$271+ Cheap flights from Oakland, CA (OAK) to Ontario
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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
OAK — YYZ
Jul 29 — Aug 51
Round-trip
1 adult, Economy
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Find cheap flights from Oakland to Ontario with Cheapflights
1. Tell us where you want to go
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Cheapest flights from Oakland to OntarioExplore 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 June 29, 2026.
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 June 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:13 pm
OAK
- YYZ
1 stop15h 26m
Multiple Airlines
Tue 9/1510:50 am
YYZ
- OAK
2 stops27h 28m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$456
This Kiwi.com deal was found by Cheapflights users on 6/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:13 pm
OAK
- YYZ
1 stop15h 26m
Multiple Airlines
Thu 9/179:00 am
YYZ
- OAK
2 stops13h 44m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$471
This Kiwi.com deal was found by Cheapflights users on 6/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:13 pm
OAK
- YYZ
1 stop25h 56m
Multiple Airlines
Tue 9/1510:50 am
YYZ
- OAK
2 stops27h 28m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$488
This Kiwi.com deal was found by Cheapflights users on 6/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/912:13 pm
OAK
- YYZ
1 stop25h 56m
Multiple Airlines
Thu 9/179:00 am
YYZ
- OAK
2 stops13h 44m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$512
This Kiwi.com deal was found by Cheapflights users on 6/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1012:13 pm
OAK
- YYZ
1 stop15h 26m
Multiple Airlines
Wed 9/168:00 am
YYZ
- OAK
2 stops13h 12m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$524
This Kiwi.com deal was found by Cheapflights users on 6/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1112:13 pm
OAK
- YYZ
1 stop15h 26m
Multiple Airlines
Thu 9/179:00 am
YYZ
- OAK
2 stops13h 44m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$525
This Kiwi.com deal was found by Cheapflights users on 6/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/138:04 am
OAK
- YYZ
2 stops14h 01m
Multiple Airlines
Sat 9/264:55 pm
YYZ
- OAK
1 stop8h 59m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$572
This Kiwi.com deal was found by Cheapflights users on 6/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1112:13 pm
OAK
- YYZ
1 stop15h 26m
Multiple Airlines
Tue 9/158:00 am
YYZ
- OAK
2 stops16h 28m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$578
This Kiwi.com deal was found by Cheapflights users on 6/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/98:22 pm
OAK
- YYZ
1 stop21h 33m
Multiple Airlines
Wed 9/168:00 am
YYZ
- OAK
2 stops13h 12m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$586
This Kiwi.com deal was found by Cheapflights users on 6/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/127:52 am
OAK
- YYZ
2 stops14h 13m
Multiple Airlines
Sun 8/168:20 pm
YYZ
- OAK
1 stop28h 24m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$597
This CheapOair deal was found by Cheapflights users on 6/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:00 am
OAK
- YYZ
1 stop29h 45m
Alaska Airlines
Fri 10/164:55 pm
YYZ
- OAK
1 stop9h 00m
Alaska Airlines
Deal found 6/28![Alaska Airlines logo]()
$599
This Delta deal was found by Cheapflights users on 6/28. 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.
Fri 7/2412:30 pm
OAK
- YUL
2 stops32h 10m
Delta
Mon 8/37:00 am
YUL
- OAK
2 stops19h 56m
Delta
Deal found 6/28![Delta logo]()
$665
Best flights from Oakland to OntarioDiscover carefully curated flight deals from Oakland to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 29, 2026.
Discover carefully curated flight deals from Oakland to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 29, 2026.
This Delta deal was found by Cheapflights users on 6/24. 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.
