYZ - OAK

1 stop9h 03mDelta

Mon 10/204:51 pmOAK - YYZ

2 stops15h 30mDelta

Deal found 9/14

$406

Sat 10/116:20 amYYZ - OAK

2 stops18h 12mDelta

Mon 10/204:51 pmOAK - YYZ

2 stops15h 30mDelta

Deal found 9/14

$449

Wed 10/158:00 amYYZ - OAK

2 stops19h 03mMultiple Airlines

Wed 10/228:05 pmOAK - YYZ

1 stop15h 55mMultiple Airlines

Deal found 9/15

$387

Wed 10/157:05 amYHM - OAK

2 stops15h 13mMultiple Airlines

Wed 10/226:40 amOAK - YHM

2 stops14h 19mMultiple Airlines

Deal found 9/15

$647

Thu 10/164:45 pmYYZ - OAK

1 stop10h 18mAlaska Airlines

Mon 10/208:05 pmOAK - YYZ

1 stop15h 55mAlaska Airlines

Deal found 9/14

$380

Thu 10/164:45 pmYYZ - OAK

1 stop10h 18mAlaska Airlines

Sun 10/196:40 amOAK - YYZ

1 stop29h 20mAlaska Airlines

Deal found 9/13

$454

Fri 10/174:45 pmYYZ - OAK

1 stop10h 18mAlaska Airlines

Mon 10/206:40 amOAK - YYZ

1 stop29h 20mAlaska Airlines

Deal found 9/14

$437

Tue 10/284:45 pmYYZ - OAK

1 stop20h 40mAlaska Airlines

Tue 11/46:30 amOAK - YYZ

1 stop30h 05mAlaska Airlines

Deal found 9/12

$289

Tue 10/287:45 amYYZ - OAK

2 stops19h 14mMultiple Airlines

Tue 11/42:49 pmOAK - YYZ

1 stop21h 46mMultiple Airlines

Deal found 9/12

$341

Tue 10/286:20 amYYZ - OAK

2 stops12h 51mDelta

Tue 11/45:55 amOAK - YYZ

2 stops14h 23mDelta

Deal found 9/12

$364

Wed 10/297:00 amYUL - OAK

2 stops12h 11mDelta

Wed 11/55:55 amOAK - YUL

2 stops14h 26mDelta

Deal found 9/14

$552

One-way flights from Ontario to Oakland
Search for one-way flight options from Ontario to Oakland. Find affordable one-way fares based on user searches. Data last updated September 15, 2025.

Tue 10/287:45 amYYZ - OAK

2 stops29h 40mMultiple Airlines

Deal found 9/13

$165

Tue 12/164:45 pmYYZ - OAK

1 stop10h 14mAlaska Airlines

Deal found 9/14

$185

Fri 10/105:50 pmYYZ - OAK

1 stop9h 03mDelta

Deal found 9/15

$210

Mon 3/94:45 pmYYZ - OAK

1 stop9h 53mAlaska Airlines

Deal found 9/14

$211

Thu 10/304:45 pmYYZ - OAK

1 stop10h 14mAlaska Airlines

Deal found 9/14

$214

Tue 3/107:45 amYYZ - OAK

2 stops19h 08mDelta

Deal found 9/14

$216

Thu 10/165:50 pmYYZ - OAK

1 stop9h 03mDelta

Deal found 9/15

$226

Thu 10/164:45 pmYYZ - OAK

1 stop10h 18mAlaska Airlines

Deal found 9/14

$228

Tue 10/147:45 amYYZ - OAK

2 stops19h 08mDelta

Deal found 9/14

$232

Thu 3/127:45 amYYZ - OAK

2 stops19h 08mDelta

Deal found 9/14

$258

Sat 11/16:00 amYUL - OAK

2 stops18h 32mDelta

Deal found 9/15

$316

Sun 11/25:00 amYUL - OAK

2 stops32h 50mDelta

Deal found 9/15

$394

Fly from

Fly to

Route

Depart

Return

Price

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Tue 10/28

4:45 pm-10:25 am

1 stop20h 40m

Oakland

Tue 11/4

6:30 am-3:35 pm

1 stop30h 05m

$289

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Tue 10/28

7:45 am-11:59 pm

2 stops19h 14m

Oakland

Tue 11/4

2:49 pm-3:35 pm

1 stop21h 46m

$341

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Sat 11/1

4:45 pm-11:59 pm

1 stop10h 14m

Oakland

Tue 11/4

6:30 am-3:35 pm

1 stop30h 05m

$345

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Wed 12/3

4:45 pm-11:59 pm

1 stop10h 14m

Oakland

Thu 12/4

6:40 am-3:35 pm

1 stop29h 55m

$363

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Sat 11/1

9:45 am-4:11 pm

2 stops9h 26m

Oakland

Tue 11/4

5:55 am-11:18 pm

2 stops14h 23m

$364

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Fri 12/5

3:38 pm-12:08 am

2 stops11h 30m

Oakland

Mon 12/8

5:45 am-11:27 pm

2 stops14h 42m

$380

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Thu 10/16

4:45 pm-12:03 am

1 stop10h 18m

Oakland

Mon 10/20

8:05 pm-3:00 pm

1 stop15h 55m

$382

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Sat 11/1

4:45 pm-11:25 am

1 stop21h 40m

Oakland

Mon 11/3

6:30 am-3:35 pm

1 stop30h 05m

$384

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Fri 10/10

5:50 pm-11:53 pm

1 stop9h 03m

Oakland

Mon 10/20

4:51 pm-11:21 am

2 stops15h 30m

$406

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Fri 12/5

4:45 pm-10:41 am

1 stop20h 56m

Oakland

Mon 12/8

7:59 pm-3:35 pm

2 stops16h 36m

$421

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 39 results

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.

Related info for your journey

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 26m. Your travel time can differ by up to 11h 14m. 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 Toronto Region of Waterloo Intl - Oakland or Montreal Pierre Elliott Trudeau Intl - 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.

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$165+ 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 10/28. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Oakland with Cheapflights

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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 September 15, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Oakland

Cheapest flights from Ontario to OaklandExplore 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 September 15, 2025.

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 September 15, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Oakland that are best for you.

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.

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?

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?

How long is the flight from Region of Ontario to Oakland, California?

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

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

How can I find direct flights from Ontario to Oakland?

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

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

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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 September 15, 2025.