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 20h 43m. Your travel time can differ by up to 1h 23m. 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 Ottawa - Oakland or Montreal Pierre Elliott Trudeau Intl - Oakland, Toronto Pearson Intl - Oakland is the most popular route from Region of Ontario to Oakland, California.

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.

$193+ Flights from Ontario to Oakland, CA

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Cheap 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 December 18, 2025.

Sat 12/206:10 amYYZ - OAK

2 stops18h 35mDelta

Wed 12/315:53 amOAK - YYZ

2 stops14h 27mDelta

Deal found 12/16

$789

Mon 12/226:05 amYYZ - OAK

2 stops12h 59mDelta

Wed 12/315:53 amOAK - YYZ

2 stops14h 27mDelta

Deal found 12/16

$793

Sun 12/216:05 amYYZ - OAK

2 stops12h 59mDelta

Wed 12/315:53 amOAK - YYZ

2 stops14h 27mDelta

Deal found 12/16

$800

Thu 12/256:10 amYYZ - OAK

2 stops19h 37mDelta

Wed 12/315:53 amOAK - YYZ

2 stops14h 27mDelta

Deal found 12/15

$844

Sun 12/214:45 pmYYZ - OAK

1 stop10h 14mAlaska Airlines

Tue 12/306:10 amOAK - YYZ

1 stop30h 25mAlaska Airlines

Deal found 12/16

$854

Sat 12/2012:09 pmYYZ - OAK

2 stops12h 36mDelta

Mon 12/295:53 amOAK - YYZ

2 stops14h 27mDelta

Deal found 12/16

$899

Fri 12/2612:09 pmYYZ - OAK

2 stops14h 49mDelta

Wed 12/315:53 amOAK - YYZ

2 stops14h 27mDelta

Deal found 12/16

$907

Mon 12/226:05 amYYZ - OAK

2 stops12h 59mDelta

Mon 12/295:53 amOAK - YYZ

2 stops14h 27mDelta

Deal found 12/16

$909

Mon 12/224:45 pmYYZ - OAK

1 stop10h 14mAlaska Airlines

Tue 12/306:10 amOAK - YYZ

1 stop30h 25mAlaska Airlines

Deal found 12/16

$915

Sun 12/216:05 amYYZ - OAK

2 stops12h 59mDelta

Mon 12/295:53 amOAK - YYZ

2 stops14h 27mDelta

Deal found 12/16

$917

Sun 12/2112:37 pmYUL - OAK

2 stops14h 21mDelta

Thu 12/255:53 amOAK - YUL

2 stops15h 06mDelta

Deal found 12/17

$1,156

Sat 12/276:45 pmYUL - OAK

1 stop29h 45mMultiple Airlines

Thu 1/13:01 pmOAK - YUL

2 stops22h 26mMultiple Airlines

Deal found 12/16

$1,186

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 December 18, 2025.

