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Oakland

$254+ 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 8/7. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — OAK
Jun 14 — Jun 211
Sun 6/14
Sun 6/21
1 adult, Economy
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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 May 15, 2026.

This Delta deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/107:45 am
YYZ
-
OAK
2 stops19h 06m
Delta
Wed 8/196:00 am
OAK
-
YYZ
2 stops14h 57m
Delta
Deal found 5/12$449
This Delta deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/305:50 pm
YYZ
-
OAK
1 stop8h 59m
Delta
Sat 10/35:55 am
OAK
-
YYZ
1 stop7h 50m
Delta
Deal found 5/12$450
This Delta deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/125:45 pm
YYZ
-
OAK
1 stop9h 06m
Delta
Tue 8/186:00 am
OAK
-
YYZ
2 stops14h 14m
Delta
Deal found 5/12$476
This Delta deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/306:10 am
YYZ
-
OAK
2 stops13h 15m
Delta
Tue 6/95:03 pm
OAK
-
YYZ
2 stops15h 16m
Delta
Deal found 5/11$487
This Delta deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/217:45 am
YYZ
-
OAK
2 stops19h 09m
Delta
Tue 6/306:00 am
OAK
-
YYZ
2 stops14h 14m
Delta
Deal found 5/11$499
This Delta deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/245:45 pm
YYZ
-
OAK
1 stop9h 09m
Delta
Fri 7/35:03 pm
OAK
-
YYZ
2 stops15h 16m
Delta
Deal found 5/11$503
This Delta deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/3112:09 pm
YYZ
-
OAK
2 stops14h 48m
Delta
Tue 6/95:03 pm
OAK
-
YYZ
2 stops15h 16m
Delta
Deal found 5/11$514
This Justfly.com deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:00 am
YYZ
-
OAK
2 stops12h 55m
Multiple Airlines
Sat 8/222:09 pm
OAK
-
YYZ
2 stops13h 46m
Multiple Airlines
Deal found 5/12$523
This Delta deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:45 am
YYZ
-
OAK
2 stops19h 04m
Delta
Mon 9/285:05 pm
OAK
-
YYZ
2 stops16h 10m
Delta
Deal found 5/11$526
This Delta deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/45:45 pm
YYZ
-
OAK
1 stop9h 12m
Delta
Wed 6/105:03 pm
OAK
-
YYZ
2 stops15h 16m
Delta
Deal found 5/10$530
This Delta deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/217:45 am
YYZ
-
OAK
2 stops19h 09m
Delta
Mon 6/296:00 am
OAK
-
YYZ
1 stop7h 35m
Delta
Deal found 5/11$549
This Delta deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:00 am
YUL
-
OAK
2 stops36h 14m
Delta
Wed 8/2612:33 pm
OAK
-
YUL
2 stops32h 26m
Delta
Deal found 5/10$578

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 May 15, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$449
(Delta)

One-way from

$254
(Delta)

Popular in

December

Cheapest in

November

Average price

$431
Provider with most accurate pricing for Toronto (YTO)-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Toronto (YTO)-San Francisco flights.
Search Deals
From Ontario to Oakland
Search Deals
One-way flight from Ontario to Oakland
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Oakland 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 2,558,603 searches. Data last updated May 15, 2026.
Use the filters below to find and compare flights from Ontario to Oakland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Thu 6/4

5:45 pm-11:57 pm

1 stop9h 12m

Oakland

Tue 6/9

5:03 pm-11:19 am

2 stops15h 16m

$449

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Sat 5/30

6:10 am-4:25 pm

2 stops13h 15m

Oakland

Tue 6/9

5:03 pm-11:19 am

2 stops15h 16m

$487

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Tue 6/9

5:45 pm-11:54 pm

1 stop9h 09m

Oakland

Sat 6/13

6:00 am-11:14 pm

2 stops14h 14m

$499

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Thu 6/25

7:45 am-11:54 pm

2 stops19h 09m

Oakland

Tue 6/30

6:00 am-11:14 pm

2 stops14h 14m

$499

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Thu 9/24

5:50 pm-11:49 pm

1 stop8h 59m

Oakland

Mon 9/28

5:05 pm-12:15 pm

2 stops16h 10m

$526

TorontoOakland

YYZ - OAK

YYZOAK

Toronto Pearson Intl

Tue 6/23

4:10 pm-11:54 pm

2 stops10h 44m

Oakland

Wed 7/1

5:03 pm-11:19 am

2 stops15h 16m

$576

MontrealOakland

YUL - OAK

YULOAK

Montreal Pierre Elliott Trudeau Intl

Tue 8/18

7:00 am-11:51 pm

2 stops19h 51m

Oakland

Wed 8/26

12:33 pm-11:59 pm

2 stops32h 26m

$578

MontrealOakland

YUL - OAK

YULOAK

Montreal Pierre Elliott Trudeau Intl

Sat 8/22

7:00 am-10:04 pm

2 stops18h 04m

Oakland

Wed 8/26

12:33 pm-11:59 pm

2 stops32h 26m

$589

MontrealOakland

YUL - OAK

YULOAK

Montreal Pierre Elliott Trudeau Intl

Thu 8/20

7:00 am-11:51 pm

2 stops19h 51m

Oakland

Tue 8/25

4:57 pm-11:35 pm

2 stops27h 38m

$589

MontrealOakland

YUL - OAK

YULOAK

Montreal Pierre Elliott Trudeau Intl

Wed 8/19

7:00 am-11:51 pm

2 stops19h 51m

Oakland

Fri 8/28

4:57 pm-11:59 pm

2 stops28h 02m

$591

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/11

Showing 1-10 of 60 resultsSorted by cheapest first
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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
No data available for this route at this time. Please check back soon.

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?

    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?

    Delta can get you from Region of Ontario to Oakland, California in just under 9h 12m. Your travel time can differ by up to . The distance from Region of Ontario to Oakland, California is about 2243 mi.

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

    While some choose either Hamilton - Oakland or Toronto Region of Waterloo 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.

See more FAQs

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