Tue 7/286:00 am
OAK
- YYZ
2 stops14h 02m
Delta
Tue 8/117:45 am
YYZ
- OAK
2 stops19h 11m
Delta
Deal found 6/24![Delta logo]()
$654
This Alaska Airlines deal was found by Cheapflights users on 6/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1512:20 pm
OAK
- YYZ
1 stop24h 25m
Alaska Airlines
Fri 10/304:55 pm
YYZ
- OAK
1 stop9h 00m
Alaska Airlines
Deal found 6/26![Alaska Airlines logo]()
$701
This Kiwi.com deal was found by Cheapflights users on 6/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/267:51 pm
OAK
- YUL
2 stops32h 14m
Multiple Airlines
Mon 8/3111:01 am
YUL
- OAK
1 stop13h 43m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$801
This Delta deal was found by Cheapflights users on 6/26. 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 8/175:00 pm
OAK
- YYZ
2 stops14h 25m
Delta
Fri 8/212:24 pm
YYZ
- OAK
2 stops12h 32m
Delta
Deal found 6/26![Delta logo]()
$659
This Alaska Airlines deal was found by Cheapflights users on 6/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/296:01 am
OAK
- YYZ
2 stops14h 25m
Alaska Airlines
Wed 9/306:46 am
YYZ
- OAK
2 stops15h 09m
Alaska Airlines
Deal found 6/27![Alaska Airlines logo]()
$721
This Delta deal was found by Cheapflights users on 6/28. 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.
Fri 7/2412:30 pm
OAK
- YUL
2 stops32h 10m
Delta
Mon 8/37:00 am
YUL
- OAK
2 stops19h 56m
Delta
Deal found 6/28![Delta logo]()
$665
This Alaska Airlines deal was found by Cheapflights users on 6/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:51 pm
OAK
- YYZ
2 stops12h 08m
Alaska Airlines
Mon 9/286:46 am
YYZ
- OAK
2 stops15h 09m
Alaska Airlines
Deal found 6/26![Alaska Airlines logo]()
$721
This Kiwi.com deal was found by Cheapflights users on 6/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/3011:30 pm
OAK
- YUL
1 stop29h 00m
Multiple Airlines
Sat 9/55:00 pm
YUL
- OAK
2 stops21h 18m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$804
This Delta deal was found by Cheapflights users on 6/27. 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 8/166:00 am
OAK
- YYZ
1 stop7h 40m
Delta
Sun 8/237:30 am
YYZ
- OAK
2 stops19h 26m
Delta
Deal found 6/27![Delta logo]()
$676
This Kiwi.com deal was found by Cheapflights users on 6/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/258:04 am
OAK
- YUL
2 stops20h 01m
Multiple Airlines
Fri 8/2811:01 am
YUL
- OAK
1 stop13h 43m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$808
This Delta deal was found by Cheapflights users on 6/26. 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.
Tue 8/186:00 am
OAK
- YYZ
2 stops14h 10m
Delta
Sun 8/237:30 am
YYZ
- OAK
2 stops19h 26m
Delta
Deal found 6/26![Delta logo]()
$687
This Mytrip deal was found by Cheapflights users on 6/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1911:30 pm
OAK
- YUL
3 stops21h 50m
Multiple Airlines
Wed 9/237:05 am
YUL
- OAK
2 stops17h 39m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$836
This Delta deal was found by Cheapflights users on 6/24. 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 7/305:05 pm
OAK
- YYZ
2 stops15h 20m
Delta
Tue 8/115:50 pm
YYZ
- OAK
1 stop9h 06m
Delta
Deal found 6/24![Delta logo]()
$691
This Delta deal was found by Cheapflights users on 6/28. 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 8/86:00 am
OAK
- YYZ
1 stop7h 40m
Delta
Sat 8/295:50 pm
YYZ
- OAK
1 stop7h 48m
Delta
Deal found 6/28![Delta logo]()
$724
This Mytrip deal was found by Cheapflights users on 6/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/711:15 pm
OAK
- YOW
2 stops22h 35m
Multiple Airlines
Mon 8/106:35 pm
YOW
- OAK
3 stops29h 50m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$937
This Delta deal was found by Cheapflights users on 6/28. 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 7/266:00 am
OAK
- YUL
2 stops26h 56m
Delta
Thu 7/307:00 am
YUL
- OAK
2 stops36h 21m
Delta
Deal found 6/28![Delta logo]()
$735
This Mytrip deal was found by Cheapflights users on 6/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2911:15 pm
OAK
- YOW
3 stops29h 50m
Multiple Airlines
Mon 8/316:25 pm
YOW
- OAK
3 stops30h 19m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$950
This Delta deal was found by Cheapflights users on 6/28. 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 7/266:00 am
OAK
- YUL
2 stops26h 56m
Delta
Mon 8/37:00 am
YUL
- OAK
2 stops19h 56m
Delta
Deal found 6/28![Delta logo]()
$735
This Delta deal was found by Cheapflights users on 6/26. 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.