Tue 1/134:45 pmYYZ - OAK

1 stop20h 43mAlaska Airlines

Fri 1/235:17 pmOAK - YYZ

1 stop19h 18mAlaska Airlines

Deal found 12/16

$316

Mon 1/264:46 pmYUL - OAK

2 stops22h 06mDelta

Wed 1/2812:33 pmOAK - YUL

2 stops24h 23mDelta

Deal found 12/16

$446

Thu 1/156:20 amYKF - OAK

2 stops17h 20mMultiple Airlines

Thu 1/225:17 pmOAK - YKF

2 stops33h 11mMultiple Airlines

Deal found 12/18

$569

Tue 1/134:45 pmYYZ - OAK

1 stop20h 43mAlaska Airlines

Tue 1/208:10 amOAK - YYZ

1 stop28h 25mAlaska Airlines

Deal found 12/16

$316

Tue 1/134:45 pmYYZ - OAK

1 stop20h 43mAlaska Airlines

Sun 1/188:10 amOAK - YYZ

1 stop28h 25mAlaska Airlines

Deal found 12/16

$323

Tue 1/134:45 pmYYZ - OAK

1 stop20h 43mAlaska Airlines

Sat 1/178:10 amOAK - YYZ

1 stop28h 25mAlaska Airlines

Deal found 12/16

$323

Tue 1/134:45 pmYYZ - OAK

1 stop20h 43mAlaska Airlines

Wed 1/2110:30 amOAK - YYZ

2 stops26h 05mAlaska Airlines

Deal found 12/16

$333

Sat 1/177:00 amYUL - OAK

2 stops17h 38mDelta

Sat 1/245:55 amOAK - YUL

2 stops14h 17mDelta

Deal found 12/16

$459

Wed 1/144:45 pmYYZ - OAK

1 stop26h 38mAlaska Airlines

Thu 1/225:17 pmOAK - YYZ

1 stop19h 18mAlaska Airlines

Deal found 12/17

$338

Wed 1/144:45 pmYYZ - OAK

1 stop21h 18mAlaska Airlines

Wed 1/218:10 amOAK - YYZ

1 stop28h 25mAlaska Airlines

Deal found 12/15

$339

Thu 2/54:45 pmYYZ - OAK

2 stops20h 01mAlaska Airlines

Sun 2/156:15 amOAK - YYZ

1 stop30h 20mAlaska Airlines

Deal found 12/16

$354

Sat 1/176:45 pmYUL - OAK

1 stop20h 00mMultiple Airlines

Sat 1/2411:08 amOAK - YUL

2 stops26h 19mMultiple Airlines

Deal found 12/16

$719

Sat 1/311:02 pmYUL - OAK

2 stops25h 50mDelta

Mon 2/212:33 pmOAK - YUL

2 stops20h 12mDelta

Deal found 12/17

$711

Sat 1/313:00 pmYUL - OAK

3 stops30h 56mMultiple Airlines

Mon 2/211:17 pmOAK - YUL

2 stops22h 23mMultiple Airlines

Deal found 12/17

$873

Sun 1/46:10 pmYHM - OAK

2 stops28h 47mMultiple Airlines

Mon 1/511:17 pmOAK - YHM

2 stops22h 08mMultiple Airlines

Deal found 12/15

$1,587

Last-minute flights from Ontario to Oakland
Discover last-minute flight deals from Ontario to Oakland. Data last updated December 18, 2025 and is based on user searches.

Mon 1/127:45 amYYZ - OAK

2 stops15h 55mMultiple Airlines

Wed 1/218:10 amOAK - YYZ

1 stop28h 25mMultiple Airlines

Deal found 12/17

$357

Tue 1/134:45 pmYYZ - OAK

1 stop20h 43mAlaska Airlines

Tue 1/208:10 amOAK - YYZ

1 stop28h 25mAlaska Airlines

Deal found 12/16

$316

Tue 1/134:45 pmYYZ - OAK

1 stop20h 43mAlaska Airlines

Wed 1/218:10 amOAK - YYZ

1 stop28h 25mAlaska Airlines

Deal found 12/16

$323

Tue 1/134:45 pmYYZ - OAK

1 stop20h 43mAlaska Airlines

Mon 1/198:10 amOAK - YYZ

1 stop28h 25mAlaska Airlines

Deal found 12/16

$359

Tue 1/134:45 pmYYZ - OAK

2 stops20h 01mAlaska Airlines

Fri 1/235:17 pmOAK - YYZ

1 stop19h 18mAlaska Airlines

Deal found 12/16

$365

Wed 1/144:45 pmYYZ - OAK

1 stop21h 18mAlaska Airlines

Fri 1/238:10 amOAK - YYZ

1 stop28h 25mAlaska Airlines

Deal found 12/16

$333

Wed 1/144:45 pmYYZ - OAK

1 stop26h 38mAlaska Airlines

Thu 1/225:17 pmOAK - YYZ

1 stop19h 18mAlaska Airlines

Deal found 12/17

$338

Wed 1/144:45 pmYYZ - OAK

1 stop21h 18mAlaska Airlines

Wed 1/218:10 amOAK - YYZ

1 stop28h 25mAlaska Airlines

Deal found 12/15

$339

Thu 1/156:20 amYKF - OAK

2 stops17h 20mMultiple Airlines

Thu 1/225:17 pmOAK - YKF

2 stops33h 11mMultiple Airlines

Deal found 12/18

$569

Sat 1/177:00 amYUL - OAK

2 stops17h 38mDelta

Sat 1/245:55 amOAK - YUL

2 stops14h 17mDelta

Deal found 12/16

$459

Mon 1/264:46 pmYUL - OAK

2 stops22h 06mDelta

Wed 1/2812:33 pmOAK - YUL

2 stops24h 23mDelta

Deal found 12/16

$446

Sat 1/311:02 pmYUL - OAK

2 stops25h 50mDelta

Mon 2/212:33 pmOAK - YUL

2 stops20h 12mDelta

Deal found 12/17

$711

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 December 18, 2025.

Fri 1/304:45 pmYYZ - OAK

1 stop26h 43mAlaska Airlines

Deal found 12/16

$193

Tue 2/174:45 pmYYZ - OAK

1 stop19h 29mAlaska Airlines

Deal found 12/17

$207

Fri 1/3010:15 pmYYZ - OAK

3 stops21h 13mMultiple Airlines

Deal found 12/16

$218

Tue 6/25:50 pmYYZ - OAK

1 stop8h 59mDelta

Deal found 12/15

$221

Wed 4/224:45 pmYYZ - OAK

1 stop9h 54mAlaska Airlines

Deal found 12/15

$222

Sat 1/316:45 amYUL - OAK

3 stops55h 18mMultiple Airlines

Deal found 12/17

$233

Mon 1/124:45 pmYYZ - OAK

1 stop26h 38mAlaska Airlines

Deal found 12/16

$243

Wed 4/2212:15 pmYYZ - OAK

2 stops14h 34mDelta

Deal found 12/15

$246

Fri 1/308:15 amYHM - OAK

2 stops15h 25mMultiple Airlines

Deal found 12/15

$391

Tue 2/172:35 pmYHM - OAK

2 stops11h 14mMultiple Airlines

Deal found 12/17

$436

Tue 2/176:20 amYKF - OAK

2 stops16h 37mMultiple Airlines

Deal found 12/17

$646

Thu 12/252:40 pmYUL - OAK

2 stops11h 07mDelta

Deal found 12/16

$749

Find flight deals from Ontario to Oakland

Most accurate provider	Justfly.com 3 stars
Most trusted provider	Justfly.com 3 stars
Round-trip from	$316 (Alaska Airlines)
One-way from	$193 (Alaska Airlines)
Popular in	December
Cheapest in	April
Average price	$480

Provider with most accurate pricing for Toronto (YTO)-San Francisco flight deals.

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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 ($24 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Tue 1/13

4:45 pm-10:28 am

1 stop20h 43m

Oakland

Fri 1/23

5:17 pm-3:35 pm

1 stop19h 18m

$316

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Tue 1/13

4:45 pm-10:28 am

1 stop20h 43m

Oakland

Tue 1/20

8:10 am-3:35 pm

1 stop28h 25m

$316

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Tue 1/13

4:45 pm-10:28 am

1 stop20h 43m

Oakland

Sun 1/18

8:10 am-3:35 pm

1 stop28h 25m

$323

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Tue 1/13

4:45 pm-10:28 am

1 stop20h 43m

Oakland

Sat 1/17

8:10 am-3:35 pm

1 stop28h 25m

$323

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Tue 1/13

4:45 pm-10:28 am

1 stop20h 43m

Oakland

Wed 1/21

10:30 am-3:35 pm

2 stops26h 05m

$333

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Wed 1/14

4:45 pm-4:23 pm

1 stop26h 38m

Oakland

Thu 1/22

5:17 pm-3:35 pm

1 stop19h 18m

$338

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Wed 1/14

4:45 pm-11:03 am

1 stop21h 18m

Oakland

Wed 1/21

8:10 am-3:35 pm

1 stop28h 25m

$339

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Thu 2/5

4:45 pm-9:46 am

2 stops20h 01m

Oakland

Sun 2/15

6:15 am-3:35 pm

1 stop30h 20m

$354

MontrealOakland

YUL - OAK

YULOAK

Montreal Pierre Elliott Trudeau Intl

Mon 1/26

4:46 pm-11:52 am

2 stops22h 06m

Oakland

Wed 1/28

12:33 pm-3:56 pm

2 stops24h 23m

$446

MontrealOakland

YUL - OAK

YULOAK

Montreal Pierre Elliott Trudeau Intl

Sat 1/17

7:00 am-9:38 pm

2 stops17h 38m

Oakland

Sat 1/24

5:55 am-11:12 pm

2 stops14h 17m

$459

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 32 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 $144). Flying from Region of Ontario to Oakland, California in January is currently the most expensive (average of $242). 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 20h 43m. Your travel time can differ by up to 1h 23m. 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 Ottawa - 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 $144). Flying from Region of Ontario to Oakland, California in January is currently the most expensive (average of $242). 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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$193+ 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 1/30. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap 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 December 18, 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 December 18, 2025.

Find flight deals from Ontario to Oakland

Keep the following information in mind while searching for Ontario to Oakland flight deals. Data was last updated December 18, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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 December 18, 2025.