Tue 10/65:05 pm
OAK
- YUL
2 stops27h 46m
Delta
Sat 10/107:00 am
YUL
- OAK
2 stops19h 56m
Delta
Deal found 6/26![Delta logo]()
$736
This KAYAK deal was found by Cheapflights users on 6/25. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/227:00 am
OAK
- YOW
2 stops37h 45m
Multiple Airlines
Thu 11/266:00 am
YOW
- OAK
2 stops19h 10m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$1,055
This Delta deal was found by Cheapflights users on 6/28. 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 7/275:05 pm
OAK
- YYZ
2 stops12h 50m
Delta
Mon 8/36:14 pm
YYZ
- OAK
2 stops8h 42m
Delta
Deal found 6/28![Delta logo]()
$739
This KAYAK deal was found by Cheapflights users on 6/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/86:22 am
OAK
- YOW
2 stops20h 13m
Multiple Airlines
Sun 8/231:20 pm
YOW
- OAK
2 stops32h 35m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$1,060
This Delta deal was found by Cheapflights users on 6/28. 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 7/266:00 am
OAK
- YUL
2 stops26h 56m
Delta
Sat 8/17:00 am
YUL
- OAK
2 stops17h 38m
Delta
Deal found 6/28![Delta logo]()
$739
This Travelocity deal was found by Cheapflights users on 6/27. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/202:55 pm
OAK
- YOW
2 stops19h 03m
Multiple Airlines
Thu 7/308:35 am
YOW
- OAK
2 stops13h 58m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$1,090
This Delta deal was found by Cheapflights users on 6/25. 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.
Tue 7/286:00 am
OAK
- YYZ
2 stops14h 13m
Delta
Thu 8/66:10 am
YYZ
- OAK
2 stops13h 04m
Delta
Deal found 6/25![Delta logo]()
$745
This Gotogate deal was found by Cheapflights users on 6/25. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/12:11 pm
OAK
- YTZ
2 stops16h 29m
Multiple Airlines
Mon 9/710:05 am
YTZ
- OAK
2 stops16h 05m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$1,100
This Gotogate deal was found by Cheapflights users on 6/27. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/206:22 am
OAK
- YHM
2 stops31h 53m
Multiple Airlines
Thu 7/237:25 am
YHM
- OAK
2 stops15h 08m
Multiple Airlines
Deal found 6/27![Multiple Airlines logo]()
$1,118
This Delta deal was found by Cheapflights users on 6/29. 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 11/115:55 am
OAK
- YUL
2 stops14h 15m
Delta
Sun 11/157:00 am
YUL
- OAK
2 stops12h 32m
Delta
Deal found 6/29![Delta logo]()
$877
This KAYAK deal was found by Cheapflights users on 6/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/910:20 am
OAK
- YOW
2 stops16h 15m
Multiple Airlines
Sun 8/231:20 pm
YOW
- OAK
2 stops32h 35m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$1,140
This Delta deal was found by Cheapflights users on 6/28. 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 11/56:00 am
OAK
- YUL
2 stops14h 22m
Delta
Sun 11/157:00 am
YUL
- OAK
2 stops12h 32m
Delta
Deal found 6/28![Delta logo]()
$913
Last-minute flights from Oakland to OntarioDiscover last-minute flight deals from Oakland to Ontario. Data last updated June 29, 2026 and is based on user searches.
Discover last-minute flight deals from Oakland to Ontario. Data last updated June 29, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 6/28. 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.
Fri 7/2412:30 pm
OAK
- YUL
2 stops32h 10m
Delta
Mon 8/37:00 am
YUL
- OAK
2 stops19h 56m
Delta
Deal found 6/28![Delta logo]()
$665
This Delta deal was found by Cheapflights users on 6/28. 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.
Fri 7/2412:30 pm
OAK
- YUL
2 stops32h 10m
Delta
Sat 8/17:00 am
YUL
- OAK
2 stops17h 38m
Delta
Deal found 6/28![Delta logo]()
$669
This Kiwi.com deal was found by Cheapflights users on 6/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/248:22 pm
OAK
- YYZ
1 stop21h 33m
Multiple Airlines
Tue 7/2812:55 pm
YYZ
- OAK
2 stops24h 02m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$686
This Kiwi.com deal was found by Cheapflights users on 6/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/248:22 pm
OAK
- YYZ
1 stop21h 33m
Multiple Airlines
Wed 7/297:00 am
YYZ
- OAK
2 stops14h 33m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$724
This Delta deal was found by Cheapflights users on 6/28. 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 7/266:00 am
OAK
- YUL
2 stops26h 56m
Delta
Thu 7/307:00 am
YUL
- OAK
2 stops36h 21m
Delta
Deal found 6/28![Delta logo]()
$735
This Delta deal was found by Cheapflights users on 6/28. 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 7/266:00 am
OAK
- YUL
2 stops26h 56m
Delta
Sat 8/17:00 am
YUL
- OAK
2 stops17h 38m
Delta
Deal found 6/28![Delta logo]()
$739
This Delta deal was found by Cheapflights users on 6/25. 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 7/275:05 pm
OAK
- YYZ
2 stops15h 14m
Delta
Mon 8/32:24 pm
YYZ
- OAK
2 stops12h 32m
Delta
Deal found 6/25![Delta logo]()
$659
This Delta deal was found by Cheapflights users on 6/24. 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.
Tue 7/286:00 am
OAK
- YYZ
2 stops14h 13m
Delta
Tue 8/115:50 pm
YYZ
- OAK
1 stop9h 06m
Delta
Deal found 6/24![Delta logo]()
$619
This Delta deal was found by Cheapflights users on 6/24. 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.
Tue 7/286:00 am
OAK
- YYZ
2 stops14h 02m
Delta
Mon 8/107:45 am
YYZ
- OAK
2 stops19h 11m
Delta
Deal found 6/24![Delta logo]()
$697
This Delta deal was found by Cheapflights users on 6/24. 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 7/296:00 am
OAK
- YYZ
2 stops14h 02m
Delta
Tue 8/115:50 pm
YYZ
- OAK
1 stop9h 06m
Delta
Deal found 6/24![Delta logo]()
$648
This Delta deal was found by Cheapflights users on 6/25. 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 7/295:05 pm
OAK
- YYZ
2 stops15h 14m
Delta
Mon 8/107:45 am
YYZ
- OAK
2 stops19h 11m
Delta
Deal found 6/25![Delta logo]()
$726
This Delta deal was found by Cheapflights users on 6/25. 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 7/305:05 pm
OAK
- YYZ
2 stops15h 20m
Delta
Mon 8/107:45 am
YYZ
- OAK
2 stops19h 11m
Delta
Deal found 6/25![Delta logo]()
$691
One-way flights from Oakland to OntarioSearch for one-way flight options from Oakland to Ontario. Find affordable one-way fares based on user searches. Data last updated June 29, 2026.
Search for one-way flight options from Oakland to Ontario. Find affordable one-way fares based on user searches. Data last updated June 29, 2026.
This Delta deal was found by Cheapflights users on 6/28. 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.
Tue 7/216:00 am
OAK
- YYZ
1 stop7h 35m
Delta
Deal found 6/28![Delta logo]()
$271
This Delta deal was found by Cheapflights users on 6/25. 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 9/26:00 am
OAK
- YYZ
1 stop7h 40m
Delta
Deal found 6/25![Delta logo]()
$276
This Delta deal was found by Cheapflights users on 6/24. 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 8/106:00 am
OAK
- YYZ
2 stops14h 57m
Delta
Deal found 6/24![Delta logo]()
$281
This CheapOair deal was found by Cheapflights users on 6/24. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/78:00 am
OAK
- YYZ
2 stops28h 45m
Alaska Airlines
Deal found 6/24![Alaska Airlines logo]()
$282
This Delta deal was found by Cheapflights users on 6/24. 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.
Tue 7/286:00 am
OAK
- YYZ
2 stops14h 02m
Delta
Deal found 6/24![Delta logo]()
$287
This Kiwi.com deal was found by Cheapflights users on 6/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/115:35 pm
OAK
- YOW
2 stops33h 00m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$293
This Kiwi.com deal was found by Cheapflights users on 6/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/911:30 pm
OAK
- YYZ
3 stops29h 39m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$294
This Kiwi.com deal was found by Cheapflights users on 6/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2811:15 pm
OAK
- YYZ
1 stop18h 40m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$298
This Delta deal was found by Cheapflights users on 6/24. 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 7/295:05 pm
OAK
- YYZ
2 stops15h 14m
Delta
Deal found 6/24![Delta logo]()
$310
This Delta deal was found by Cheapflights users on 6/24. 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 9/306:00 am
OAK
- YYZ
1 stop7h 44m
Delta
Deal found 6/24![Delta logo]()
$311
This Kiwi.com deal was found by Cheapflights users on 6/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/252:50 pm
OAK
- YYZ
2 stops12h 49m
Multiple Airlines
Deal found 6/24![Multiple Airlines logo]()
$319
This Alaska Airlines deal was found by Cheapflights users on 6/24. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:51 pm
OAK
- YYZ
1 stop16h 54m
Alaska Airlines
Deal found 6/24![Alaska Airlines logo]()
$320
Find flight deals from Oakland to Ontario
Keep the following information in mind while searching for Oakland to Ontario flight deals. Data was last updated June 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $456 (Kiwi.com) |
One-way from | $271 (Delta) |
Popular in | December |
Cheapest in | January |
Average price | $566 |
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 2,558,603 searches. Data last updated June 29, 2026.
Use the filters below to find and compare flights from Oakland to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OaklandToronto
OAK - YYZ
OAKYYZ
Oakland
Tue 7/28
6:00 am-11:02 pm
2 stops14h 02m
Toronto Pearson Intl
Tue 8/11
7:45 am-11:56 pm
2 stops19h 11m
$654
OaklandToronto
OAK - YYZ
OAKYYZ
Oakland
Mon 8/17
5:00 pm-10:25 am
2 stops14h 25m
Toronto Pearson Intl
Fri 8/21
2:24 pm-11:56 pm
2 stops12h 32m
$659
OaklandMontreal
OAK - YUL
OAKYUL
Oakland
Fri 7/24
12:30 pm-11:40 pm
2 stops32h 10m
Montreal Pierre Elliott Trudeau Intl
Mon 8/3
7:00 am-11:56 pm
2 stops19h 56m
$665
OaklandToronto
OAK - YYZ
OAKYYZ
Oakland
Sun 8/16
6:00 am-4:40 pm
1 stop7h 40m
Toronto Pearson Intl
Sun 8/23
7:30 am-11:56 pm
2 stops19h 26m
$676
OaklandToronto
OAK - YYZ
OAKYYZ
Oakland
Tue 8/18
6:00 am-11:10 pm
2 stops14h 10m
Toronto Pearson Intl
Sun 8/23
7:30 am-11:56 pm
2 stops19h 26m
$687
OaklandToronto
OAK - YYZ
OAKYYZ
Oakland
Thu 7/30
5:05 pm-11:25 am
2 stops15h 20m
Toronto Pearson Intl
Tue 8/11
5:50 pm-11:56 pm
1 stop9h 06m
$691
OaklandToronto
OAK - YYZ
OAKYYZ
Oakland
Thu 10/15
12:20 pm-3:45 pm
1 stop24h 25m
Toronto Pearson Intl
Fri 10/30
4:55 pm-10:55 pm
1 stop9h 00m
$701
OaklandToronto
OAK - YYZ
OAKYYZ
Oakland
Tue 9/29
6:01 am-11:26 pm
2 stops14h 25m
Toronto Pearson Intl
Wed 9/30
6:46 am-6:55 pm
2 stops15h 09m
$721
OaklandToronto
OAK - YYZ
OAKYYZ
Oakland
Fri 9/25
7:51 pm-10:59 am
2 stops12h 08m
Toronto Pearson Intl
Mon 9/28
6:46 am-6:55 pm
2 stops15h 09m
$721
Quickest round-trip
OaklandToronto
OAK - YYZ
OAKYYZ
Oakland
Sat 8/8
6:00 am-4:40 pm
1 stop7h 40m
Toronto Pearson Intl
Sat 8/29
5:50 pm-10:38 pm
1 stop7h 48m
$724
Showing 1-10 of 60 resultsSorted by cheapest first
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.
OAK-YYZ
OAK-YOW
OAK-YTZ
OAK-YUL
OAK-YHM
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
OAK-CAON
OAK-YYZ
OAK-YOW
OAK-YTZ
OAK-YUL
No data available for this route at this time. Please check back soon.
Related info for your journey
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